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  • pdflush hanging on Amazon EBS drives when using multi-GB files - any workaround?

    - by rhh
    Hello, When I run gunzip on a 1.7GB file (which generates an 8GB file) on an EBS volume, pdflush freezes after gunzip runs and the CPU hangs indefinitely at 100% IO Wait. Here's the output from 'ps aux | grep pdflush'. Note the D status root 87 0.0 0.0 0 0 ? D 06:18 0:00 pdflush root 88 0.0 0.0 0 0 ? D 06:18 0:00 pdflush The only solution is to kill the pdflush processes. The processes don't die immediately either. This problem is repeatable and happens with new instances. I'm running 2xlarge instances and I have way more RAM free than is being used (i.e. /proc/meminfo shows 20+GB MemFree) Has anyone found a workaround to this problem in the past? Thanks for any thoughts. Robert

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  • Cannot establish ssh connection to computer on local network

    - by ovangle
    I've just (re)installed ubuntu 11.10 on my main pc, and the connection times out every time I try to ssh connect to my laptop (over the local network) to retrieve the files I backed up there. The connection times out every time I try to connect. I can establish a connection in the other direction without issue. Here's the verbose output I get when I try to connect: ovangle@ruby-EP43-DS3:~$ ssh -v [email protected] OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e 6 Sep 2011 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.1.1.4 [10.1.1.4] port 22. debug1: connect to address 10.1.1.4 port 22: Connection timed out ssh: connect to host 10.1.1.4 port 22: Connection timed out ssh is installed on both machines, and I've tried deleting '~/.ssh/known_hosts' on both machines, still nada. I've changed the sshd logging on the laptop to VERBOSE and restarted the daemon (because I wasn't getting any relevant syslog entries otherwise), and this is the log for the most recent connection attempt. EDIT: posted wrong logs last time. They just showed that there was a connection received, they weren't actually the sshd logs (which were in auth.log as I recently discovered). Unfortunately, that log is filling up with extremely weird error messages and it gives me no information about the connection. Nov 8 16:02:18 ovangle-A6Rp pkexec: pam_unix(polkit-1:session): session opened for user root by (uid=1000) Nov 8 16:02:18 ovangle-A6Rp pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device Nov 8 16:02:18 ovangle-A6Rp pkexec[6270]: ovangle: Executing command [USER=root] [TTY=unknown] [CWD=/home/ovangle] [COMMAND=/usr/sbin/gnome-power-backlight-helper --set-brightness 2] Nov 8 16:02:19 ovangle-A6Rp pkexec: pam_unix(polkit-1:session): session opened for user root by (uid=1000) Nov 8 16:02:19 ovangle-A6Rp pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device Nov 8 16:02:19 ovangle-A6Rp pkexec[6273]: ovangle: Executing command [USER=root] [TTY=unknown] [CWD=/home/ovangle] [COMMAND=/usr/sbin/gnome-power-backlight-helper --set-brightness 7]

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  • how do I 'hard refresh' a shared directory?

    - by jcollum
    VMWare player 4.0.1 build-528992 I added a file to a shared directory in Windows 7. When I ls -l that directory in Ubuntu 11 it looks like: (2nd line) ls: cannot access item_spec.rb: No such file or directory -rwxrwxrwx 1 root root 300 2012-01-11 12:05 user_spec.rb -????????? ? ? ? ? ? item_spec.rb How can I get the folder to "refresh"? I need to use this file in Ubuntu. I think it will be present if I restart the VM, but that seems excessive. This looks like a bug. I asked this question on the VMWare forums and haven't gotten a response. Output of ls -l for parent: drwxrwxrwx 1 root root 8192 2012-01-13 13:26 the_project

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  • Complex shading using one single (small) texture

    - by teodron
    Recently I stumbled upon a demo reel in UDK about how one can attain beautiful results using just one (rather tiny) texture that's being sent to the shader pipeline. The famous link is this one. Basically, the author states that they've used just one texture and give a snapshot of the technique here. I see that every RGBA channel contains different grayscale information.. and that info could be used to inside a shader to obtain a colour blended output. The problem is that the reel displays a fairly complex scene. To top that, the author even makes use of a normal map. How did they manage to fit a normal map in an already cluttered texture? It makes sense to have a half-space normal map by using only RG from an RGB texture, but what about the rest of the information? Since it was proven to be possible, could someone please explain how it was done (the big picture, not the dirty details!)!? Here's the texture being used. Click to see in full size.

