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• ALERT: Error Processing US Wage Attachment Elements In Payroll Run After RUP Patches

  - by LuciaC

  Customers who have run the Upgrade Wage Attachments process after applying the 2012 RUP are reporting errors similar to those listed below when either running a quickpay or processing a payroll for employee(s) with involuntary deductions. Error: HR_51118_HRPROC_ERR_ON_ASG ASGNO 1115 APP-PAY-51118: Error was encountered when processing assignment 1115 HR_51119_HRPROC_ERR_OCC_ON_ET ETNAME: Garnishment 3 APP-PAY-51119: Error was encountered when processing Element Type Garnishment 3 HR_6881_HRPROC_ORA_ERR SQLERRMC ORA-01403: No data found SQL_NO 520 TABLE_NAME pay_input_values_f APP-PAY-06881:Error ORA-01403: no data found has occured in table pay_input_values_f at location 520 This issue was logged in Bug 14679161 - QUICK PAY ERROR AFTER RUP (2012) AND WAGE ATTACHMENT UPGRADE APP-PAY-06881. The following one off patches have been released to My Oracle Support to resolve this issue*: 11i -  Patch 14679161 12.0 - Patch 14849394:R12.PAY.A 12.1 - Patch 14849394:R12.PAY.B * IMPORTANT:  Depending on when/if customers have run the Wage Attachment upgrade process will determine the appropriate action to take. Any customer who is encountering the above error and/or has run the Wage Attachment upgrade process AFTER applying the 2012 RUP (applicable to their release level) should log a Service Request with Oracle Support to receive assistance on the necessary steps to take to resolve the problem BEFORE applying the above patch. Any customer who has not yet run the Wage Attachment Upgrade process (either before or after applying the 2012 RUP), should follow the action plan documented in the patch readme. For those customers who have already run the Wage Attachment Upgrade process BEFORE applying the 2012 RUP, should apply the patch (applicable to your release) listed above. Be sure to run any post install processes, such as the data install utility and HR global driver.  See the patch readme for full details. Please consult Note 404478.1: Americas (US, CA, MX) HCM High Priority Alert for the latest Alert status.

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• Hardware compatibility on H97 chipset/hardware support

  - by user3238850

  I am aware that there is documentation about compatibility but it is way out dated. I am also aware that there is a hardware compatibility page on Ubuntu website, but that one is focused on the whole box rather than a single piece of hardware. I have some experience with Linux OS, and some experience playing Ubuntu Server in a virtual machine, but never worked on a machine that lives in the real internet. I am building a home server with an Intel H97 chipset motherboard. I have looked at several models and none of them has Linux in the supported OS category. I have the experience of installing Ubuntu Desktop 14.04 on my 4-years-old lap top, and except for some system errors on start up, there is not too much I can complain about, so I guess I should be fine. However, this time I am going to install Ubuntu Server 14.04 on a relatively new piece of hardware(I went to http://linux-drivers.org/ but found nothing really helpful). For example the ASUS motherboard has M.2 socket and Intel LAN I218V chip, the Gigabyte motherboard has two LAN chips(Intel LAN WGI217V and ATHEROS AR8161-BL3A-R). So I really want to make sure everything will work. Usually I would just trust Ubuntu and buy all hardware I need, but basing on my past experience with the Ubuntu Desktop version on my lap top, I am not so convinced. There is an easily noticeable difference: when the system is idle, the fan runs much more frequently and longer under Ubuntu. This leads to my suspicion that generally hardware will have worse support for Ubuntu, which is no surprising at all but enough for me to put this post here. And as far as I know, some Intel CPU features come with software that usually will not run under Linux. Any help, idea or thoughts would be greatly appreciated!

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• Failing to upgrade to linux-image-3.0.0-26-generic

  - by Dan Lee

  When I try to upgrade linux-image-3.0.0-26-generic I get following problems: dpkg-deb (subprocess): data: internal bzip2 read error: 'DATA_ERROR' dpkg-deb: error: subprocess <decompress> returned error exit status 2 dpkg: error processing /var/cache/apt/archives/linux-image-3.0.0-26-generic_3.0.0-26.42_amd64.deb (--unpack): short read on buffer copy for backend dpkg-deb during `./lib/modules/3.0.0-26-generic/kernel/drivers/scsi/fnic/fnic.ko' No apport report written because MaxReports is reached already Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.0.0-26-generic /boot/vmlinuz-3.0.0-26-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.0.0-26-generic /boot/vmlinuz-3.0.0-26-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.0.0-26-generic_3.0.0-26.42_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-3.0.0-26-generic; however: Package linux-image-3.0.0-26-generic is not installed. I don't know why this happens to me; earlier upgrades always worked without problems. Does anybody know how to fix this?

