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• How to "apt-get -f install" without deleting software?

  - by Jeggy

  I know Guitar pro doesn't support 64 bit, but i did get it to work with this command jeggy@jeggy-XPS:~$ sudo dpkg --force-architecture -i GuitarPro6-rev9063.deb [sudo] password for jeggy: Selecting previously unselected package guitarpro6:i386. (Reading database ... 285729 files and directories currently installed.) Unpacking guitarpro6:i386 (from GuitarPro6-rev9063.deb) ... dpkg: dependency problems prevent configuration of guitarpro6:i386: guitarpro6:i386 depends on gksu. dpkg: error processing guitarpro6:i386 (--install): dependency problems - leaving unconfigured Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Errors were encountered while processing: guitarpro6:i386 And even after i get that error the program perfectly works fine and updating and adding PPA's to the system works great, but when I'm trying to install some other software i get this error: jeggy@jeggy-XPS:~$ sudo apt-get install elinks Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: elinks : Depends: libfsplib0 (>= 0.9) but it is not going to be installed Depends: liblua50 (>= 5.0.3) but it is not going to be installed Depends: liblualib50 (>= 5.0.3) but it is not going to be installed Depends: libtre5 but it is not going to be installed Depends: elinks-data (= 0.12~pre5-7ubuntu1) but it is not going to be installed guitarpro6:i386 : Depends: gksu:i386 but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). And whenever i write "apt-get -f install" i get this jeggy@jeggy-XPS:~$ sudo apt-get -f install [sudo] password for jeggy: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: dconf-gsettings-backend:i386 python-levenshtein python-indicate libav-tools libstartup-notification0:i386 libxmuu1:i386 libavfilter-extra-2 libbabl-0.0-0 libgegl-0.0-0 libgconf2-4:i386 python-vobject libgtk-3-0:i386 libpam-cap:i386 python-utidylib libdconf0:i386 python-iniparse python-xmpp libpam-gnome-keyring:i386 libxcb-util0:i386 python-farstream Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: guitarpro6:i386 0 upgraded, 0 newly installed, 1 to remove and 7 not upgraded. 1 not fully installed or removed. After this operation, 84,0 MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 286979 files and directories currently installed.) Removing guitarpro6:i386 ... dpkg: warning: while removing guitarpro6:i386, directory '/opt/GuitarPro6/updater' not empty so not removed. dpkg: warning: while removing guitarpro6:i386, directory '/opt/GuitarPro6/Data/Soundbanks' not empty so not removed. Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... And now Guitar Pro is deleted. How can i install Guitar Pro and still be able to install other software afterwards?

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• How to make whoopsie more silent (log clutter with "online"messages)

  - by Rmano

  I know what whoopsie is from the answers to What is the 'whoopsie' process and how can I remove it? I do not want to stop error reporting, as I think that error reporting is the minimum a user should do to try to help Ubuntu. But since the upgrade to 13.10, whoopsie has grown up quite chatty. I have literally hundreds of messages like that in my logs: SYS: Nov 4 14:40:48 samsung-romano whoopsie[1156]: online SYS: Nov 4 14:41:56 whoopsie[1156]: last message repeated 4 times SYS: Nov 4 14:42:56 whoopsie[1156]: last message repeated 2 times SYS: Nov 4 14:43:56 whoopsie[1156]: last message repeated 2 times SYS: Nov 4 14:44:56 whoopsie[1156]: last message repeated 2 times % zgrep whoopsie /var/log/syslog*gz | wc -l 773 Is there a way to tell whoopsie to be less verbose? (the funny output format is from SLogger, a homemade program to check system log files I wrote ages ago, but this is basically the content of /var/log/syslog file).

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• In-app paymnt methods

  - by user212228

  I'm interested in developing for Ubuntu (mostly phones) and I can't seem to find the guidelines on app publishing, will apps only work through the ubuntu software center, or can users download and install an app from a website like is possible with an android apk? Also, are there any rules regarding in-app purchase methods, (I hope the minimum price here isn't $2.99 in-app as well or I'm not going to even bother developing for Ubuntu and will just stick with Android) Google for example, requires that in-app purchases go through their servers so that it isn't possible to use other funding methods at least for play store published apps. My main questions here are: Would it be possible to release an app for ubuntu touch that accepted bitcoin, paypal, or other methods for in-app purchases? If not, would it be possible to release apps through a personal website or 3rd party app market that could use alternative payment methods?