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  • Catch headset pause/play keypresses in Windows

    - by akshay2000
    I have a new Ultrabook which has single audio jack for input and output instead for separate 3.5 mm jacks we used to have on older machines. The jack is probably similar to American Audio Jack specification or like the one found on Macbook Pro. I have tried to use it with the Apple, HTC, Nokia earphones which ship with most of the smartphones. Microphone on the headset works the way it should. Thing is that the headsets also come with remote controls to control volume and playback. I am sure that those key presses are sent to the Windows. I was hoping to catch those events and bind those to actual media keys so that I can control music playback. I guess this happens on Macs. I want to do the similar thing on the Windows. I'm just not sure where I can catch the events. Driver level? Application level?

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  • Samsung TV connected to PC for Powerpoint

    - by Skaughty
    I have a 42" Samsung LCD TV connected to a Dell computer with a PCI Radion 9000 via a 35' VGA cable. It's purpose is to run power point presentations over the TV for our retail store. I have tried every combination of button clicking on the video card options, and everything on the TV, and I still get black bars on the top and bottom of the image. It looks like I am watching a old wide screen movie on a full screen TV. The TV's suggested resolution is 1024x768, and that is what the output is set to. I have tried this with a nVida PCI card as well with the same results.

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  • How do I list all the relation variables and debug them interactively?

    - by mfisch
    I'm writing a charm that requires a mysql database, I found from looking at other charms that this (below) is how I get the info about the database: user=`relation-get user` password=`relation-get password` mysqlhost=`relation-get private-address` But I just found that from reading the wordpress charm example, is there a way to show all the relation variables that I can use? Also, while debugging my db-relation-changed script, I wanted to ssh into my host and interactively run those commands, for example relation-get user, but it didn't work. I resorted to having to restart everything and use juju log to print them out. This wasted a lot of time. Is there a way to print out these relations, either from my dev box or from the instance running my charm? (Below is what happens when I tried to interactively run relation-get): ubuntu@mfisch-local-tracks-0:~$ relation-get user usage: relation-get [-h] [-o OUTPUT] [-s SOCKET] [--client-id CLIENT_ID] [--format FORMAT] [--log-file FILE] [--log-level CRITICAL|DEBUG|INFO|ERROR|WARNING] [-r RELATION ID] [settings_name] [unit_name] No JUJU_AGENT_SOCKET/-s option found I tried juju debug-hooks tracks/0 -e local, that dropped me into a shell and relation-get still failed.

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  • Multiple monitors on ATI Radeon HD 5450 1GB DDR2 (Brand: Sapphire)

    - by Robert
    From other posts here, I understand that it might be possible to use up to 3 monitors on this card. My understanding (from the other posts here as well) is that since I have a HDMI output, I do not have a 'DisplayPort', right ? Mine has indeed 3 ports: DVI, HDMI and VGA. Can I have dual-monitor using both the HDMI and DVI ports simulataneously (I am not looking for Eyefinity, but simply extended desktop). Currently I am using dual monitor with DVI and VGA but will replace my 17 inches next week with a new (larger) one that has both VGA and DVI, so I intend to use both monitors connected digitally. I intend to purchase a cable ''HDMI to DVI''(MM) to do so on the second monitor. Optimal resolution on the one I intend to keep (22 inches) : 1680 x 1050, primary monitor. New one (24 inches) has an optimal resolution of 1920 x 1080. Am I running for problems ? Thanks, Rob

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  • DEBIAN-likes to detect the keyboard layout

    - by blietaer
    I would like to find out the current keyboard layout of a debian-like OS. env-var? /etc/? locales? Context: __ Playing around with RFID reader in serial, using python to output to console through uinput/ The thing is, doing the conversion from fake-rfid-keyboard-codes to code sent to uinput/, I would better know if I am using a QWERTY or an AZERTY ('a' becoming 'q', etc...) Back here in Belgium, especially during the event I am working on we are highly susceptible to have both keyboard layouts, I have to support both 'on-the-fly' __ Thanx !