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• Interpreting Others' Source Code

  - by Maxpm

  Note: I am aware of this question. This question is a bit more specific and in-depth, however, focusing on reading the actual code rather than debugging it or asking the author. As a student in an introductory-level computer science class, my friends occasionally ask me to help them with their assignments. Programming is something I'm very proud of, so I'm always happy to oblige. However, I usually have difficulty interpreting their source code. Sometimes this is due to a strange or inconsistent style, sometimes it's due to strange design requirements specified in the assignment, and sometimes it's just due to my stupidity. In any case, I end up looking like an idiot staring at the screen for several minutes saying "Uh..." I usually check for the common errors first - missing semicolons or parentheses, using commas instead of extractor operators, etc. The trouble comes when that fails. I often can't step through with a debugger because it's a syntax error, and I often can't ask the author because he/she him/herself doesn't understand the design decisions. How do you typically read the source code of others? Do you read through the code from top-down, or do you follow each function as it's called? How do you know when to say "It's time to refactor?"

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• Better way to generate enemies of different sub-classes

  - by KDiTraglia

  So lets pretend I have an enemy class that has some generic implementation and inheriting from it I have all the specific enemies of my game. There are points in my code that I need to check whether an enemy is a specific type, but in Java I have found no easier way than this monstrosity... //Must be a better way to do this if ( enemy.class.isAssignableFrom(Ninja.class) ) { ... } My partner on the project saw these and changed them to use an enum system instead public class Ninja extends Enemy { //EnemyType is an enum containing all our enemy types public EnemyType = EnemyTypes.NINJA; } if (enemy.EnemyType = EnemyTypes.NINJA) { ... } I also have found no way to generate enemies on varying probabilities besides this for (EnemyTypes types : enemyTypes) { if ( (randomNext = (randomNext - types.getFrequency())) < 0 ) { enemy = createEnemy(types.getEnemyType()); break; } } private static Enemy createEnemy(EnemyType type) { switch (type) { case NINJA: return new Ninja(new Vector2D(rand.nextInt(getScreenWidth()), 0), determineSpeed()); case GORILLA: return new Gorilla(new Vector2D(rand.nextInt(getScreenWidth()), 0), determineSpeed()); case TREX: return new TRex(new Vector2D(rand.nextInt(getScreenWidth()), 0), determineSpeed()); //etc } return null } I know java is a little weak at dynamic object creation, but is there a better way to implement this in a way such like this for (EnemyTypes types : enemyTypes) { if ( (randomNext = (randomNext - types.getFrequency())) < 0 ) { //Change enemyTypes to hold the classes of the enemies I can spawn enemy = types.getEnemyType().class.newInstance() break; } } Is the above possible? How would I declare enemyTypes to hold the classes if so? Everything I have tried so far as generated compile errors and general frustration, but I figured I might ask here before I completely give up to the huge mass that is the createEveryEnemy() method. All the enemies do inherit from the Enemy class (which is what the enemy variable is declared as). Also is there a better way to check which type a particular enemy that is shorter than enemy.class.isAssignableFrom(Ninja.class)? I'd like to ditch the enums entirely if possible, since they seem repetitive when the class name itself holds that information.

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• Cross Apply Ambiguity

  - by Dave Ballantyne

  Cross apply (and outer apply)  are a very welcome addition to the TSQL language.  However, today after a few hours of head scratching, I have found an simple issue which could cause big big problems. What would you expect from this statement ? select * from sys.objects b join sys.objects a on a.object_id = object_id No prizes for guessing SQL server errors with “Ambiguous column name 'object_id'”. What would you expect from this statement ? Select * from sys.objects a cross apply( Select * from sys.objects b where b.object_id = object_id) as c Surprisingly, perhaps, the result is a cross join of sys.objects.  Well, what happened there ? If you look at the apply statement, within the where clause, only one of the conditions is qualified with a table name.  This meant that is has be interpreted as “b.object_id = b.object_id” causing the cross apply to have no join the the parent sys.objects table and causing the cross join. The fix is , obviously, simple Select * from sys.objects a cross apply( Select * from sys.objects b where b.object_id = a.object_id) as c So why no “Ambiguous column name ” error ?  I’ve raised a connect item on this issue here.