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• Migrating from a wordpress.com to wordpress.org blog without harming SEO

  - by kikio

  I've had a Wordpress.com weblog for 3 years. And its pages have a good pagerank and are shown in first search results pages. Because of the limitations, I should migrate to my own WordPress. How to migrate safely with the minimum SEO problems? (I know how to export content in wordpress.com and import it to a new wordpress.org blog.) Note 1: links structure and site design are different on the new wordpress blog. (I don't like wordpress.com links structure :| ) Note 2: as you know, it's not possible to edit .htaccess file on wordpress.com. so I can't use 301 redirects.

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• 3DS Max exporting too many vertexes for model

  - by Juan Pablo

  I have a sample model of a cube and a buddha downloaded from internet in 3ds format which I can load correctly into my program and view them without problem, but wanted to try and create my own model. I created a simple box mesh in 3ds max, and exported it as .3ds (Converted to mesh - export as .3ds) When inspecting the .3ds file with a hex viewer, I was expecting to see 8 vertexes and 12 faces declared (as the model I downloaded from internet). But what i found was that it listed 26 vertexes, and 12 faces! And when I try to load that file with my .3ds viewer, my parser isn't detecting the face block (0x4120), which is strange because it worked for other objects downloaded from internet. Do I have to set any special property in order to export a 3ds file with minimum vertexes and a vertex-index list?

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• PASS Summit 2011 &ndash; Part III

  - by Tara Kizer

  Well we’re about a month past PASS Summit 2011, and yet I haven’t finished blogging my notes! Between work and home life, I haven’t been able to come up for air in a bit.  Now on to my notes… On Thursday of the PASS Summit 2011, I attended Klaus Aschenbrenner’s (blog|twitter) “Advanced SQL Server 2008 Troubleshooting”, Joe Webb’s (blog|twitter) “SQL Server Locking & Blocking Made Simple”, Kalen Delaney’s (blog|twitter) “What Happened? Exploring the Plan Cache”, and Paul Randal’s (blog|twitter) “More DBA Mythbusters”.  I think my head grew two times in size from the Thursday sessions.  Just WOW! I took a ton of notes in Klaus' session.  He took a deep dive into how to troubleshoot performance problems.  Here is how he goes about solving a performance problem: Start by checking the wait stats DMV System health Memory issues I/O issues I normally start with blocking and then hit the wait stats.  Here’s the wait stat query (Paul Randal’s) that I use when working on a performance problem.  He highlighted a few waits to be aware of such as WRITELOG (indicates IO subsystem problem), SOS_SCHEDULER_YIELD (indicates CPU problem), and PAGEIOLATCH_XX (indicates an IO subsystem problem or a buffer pool problem).  Regarding memory issues, Klaus recommended that as a bare minimum, one should set the “max server memory (MB)” in sp_configure to 2GB or 10% reserved for the OS (whichever comes first).  This is just a starting point though! Regarding I/O issues, Klaus talked about disk partition alignment, which can improve SQL I/O performance by up to 100%.  You should use 64kb for NTFS cluster, and it’s automatic in Windows 2008 R2. Joe’s locking and blocking presentation was a good session to really clear up the fog in my mind about locking.  One takeaway that I had no idea could be done was that you can set a timeout in T-SQL code view LOCK_TIMEOUT.  If you do this via the application, you should trap error 1222. Kalen’s session went into execution plans.  The minimum size of a plan is 24k.  This adds up fast especially if you have a lot of plans that don’t get reused much.  You can use sys.dm_exec_cached_plans to check how often a plan is being reused by checking the usecounts column.  She said that we can use DBCC FLUSHPROCINDB to clear out the stored procedure cache for a specific database.  I didn’t know we had this available, so this was great to hear.  This will be less intrusive when an emergency comes up where I’ve needed to run DBCC FREEPROCCACHE. Kalen said one should enable “optimize for ad hoc workloads” if you have an adhoc loc.  This stores only a 300-byte stub of the first plan, and if it gets run again, it’ll store the whole thing.  This helps with plan cache bloat.  I have a lot of systems that use prepared statements, and Kalen says we simulate those calls by using sp_executesql.  Cool! Paul did a series of posts last year to debunk various myths and misconceptions around SQL Server.  He continues to debunk things via “DBA Mythbusters”.  You can get a PDF of a bunch of these here.  One of the myths he went over is the number of tempdb data files that you should have.  Back in 2000, the recommendation was to have as many tempdb data files as there are CPU cores on your server.  This no longer holds true due to the numerous cores we have on our servers.  Paul says you should start out with 1/4 to 1/2 the number of cores and work your way up from there.  BUT!  Paul likes what Bob Ward (twitter) says on this topic: 8 or less cores –> set number of files equal to the number of cores Greater than 8 cores –> start with 8 files and increase in blocks of 4 One common myth out there is to set your MAXDOP to 1 for an OLTP workload with high CXPACKET waits.  Instead of that, dig deeper first.  Look for missing indexes, out-of-date statistics, increase the “cost threshold for parallelism” setting, and perhaps set MAXDOP at the query level.  Paul stressed that you should not plan a backup strategy but instead plan a restore strategy.  What are your recoverability requirements?  Once you know that, now plan out your backups. As Paul always does, he talked about DBCC CHECKDB.  He said how fabulous it is.  I didn’t want to interrupt the presentation, so after his session had ended, I asked Paul about the need to run DBCC CHECKDB on your mirror systems.  You could have data corruption occur at the mirror and not at the principal server.  If you aren’t checking for data corruption on your mirror systems, you could be failing over to a corrupt database in the case of a disaster or even a planned failover.  You can’t run DBCC CHECKDB against the mirrored database, but you can run it against a snapshot off the mirrored database.