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  • Solaris x86: Non working keys on keyboard (<, >, #, |)

    - by Thomas
    Hello everyone, I have a new installation of Solaris 10 10/09 on x86 hardware. The attached keyboard has a normal German layout. The system is configured accordingly by 'kbd -s'. The generic keys (letter, number, umlaut) work fine. Unfortunately some keys like <, , | or # do not. They produce no output on the text console at all. I tried PS/2 and USB keyboards. I cannot test it under X11 as it is currently not working. Thanks.

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  • SQL Server: How to report error from a job's step of PowerShell type

    - by Ariel
    I have a SQL job whose step of 'PowerShell' type does 'exit 1' if encounters an error i.e. $ErrorActionPreference='stop'; trap{"$_"; exit 1} Problem is, SQL Server doesn't pay attention to that exit code, and reports "The step did not generate any output. Process Exit Code 0. The step succeeded." Any idea how to successfully tell SQL Server from a PowerShell step that something went wrong? Thanks in advance.

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  • Kubuntu never gets to the login screen

    - by searchfgold6789
    I am not sure if Xorg is using the right device... The system in question is an A4-1400 CPU with built-in Radeon Graphics. I added a PCIe Radeon HD 5750, and changed the BIOS so it would use that card automatically. Now it appears that I can see output from the TV plugged into the HDMI port, and boot into recovery mode, but cannot get to a desktop - X doesn't start. It just freezes at the Kubuntu splash screen. I have no idea how to get X to use the proper graphics card. I pasted the Xorg.log to http://paste.ubuntu.com/6261137/. And the Xorg.conf generated by aticonfig --initial is at http://paste.ubuntu.com/6261161/ Also, see lspci and lshw -c display outputs. I can provide more information, but something does tell me X is not using the right graphics card and I've no idea where to begin how to fix it... I faced a similar issue before with another distribution but found no information anywhere on how to make X use a specific graphics card. Or maybe it's not that simple.

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  • Windows server backup fails at 40%

    - by Abraham Borbujo
    I´m configuring windows server backup as full system backup. It starts fine, but when it´s making system drive (c:) backup it stops at 40% every time i try. It only backups 7.28 GB of the total 18.19 GB. I tried changing destination drive and also checking c: filesystem in order to find any problem, but it seems to be ok and the problem is still the same. I got a message telling that the backup is completed with warnings. The warning details says that it didn´t complete backup because of input/output error in source or destination. Thanks for your help.

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  • is my xml cached by IIS7?

    - by user22817
    Hi guys, I have a flashplayer on my website. Behind it, there is an xml file which keeps the configuration of the products shown on that flashplayer. I do not understand why, if i modify something in the xml config file, the flash player is not updated at that moment, but after hours... Do you know why? I have not defined any rule for output caching in IIS7 so there is probably something default? Of course, i've tried Ctrl+f5 but does not work. Thanks.

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  • Process video (canon) mov files

    - by user613326
    Well i would like to program something to process HDR made by magic lantern a canon add on. That doesnt change the format its just some kind of add on, that can produce HDR video. Its a bit complex to make such videos so i would like to use some math and make it myself and makee the software freeware (as a thanks to the creators of magic lantern). The problem with that HDR that normal converts have a lot of artifacts, and i would like to make something (for free) using some new algorithms. I have made, this works fine on individual images, my ideas work. I would want to do this on that canon 60d video format. Canons mov format, and am so far out of luck to read that out. It must be possible dough as i know in some projects they do it too. I would not like to export a movie first to jpg and then back to video as that requires a lot of disk space, i would like to retrieve individual frames, do my math based multiple frames, and then build a new movie on it. The output video can be of any type, avi or mov again. Does anyone know of a library who can do that ? (read and save), So i could use it in a C# project (i prefer C# above c++, but c++ is an option to program in to for me).