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• puImportError: No module named pyexpat

  - by Candy Gupta

  Whenever I try to launch 'hotot' I get this errors. This error also appears if i try something stupid in terminal along with "No Module named gdm" Error in sys.excepthook: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 64, in apport_excepthook from apport.fileutils import likely_packaged, get_recent_crashes File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 1, in <module> from apport.report import Report File "/usr/lib/python2.7/dist-packages/apport/report.py", line 16, in <module> from xml.parsers.expat import ExpatError File "/usr/lib/python2.7/xml/parsers/expat.py", line 4, in <module> from pyexpat import * ImportError: No module named pyexpat I am on Ubuntu 12.04 python 2.7.3. I found similar problem here https://github.com/Kindari/SublimeXdebug/issues/5 but did not work. as asked below I am inserting this too ls /usr/lib/python2.7/lib-dynload/ audioop.so _codecs_cn.so _codecs_jp.so crypt.so _ctypes_test.so _elementtree.so _io.so _multibytecodec.so _sqlite3.so _bsddb.so _codecs_hk.so _codecs_kr.so _csv.so _curses_panel.so _heapq.so _json.so _multiprocessing.so _testcapi.so bz2.so _codecs_iso2022.so _codecs_tw.so _ctypes.so _curses.so _hotshot.so _lsprof.so Python-2.7.egg-info

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• Fuzzing for Security

  - by Sylvain Duloutre

  Yesterday, I attended an internal workshop about ethical hacking. Hacking skills like fuzzing can be used to quantitatively assess and measure security threats in software.  Fuzzing is a software testing technique used to discover coding errors and security loopholes in software, operating systems or networks by injecting massive amounts of random data, called fuzz, to the system in an attempt to make it crash. If the program contains a vulnerability that can leads to an exception, crash or server error (in the case of web apps), it can be determined that a vulnerability has been discovered.A fuzzer is a program that generates and injects random (and in general faulty) input to an application. Its main purpose is to make things easier and automated.There are typically two methods for producing fuzz data that is sent to a target, Generation or Mutation. Generational fuzzers are capable of building the data being sent based on a data model provided by the fuzzer creator. Sometimes this is simple and dumb as sending random bytes, swapping bytes or much smarter by knowing good values and combining them in interesting ways.Mutation on the other hand starts out with a known good "template" which is then modified. However, nothing that is not present in the "template" or "seed" will be produced.Generally fuzzers are good at finding buffer overflow, DoS, SQL Injection, Format String bugs etc. They do a poor job at finding vulnerabilites related to information disclosure, encryption flaws and any other vulnerability that does not cause the program to crash.  Fuzzing is simple and offers a high benefit-to-cost ratio but does not replace other proven testing techniques.What is your computer doing over the week-end ?

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• Automatic TRIM vs. manual TRIM

  - by Eike Cochu

  I am currently trying to find out how to trim with my new TP and was wondering about the difference of manual/online trimming. Here is my setup: ThinkPad T430s with SSD Samsung 830, 128GB and Xubuntu 12.10, here are some outputs to check if trim will work on my system (got these from here: http://wiki.ubuntuusers.de/SSD/TRIM) root@eike-tp:~# sudo hdparm -I /dev/sda | grep -i TRIM * Data Set Management TRIM supported (limit 8 blocks) First, I tried the online trimming: How to enable TRIM? my fstab with discard inserted: UUID=d6c49c17-a4f1-466c-9f7e-896c20db3bba / ext4 discard,noatime,errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=a0322f5f-c6c1-4896-863f-668f0638d8cf none swap sw 0 0 tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0 I tried to test if it works (but I don't get any zeroes when I try it with /dev/sda), but found out that this method is only possible with SSD type 2 and I seem to have type 3. So I don't know if it works or not. The Ubuntuwiki (first link) recommends manual trimming, so I set up a daily cronjob instead of discard: #!/bin/sh LOG=/var/log/batched_discard.log echo "*** $(date -R) ***" >> $LOG fstrim -v / >> $LOG the wiki article suggests weekly or daily. Now to my questions: How often executes the automated trim? How often is recommended? Online vs. manual trimming? Thank you for your help