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• Intel graphics Ubuntu 12.04.3 LTS: does not detect second monitor

  - by user206551

  I have some problems to get the second monitor working on my Ubuntu 12.04.3 LTS. If I click on the detect button it does not work. Info about my system: $uname -a Linux LabTop2 3.8.0-32-generic #47~precise1-Ubuntu SMP Wed Oct 2 16:22:28 UTC 2013 i686 i686 i386 GNU/Linux $cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.3 LTS" NAME="Ubuntu" VERSION="12.04.3 LTS, Precise Pangolin" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu precise (12.04.3 LTS)" VERSION_ID="12.04" $lspci |grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) $lsmod | grep video uvcvideo 72250 0 videobuf2_core 39385 1 uvcvideo videodev 96131 2 uvcvideo,videobuf2_core videobuf2_vmalloc 12920 1 uvcvideo videobuf2_memops 13042 1 videobuf2_vmalloc video 19116 1 i915 $xrandr -q xrandr: Failed to get size of gamma for output default Screen 0: minimum 1366 x 768, current 1368 x 768, maximum 1368 x 768 default connected 1368x768+0+0 0mm x 0mm 1366x768 0.0 1368x768 0.0* Before upgrading the system, xrand -q showed my much more resolution options and the other monitor. I have tried to install intel-linux-graphics-installer but this version of ubuntu is not supported Any help will be apreciated!!

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• What algorithm can I use to detect simple shapes in a 4x4 matrix?

  - by ion

  I'm working on a simple multiplayer game that receives a random 4x4 matrix from a server and extracts a shape from it. For example: XXOO OXOO XXOX XXOO XOOX and XOOO XXXX OXXX So in the first matrix the shape I want to parse is: oo o oo and the 2nd: oo oo ooo I know there must be an algorithm for this because I saw this kind of behavior on some puzzle games but I have no idea how to go about to detecting them or even where to start. So my question is: How do I detect what shape is in the matrix and how do I differentiate between multiple colors? (it doesn't come only in X and O, it comes in a maximum of 4). Additionally, the shape must be a minimum of 4 blocks.

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• Minimal Ubuntu remastering

  - by kapitanluffy

  So i was trying to remaster a ubuntu mini remix using the tool called 'customizer'. my goal is to create a version with a gui capable of networking too. i don't like all the tomboy notes, evolution and unity stuff that natty has came with. http://www.ubuntu-mini-remix.org/ http://u-customizer.sourceforge.net/ the packages i installed are just xorg and gnome-desktop-environment apt-get --no-install-recommends xorg gnome-desktop-environment well it worked quite well. i just want to ask if there are any minimum packages other that the two mentioned above? the lubuntu-desktop is great too. but i want gnome more coz it has a wider community (imo) oh and please don't refer me to LFS .im still too noob for that xD

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• Why does flush dns often fail to work?