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  • Banshee gapless playback does not work when playing mp3s

    - by ComputerGuy505
    Even though I have gapless playback enabled in Banshee's settings menu, there is a very short pause between songs. This might be due to the fact that my hard drive's partitions seem wierd. fdisk -l produces this output: Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x4a73c3cb Device Boot Start End Blocks Id System /dev/sda1 * 2048 409599 203776 7 HPFS/NTFS/exFAT /dev/sda2 409600 724153740 361872070+ 7 HPFS/NTFS/exFAT /dev/sda3 1456826368 1465145343 4159488 c W95 FAT32 (LBA) /dev/sda4 724154366 1456826367 366336001 5 Extended Partition 4 does not start on physical sector boundary. /dev/sda5 1440159744 1456826367 8333312 82 Linux swap / Solaris /dev/sda6 724154368 1440159743 358002688 83 Linux Partition table entries are not in disk order Playing mp3's from /dev/sda2 or /dev/sda6 produces this problem. I don't seem to have gapless playback on Rhythmbox or Clementine either, if those media players are supposed to have it. I'm not sure what other info to provide. This is just annoying to me. Thanks for any help.

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  • page up/down print ~ instead of history search in terminal

    - by Desmond
    I am on a Macbook Pro with mac os x 10.8.2 I have set: page up: \033[5~ page down: \033[6~ in terminal keyboard settings (pressing esc to get \033). My ~/.xinputrc is: # Be 8 bit clean. set input-meta on set output-meta on set convert-meta off # Auto completion options set show-all-if-ambiguous on set completion-ignore-case on # Keybindings "\e[1~": beginning-of-line # Home key "\e[4~": end-of-line # End key "\e[5~": history-search-backward # Page Up "\e[6~": history-search-forward # Page Down "\e[3~": delete-char # Delete key "\e[5C": forward-word # Ctrl+right "\e[5D": backward-word # Ctrl+left I am just following a guide found on internet (actually there are a lot of guide really similar): http://macimproved.wordpress.com/2010/01/04/fix-page-updown-home-end-in-terminal/ Unfortunately, the only (terrific) result is that when I press page up (fn + up arrow) just a "~" is printed in the terminal.

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  • What is a "good" tool to password-protect .pdf files?

    - by Marius Hofert
    What is a "good" tool to encrypt (password protect) .pdf files? (without being required to buy additional software; the protection can be created under linux but the password query should work on Windows, too) I know that zip can do it: zip zipfile_name_without_ending -e files_to_encrypt.foo What I don't like about this is that for a single file, you have to use Winzip to open the zip and then click the file again. I rather would like to be prompted for a password when opening the .pdf (single file case). I know that pdftk can do this: pdftk foo.pdf output foo_protected.pdf user_pw mypassword. The problem here is that the password is displayed in the terminal -- even if you use ... user_pw PROMPT. But in the end you get a password-protected .pdf and you are prompted for the password when opening the file.

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  • Ubuntu 9.10 freezes when HDMI port is connected

    - by Felipe Hummel
    Hi, I have a Sony Vaio FW350 with a HDMI output. I'm trying to use it under Ubuntu 9.10 with a LG LCD monitor 21,5'. I've tried two approaches: Boot the laptop with the HDMI cable connected and monitor turned on. Result: LCD Monitor keeps turned on but the whole screen is black and Ubuntu do not seem to be initializing. Boot Ubuntu until the end. I then connect the HDMI cable into the Laptop. The mouse and the whole system freezes. In both cases the only way to turn off the laptop is holding the power button. I've looked around the internet for similar problems, but only found workarounds for the same problem with VGA input, not HDMI. I also tried to use metacity before connecting the cable, but still got the same result. Any hints?

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  • Burning iso images with wodim loses 2048 bytes at the end

    - by Grumbel
    If I burn an iso image with: wodim -data dev=/dev/scd0 in.iso and then read it back out with: dd if=/dev/scd0 of=out.iso The resulting files are not identical, out.iso is 2048 bytes shorter then in.iso. What is going on here and how can I fix it? Using Ubuntu 10.04 and Wodim 1.1.10 PS: dd always ends with an Input/output error, not just with this CD, but with all of them. I think its just a limitation of dd, but an explanation why it happens and how to avoid it would be welcome as well.

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  • loss of sound in ubuntu 12.04

    - by Leo Simon
    I'm running Linux E6520 3.2.0-56-generic #86-Ubuntu SMP Wed Oct 23 09:20:45 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux on a Dell Latitude E6530. (This is a new machine; have run the same version of linux on an older machine for a year, without this happening.) I've been losing sound regularly, though have not been able to isolate the trigger for this. I've scoured the web on this subject, in particular https://help.ubuntu.com/community/SoundTroubleshootingProcedure and Audio stopped working suddenly in 12.04 Nothing from the first site seemed to work for me. From the second site, I learned enough to be able to fix the problem when it happens, but nothing on the web has helped me figure out why the problem is happening in the first place. Patching together stuff from the web, and with some blind luck, I've found that the following steps seem to restore sound pulseaudio --kill pulseaudio --start pavucontrol -> output devices Click on the "Mute audio" icon, which mutes audio Click on the "Mute audio" icon, which unmutes audio. This obviously doesn't make sense: audio wasn't muted in the first place, but somehow, magically, toggling mute audio off and on seems to reset something. Can anybody suggest from this information why sound would be disappearing in the first place (it seems as though something is getting muted at the system level, but I don't know what)? a simpler (command-line/script) way of restoring sound, in particular, is it possible to reset pavucontrol from the commandline? Some other pieces of information that may be of use: The problem is clearly happening at the system level, since I've set up a clean new user, and this user has the same problems that I do. So user fixes like deleting the .pulse directory aren't (and don't) help. Sound works fine in Windows (dual-boot) so it's not a hardware problem Any help/suggestions on this would be most appreciated.

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  • Cherokee high virtual memory usage even after disabling I/O Cache

    - by nidheeshdas
    I've Ubuntu 10.04LTS 64-bit running on a openvz container and Cherokee 1.0.8 compiled from source. The virtual memory usage of cherokee-worker is around 430 MB even after disabling I/O cache from Advanced - I/O Cache - NOT enabled. Is this issue particular to openvz? Because many people reported to have successfully reduced virt memory usage by disabling io cache. htop output: http://imgur.com/z5JEL.jpg (newbies not allowed to post image.) thanks in advance. nidheeshdas

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  • Strange ports on default install of W7

    - by Sabre
    I have a base new install of windows 7, and when I went to look for something else I saw the attached netstat output. What concerns me is that this is Windows + Truecrypt + drivers, nothing else installed. The sequential high ranged ports belonging to several different seemingly not out of place services seemed odd. So I torched the install, used Active@ to scrub the disk, re-downloaded the ISO from MSDN, and did a fresh reinstall, viola, they are there again. It just seems out of place, I have seen a many netstats over the years, this one just strikes me as odd, so I started thinking rootkit? (JUst FYI, when I reloaded I named the machine "Error" so that is why the task manager reads the computer name as such.) So I would like to know if anyone else could explain it, and therefore is may be normal, or would they be worried as well, and should I start considering I have some very strange thing occuring on my network?

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  • Connect to a particular network connection from terminal

    - by RanRag
    I am currently using Reliance netconnect USB modem. The problem I am facing is my USB modem disconnects itself at 22:00 PM IST everyday. Now, sometimes what I do is start some downloading and leave my laptop for 2-3 hours in this case if my network disconnects it is a problem for me. So, what I used to do in windows is make a python script and execute rasdial myconnection_name to automate the connection process in my absence. Now I want to achieve something similar in linux. So, what are my alternatives for rasdial like tool in linux to automatically connect to a particular connection . I am using ubuntu 12.04 and here is my nm-tool output.

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  • What software can I use to get statistics about the programs I use most? [closed]

    - by pinouchon
    I am looking for software that reports statistics about my program usage over time. It should display output something like this (numbers are made up): Program usage today: Youtube (Chrome) 42:10 9.42% NetBeans 30:52 6.33% Google search (Chrome) 12:03 3.20% Windows explorer 5:43 1.54% Putty 2:23 0.89% ? ? ? Features I look for: Advanced statistics: ability to view a chart, to see statistics today, this week, this month. Program usage should be based on the title of the active window. The time where the user is idle shouldn't count. Ability to group some windows title together, for example, I want to group titles as Stack Overflow and * - Stack Overflow together, same thing for every website and explorer windows. Do you know a program that does something similar?

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