  - by Sharen Eayrs

  C:\Windows\system32>ipconfig /flushdns Windows IP Configuration Successfully flushed the DNS Resolver Cache. C:\Windows\system32>ping beautyadmired.com Pinging beautyadmired.com [xxx.45.62.2] with 32 bytes of data: Reply from xxx.45.62.2: bytes=32 time=253ms TTL=49 Reply from xxx.45.62.2: bytes=32 time=249ms TTL=49 Reply from xxx.45.62.2: bytes=32 time=242ms TTL=49 Reply from xxx.45.62.2: bytes=32 time=258ms TTL=49 Ping statistics for xxx.45.62.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 242ms, Maximum = 258ms, Average = 250ms My site should point to xx.73.42.27 I change the name server. It's been 3 hours. It still points to xxx.45.62.2 Actually what happen after we change name server anyway? Wait for what? I already flush dns. Why it still points to the wrong IP? Also most other people that do not have the DNS cache also still go to the wrong IP

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• What should be a fair amount of time in an interview before rejecting a candidate?

  - by Danish

  As a panelist for technical interviews, you often come across candidates who have all the requried educational qualifications, skill sets and experience level on resumes, but struggle to answer even the most basic questions. Ideally, technical interviews should try to check different aspects of a candidate and test them on various skills. So, if the candidate falters on one aspect, one should test the other ones before coming to a conclusion. But often, if a candidates falters on the first few questions, the red flag rises up pretty quickly. What in your opinion should be the bare minimum time spent with a candidate before making a fair accessment of his/her skills and suitability for the job?

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• Ubuntu 12.04 LTS initramfs-tools dependency issue

  - by Mike

  I know this has been asked several times, but each issue and resolution seems different. I've tried almost everything I could think of, but I can't fix this. I have a VM (VMware I think) running 12.04.03 LTS which has stuck dependencies. The VM is on a rented host, running a live system so I don't want to break it (further). uname -a Linux support 3.5.0-36-generic #57~precise1-Ubuntu SMP Thu Jun 20 18:21:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Some more: sudo apt-get update [sudo] password for tracker: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run ‘apt-get -f install’ to correct these. The following packages have unmet dependencies. initramfs-tools : Depends: initramfs-tools-bin (< 0.99ubuntu13.1.1~) but 0.99ubuntu13.3 is installed E: Unmet dependencies. Try using -f. sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: initramfs-tools The following packages will be upgraded: initramfs-tools 1 upgraded, 0 newly installed, 0 to remove and 2 not upgraded. 2 not fully installed or removed. Need to get 0 B/50.3 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? Y dpkg: dependency problems prevent configuration of initramfs-tools: initramfs-tools depends on initramfs-tools-bin (<< 0.99ubuntu13.1.1~); however: Version of initramfs-tools-bin on system is 0.99ubuntu13.3. dpkg: error processing initramfs-tools (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates it's a follow-up error from a previous failure. dpkg: dependency problems prevent configuration of apparmor: apparmor depends on initramfs-tools; however: Package initramfs-tools is not configured yet. dpkg: error processing apparmor (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates it's a follow-up error from a previous failure. Errors were encountered while processing: initramfs-tools apparmor E: Sub-process /usr/bin/dpkg returned an error code (1) If I look at the policy behind initramfs-tools / bin I get: apt-cache policy initramfs-tools initramfs-tools: Installed: 0.99ubuntu13.1 Candidate: 0.99ubuntu13.3 Version table: 0.99ubuntu13.3 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages *** 0.99ubuntu13.1 0 100 /var/lib/dpkg/status 0.99ubuntu13 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages apt-cache policy initramfs-tools-bin initramfs-tools-bin: Installed: 0.99ubuntu13.3 Candidate: 0.99ubuntu13.3 Version table: *** 0.99ubuntu13.3 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages 100 /var/lib/dpkg/status 0.99ubuntu13 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages So the issue seems to be I have 0.99ubuntu13.3 for initramfs-tools-bin yet 0.99ubuntu13.1 for initramfs-tools, and can't upgrade to 0.99ubuntu13.3. I've performed apt-get clean/autoclean/install -f/upgrade -f many times but they won't resolve. I can think of only 2 other 'solutions': Edit the dpkg dependency list to trick it into doing the installation with a broken dependency. This seems very dodgy and it would be a last resort Downgrade both initramfs-tools and initramfs-tools-bin to 0.99ubuntu13 from the precise/main sources and hope that would get them in step. However I'm not sure if this will be possible, or whether it would introduce more issues. I'm not sure how this situation arise in the first place. /boot was 96% full; it's now 56% full (it's tiny - 64MB ... this is what I got from the hosting company). Can anyone offer advice please?

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• How to mount a hidden NTFS WinRE which are on an external HDD

  - by annabinna

  A friend have given me her external hard drive which contains a backup of his Windows data. The disk has two NTFS partitions, once of them tagged as WinRe. When I do fdisk -lu I get Disk /dev/sdc: 120.0 GB, 120034123776 bytes 255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x59725972 Dispositiu Arrenc. Inici Final Blocs Id Sistema /dev/sdc1 2048 3074047 1536000 27 Hidden NTFS WinRE /dev/sdc2 * 3074048 234438655 115682304 7 HPFS/NTFS/exFAT I never fought against this type of partitions and I haven't any idea of how to mount this and recover the data. Can someone help me?

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• How to list missing partitions?

  - by celebrimbor

  I have installed Ubuntu on one of my partition and Crunchbang on the other partition. As I wanted to make some continuous space, I moved Crunchbang partition and then checked fdisk output which looks like this Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc7996dfa Device Boot Start End Blocks Id System /dev/sda1 * 63 80324 40131 de Dell Utility /dev/sda4 81918 625139711 312528897 f W95 Ext'd (LBA) /dev/sda5 81920 211816447 105867264 83 Linux /dev/sda6 299100160 341043199 20971520 83 Linux /dev/sda7 341045248 625139711 142047232 7 HPFS/NTFS/exFAT I cannot see sda2 and sda3 partition. How to find them?

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• Swap partition not recognized (The disk drive with UUID=... is not ready yet or not present)

  - by ladaghini

  I think I had an encrypted swap partition, because I chose to encrypt my home directory during the installation. I believe that's what the line with /dev/mapper/cryptswap1 ... in my /etc/fstab is all about. I did something to bork my swap because on the next boot, I got a message (paraphrased): The disk drive for /dev/mapper/cryptswap1 is not ready yet or not present. Wait to continue. Press S to skip or M to manually recover. (As a side note, pressing S or M seemed to do nothing different from just waiting.) Here's what I've tried: This tutorial on how to fix the swap partition not mounting. However, in the above, the mkswap command fails because the device is busy. So I booted from a live USB, ran GParted to reformat the swap partition (which showed up as an unknown fs type), and chrooted into the broken system to try that tutorial again. I also adjusted /etc/initramfs-tools/conf.d/resume and /etc/fstab to reflect the new UUID generated from formatting the partition as a swap. That still didn't work; instead of /dev/mapper/cryptswap1 not present, "The disk drive with UUID=[swap partition's UUID] is not ready yet or not present..." So I decided to start afresh as though I never had created a swap partition in the first place. From the Live USB, I deleted the swap partition altogether (which, again showed up in GParted as an unknown fs type), removed the swap and cryptswap entries in /etc/fstab as well as removed /etc/initramfs-tools/conf.d/resume and /etc/crypttab. At this point the main system shouldn't be considered broken because there is no swap partition and no instructions to mount one, right? I didn't get any errors during startup. I followed the same instructions to create and encrypt the swap partition, starting with creating a partition for the swap, though I think fdisk said a reboot was necessary to see changes. I was confident the 3rd process above would work, but the problem yet persists. Some relevant info (/dev/sda8 is the swap partition): /etc/fstab file: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda6 during installation UUID=4c11e82c-5fe9-49d5-92d9-cdaa6865c991 / ext4 errors=remount-ro 0 1 # /boot was on /dev/sda5 during installation UUID=4031413e-e89f-49a9-b54c-e887286bb15e /boot ext4 defaults 0 2 # /home was on /dev/sda7 during installation UUID=d5bbfc6f-482a-464e-9f26-fd213230ae84 /home ext4 defaults 0 2 # swap was on /dev/sda8 during installation UUID=5da2c720-8787-4332-9317-7d96cf1e9b80 none swap sw 0 0 /dev/mapper/cryptswap1 none swap sw 0 0 output of sudo mount: /dev/sda6 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) /dev/sda5 on /boot type ext4 (rw) /dev/sda7 on /home type ext4 (rw) /home/undisclosed/.Private on /home/undisclosed type ecryptfs (ecryptfs_check_dev_ruid,ecryptfs_cipher=aes,ecryptfs_key_bytes=16,ecryptfs_unlink_sigs,ecryptfs_sig=cbae1771abd34009,ecryptfs_fnek_sig=7cefe2f59aab8e58) gvfs-fuse-daemon on /home/undisclosed/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=undisclosed) output of sudo blkid (note that /dev/sda8 is missing): /dev/sda1: LABEL="SYSTEM" UUID="960490E80490CC9D" TYPE="ntfs" /dev/sda2: UUID="D4043140043126C0" TYPE="ntfs" /dev/sda3: LABEL="Shared" UUID="80F613E1F613D5EE" TYPE="ntfs" /dev/sda5: UUID="4031413e-e89f-49a9-b54c-e887286bb15e" TYPE="ext4" /dev/sda6: UUID="4c11e82c-5fe9-49d5-92d9-cdaa6865c991" TYPE="ext4" /dev/sda7: UUID="d5bbfc6f-482a-464e-9f26-fd213230ae84" TYPE="ext4" /dev/mapper/cryptswap1: UUID="41fa147a-3e2c-4e61-b29b-3f240fffbba0" TYPE="swap" output of sudo fdisk -l: Disk /dev/mapper/cryptswap1 doesn't contain a valid partition table Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xdec3fed2 Device Boot Start End Blocks Id System /dev/sda1 * 2048 409599 203776 7 HPFS/NTFS/exFAT /dev/sda2 409600 210135039 104862720 7 HPFS/NTFS/exFAT /dev/sda3 210135040 415422463 102643712 7 HPFS/NTFS/exFAT /dev/sda4 415424510 625141759 104858625 5 Extended /dev/sda5 415424512 415922175 248832 83 Linux /dev/sda6 415924224 515921919 49998848 83 Linux /dev/sda7 515923968 621389823 52732928 83 Linux /dev/sda8 621391872 625141759 1874944 82 Linux swap / Solaris Disk /dev/mapper/cryptswap1: 1919 MB, 1919942656 bytes 255 heads, 63 sectors/track, 233 cylinders, total 3749888 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xaf5321b5 /etc/initramfs-tools/conf.d/resume file: RESUME=UUID=5da2c720-8787-4332-9317-7d96cf1e9b80 /etc/crypttab file: cryptswap1 /dev/sda8 /dev/urandom swap,cipher=aes-cbc-essiv:sha256 output of sudo swapon -as: Filename Type Size Used Priority /dev/mapper/cryptswap1 partition 1874940 0 -1 output of sudo free -m: total used free shared buffers cached Mem: 1476 1296 179 0 35 671 -/+ buffers/cache: 590 886 Swap: 1830 0 1830 So, how can this be fixed?

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• How to improve performance of ubuntu server 10.04 for my dms system?

  - by prasanna

  I will be using one of the dms (document management system) which is java + jackrabbit + postgresql + jboss + openoffice based on ubuntu server 10.04. this is the only application i will running on my server. i want to speed up the performance of the system for this. can you give me tips for improvements of ubuntu server? can i change any settings which give fast system performance. My application will be used concurrently by around 70 - 80 people. We have total 600 users. they will constanly upload , download the files in dms. i am going to use dedicated dell server with minimum 4 gb of RAM. i appreciate help. thanks and regards, Prasanna

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• Taking Object Oriented development to the next level

  - by Songo

  Can you mention some advanced OO topics or concepts that one should be aware of? I have been a developer for 2 years now and currently aiming for a certain company that requires a web developer with a minimum experience of 3 years. I imagine the interview will have the basic object oriented topics like (Abstraction, Polymorphism, Inheritance, Design patterns, UML, Databases and ORMs, SOLID principles, DRY principle, ...etc) I have these topics covered, but what I'm looking forward to is bringing up topics such as Efferent Coupling, Afferent Coupling, Instability, The law of Demeter, ...etc. Till few days ago I never knew such concepts existed (maybe because I'm a communication engineer basically not a CS graduate.) Can you please recommend some more advanced topics concerning object oriented programming?

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• Calculate an AABB for bone animated model

  - by Byte56

  I have a model that has its initial bounding box calculated by finding the maximum and minimum on the x, y and z axes. Producing a correct result like so: The vertices are then stored in a VBO and only altered with matrices for rotation and bone animation. Currently the bounds are not updated when the model is altered. So the animated and rotated model has bounds like so: (Maybe it's hard to tell, but the bounds are the same as before, and don't accurately represent the rotated/animated model) So my question is, how can I calculate the bounding box using the armature matrices and rotation/translation matrices for each model? Keep in mind the modified vertex data is not available because those calculations are performed on the GPU in the shader. The end result I want is to have an accurate AABB the represents the animated model for picking/basic collision checks.

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• Dynamic PDF output from your .NET project with ReportLab PLUS

  Report Markup Language is an XML-style language for creating PDF documents. We've just written a sample ASP.NET project demonstrating how to use ReportLab's RML2PDF to create PDF documents from inside your .NET project. Create great looking custom dynamic PDFs from your website or application with the minimum of fuss. Download the sample project from here: RML with Microsoft .NET...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How to gain Professional Experience in Java/Java EE Development

  - by Deepak Chandrashekar

  I have been seeing opportunities go past me for just 1 reason: not having professional industry experience. I say to many employers that I'm capable of doing the job and show them the work I've done during the academics and also several personal projects which I took extra time and effort to teach myself the new industry standard technologies. But still, all they want is some 2-3 years experience in an industry. I'm a recent graduate with a Master's Degree in Computer science. I've been applying for quite a few jobs and most of these jobs require 2 years minimum experience. So, I thought somebody here might give me some realistic ideas about getting some experience which can be considered professional. Any kind of constructive comments are welcome.

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• Developer – Cross-Platform: Fact or Fiction?

  - by Pinal Dave

  This is a guest blog post by Jeff McVeigh. Jeff McVeigh is the general manager of Performance Client and Visual Computing within Intel’s Developer Products Division. His team is responsible for the development and delivery of leading software products for performance-centric application developers spanning Android*, Windows*, and OS* X operating systems. During his 17-year career at Intel, Jeff has held various technical and management positions in the fields of media, graphics, and validation. He also served as the technical assistant to Intel’s CTO. He holds 20 patents and a Ph.D. in electrical and computer engineering from Carnegie Mellon University. It’s not a homogenous world. We all know it. I have a Windows* desktop, a MacBook Air*, an Android phone, and my kids are 100% Apple. We used to have 2.5 kids, now we have 2.5 devices. And we all agree that diversity is great, unless you’re a developer trying to prioritize the limited hours in the day. Then it’s a series of trade-offs. Do we become brand loyalists for Google or Apple or Microsoft? Do we specialize on phones and tablets or still consider the 300M+ PC shipments a year when we make our decisions on where to spend our time and resources? We weigh the platform options, monetization opportunities, APIs, and distribution models. Too often, I see developers choose one platform, or write to the lowest common denominator, which limits their reach and market success. But who wants to be ?me too”? Cross-platform coding is possible in some environments, for some applications, for some level of innovation—but it’s not all-inclusive, yet. There are some tricks of the trade to develop cross-platform, including using languages and environments that ?run everywhere.” HTML5 is today’s answer for web-enabled platforms. However, it’s not a panacea, especially if your app requires the ultimate performance or native UI look and feel. There are other cross-platform frameworks that address the presentation layer of your application. But for those apps that have a preponderance of native code (e.g., highly-tuned C/C++ loops), there aren’t tons of solutions today to help with code reuse across these platforms using consistent tools and libraries. As we move forward with interim solutions, they’ll improve and become more robust, based, in no small part, on our input. What’s your answer to the cross-platform challenge? Are you fully invested in HTML5 now? What are your barriers? What’s your vision to navigate the cross-platform landscape?  Here is the link where you can head next and learn more about how to answer the questions I have asked: https://software.intel.com/en-us Republished with permission from here. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Intel

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• Could not apply stored configuration for monitors

  - by Hernantz

  Well this happened when I upgraded to Natty. Not only seems I can't change my resolution to higher than 1024x768 but it appears at the left and using only 70% of the monitor's width. I tried logging in but in ubuntu classic mode, and i was able to change it, but that trick did not work anymore. (May this be a compiz problem?) Anyways, here is my /var/log/Xorg.0.log http://pastebin.com/Ew4wwLab and lspci -nn | grep VGA: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) I tried using xrandr for adding manually a resolution of 1280x1768 but without luck. Here is the xrandr output Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) TV1 disconnected (normal left inverted right x axis y axis) 1280x1024 (0xc6) 109.0MHz h: width 1280 start 1368 end 1496 total 1712 skew 0 clock 63.7KHz v: height 1024 start 1027 end 1034 total 1063 clock 59.9Hz

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• cross resolution level design advice [on hold]

  - by Mike

  I was looking for some beginner advice regarding level design across multiple resolutions. I believe the answer is likely "it depends", but any input from anyone with real experience is very appreciated. Basically, I am building a 2D Super Metroid type game. If rooms/levels are to be a tiled grid, what are some general best practices for designing rooms when taking into account different resolutions? Since more or less tiles could fit vertically on a single screen depending on the resolution, is it better to design towards possibly having more of the room visible depending on the screen (with a bare minimum needed for gameplay), or should I fix the design at a certain tile height and scale the graphics?

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• Benchmarking CPU processing power

  - by Federico Zancan

  Provided that many tools for computers benchmarking are available already, I'd like to write my own, starting with processing power measurement. I'd like to write it in C under Linux, but other language alternatives are welcome. I thought starting from floating point operations per second, but it is just a hint. I also thought it'd be correct to keep track of CPU number of cores, RAM amount and the like, to more consistently associate results with CPU architecture. How would you proceed to the task of measuring CPU computing power? And on top of that: I would worry about a properly minimum workload induced by concurrently running services; is it correct to run benchmarking as a standalone (and possibly avulsed from the OS environment) process?

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• Restrict number of characters to be typed for af:autoSuggestBehavior

  - by Arunkumar Ramamoorthy

  When using AutoSuggestBehavior for a UI Component, the auto suggest list is displayed as soon as the user starts typing in the field. In this article, we will find how to restrict the autosuggest list to be displayed till the user types in couple of characters. This would be more useful in the low latency networks and also the autosuggest list is bigger. We could display a static message to let the user know that they need to type in more characters to get a list for picking a value from. Final output we would expect is like the below image Lets see how we can implement this. Assuming we have an input text for the users to enter the country name and an autosuggest behavior is added to it. <af:inputText label="Country" id="it1"> <af:autoSuggestBehavior /> </af:inputText> Also, assuming we have a VO (we'll name it as CountryView for this example), with a view criteria to filter out the VO based on the bind variable passed. Now, we would generate View Impl class from the java node (including bind variables) and then expose the setter method of the bind variable to client interface. In the View layer, we would create a tree binding for the VO and the method binding for the setter method of the bind variable exposed above, in the pagedef file As we've already added an input text and an autosuggestbehavior for the test, we would not need to build the suggested items for the autosuggest list.Let us add a method in the backing bean to return us List of select items to be bound to the autosuggest list. padding: 5px; background-color: #fbfbfb; min-height: 40px; width: 544px; height: 168px; overflow: auto;"> public List onSuggest(String searchTerm) { ArrayList<SelectItem> selectItems = new ArrayList<SelectItem>(); if(searchTerm.length()>1) { //get access to the binding context and binding container at runtime BindingContext bctx = BindingContext.getCurrent(); BindingContainer bindings = bctx.getCurrentBindingsEntry(); //set the bind variable value that is used to filter the View Object //query of the suggest list. The View Object instance has a View //Criteria assigned OperationBinding setVariable = (OperationBinding) bindings.get("setBind_CountryName"); setVariable.getParamsMap().put("value", searchTerm); setVariable.execute(); //the data in the suggest list is queried by a tree binding. JUCtrlHierBinding hierBinding = (JUCtrlHierBinding) bindings.get("CountryView1"); //re-query the list based on the new bind variable values hierBinding.executeQuery(); //The rangeSet, the list of queries entries, is of type //JUCtrlValueBndingRef. List<JUCtrlValueBindingRef> displayDataList = hierBinding.getRangeSet(); for (JUCtrlValueBindingRef displayData : displayDataList){ Row rw = displayData.getRow(); //populate the SelectItem list selectItems.add(new SelectItem( (String)rw.getAttribute("Name"), (String)rw.getAttribute("Name"))); } } else{ SelectItem a = new SelectItem("","Type in two or more characters..","",true); selectItems.add(a); } return selectItems; } So, what we are doing in the above method is, to check the length of the search term and if it is more than 1 (i.e 2 or more characters), the return the actual suggest list. Otherwise, create a read only select item new SelectItem("","Type in two or more characters..","",true); and add it to the list of suggested items to be displayed. The last parameter for the SelectItem (boolean) is to make it as readOnly, so that users would not be able to select this static message from the displayed list. Finally, bind this method to the input text's autosuggestbehavior's suggestedItems property. <af:inputText label="Country" id="it1"> <af:autoSuggestBehavior suggestedItems="#{AutoSuggestBean.onSuggest}"/> </af:inputText>

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