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• ASP.NET MVC Cookbook &ndash; public review

  - by Andrew Siemer - www.andrewsiemer.com

  I have recently started writing another book.  The topic of this book is ASP.NET MVC.  This book differs from my previous book in that rather than working towards building one project from end to end – this book will demonstrate specific topics from end to end.  It is a recipe book (hence the cookbook name) and will be part of the Packt Publishing cookbook series.  An example recipe in this book might be how to consume JSON, creating a master /details page, jquery modal popups, custom ActionResults, etc.  Basically anything recipe oriented around the topic of ASP.NET MVC might be acceptable.  If you are interested in helping out with the review process you can join the “ASP.NET MVC 2 Cookbook-review” group on Google here: http://groups.google.com/group/aspnet-mvc-2-cookbook-review Currently the suggested TOC for the project is listed.  Also, chapters 1, 2, and most of 8 are posted.  Chapter 5 should be available tonight or tomorrow. In addition to reporting any errors that you might find (much appreciated), I am very interested in hearing about recipes that you want included, expanded, or removed (as being redundant or overly simple).  Any input is appreciated!  Hearing user feedback after the book is complete is a little late in my opinion (unless it is positive feedback of course). Thank you!

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• Canon MG6100 series USB Printer not mounting

  - by user35201

  Printer MP6150 driver installed itself upon plugging in the printer. Printer is recognized (lsusb shows it) but does not mount. If the printer is recognized, the driver must be working (or?), but something is blocking the system from mounting the printer. Tried the usual things: power of printer, restart Ubuntu etc. Listed below result of lsusb and fstab: hans@kontor-linux:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 04a9:174a Canon, Inc. Bus 002 Device 002: ID 1058:1001 Western Digital Technologies, Inc. External Hard Disk [Elements] Bus 004 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser hans@kontor-linux:~$ sudo cat /etc/fstab [sudo] password for hans: # /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=eaf3b38d-1c81-4de9-98d4-3834d674ff6e / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=93a667d3-6132-45b5-ad51-1f8a46c5b437 none swap sw 0 0

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• Is '@' Error Suppression a Valid Technique for Testing for an Optional Array Key?

  - by MikeSchinkel

  Rarst and I were debating offline about the use of the '@' error suppression operator in PHP, specifically for use to test for existence of "optional" array keys, i.e. array keys that are being used as a switch here a their lack of existence in the array is functionally equivalent to the array having the key with a value equaling false. Here is pseudo-code for this scenario: function do_something( $args = array() ) { if ( @$args['switch'] ) { // Do something with this switch } // continue on... } vs. this approach: function do_something( $args = array() ) { if ( ! empty( $args['switch'] ) && $args['switch'] ) { // Do something with this switch } // continue on... } Of course in most use-cases, suppressing errors would not be A Good Thing(tm). However in this use-case where an array is passed with an optional element, it seems to me that it is actually a very good technique but I could be wrong and would like to hear other's opinions on the subject before I make up my mind. I do know that there are alleged performance hits for using the former approach but I'd like to know how they compare with the alternative and if they performance hits really matter in real world scenarios? P.S. I decided to post this because, after debating this offline with Rarst, he asked a more general question here on Programmers but didn't actually give a detailed example of the specific use-case we were debating. And since I'm pretty sure he'll want to use the out-of-context answers on that other question as justification for why the above is "bad" I decided I needed to get opinions on this specific use-case.

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• How to "translate" interdependent object states in code?

  - by Earl Grey

  I have the following problem. My UI interace contains several buttons, labels, and other visual information. I am able to describe every possible workflow scenario that should be be allowed on that UI. That means I can describe it like this - when button A is pressed, the following should follow - In the case of that A button, there are three independent factors that influence the possible result when pushing the A button. The state of the session (blank, single, multi, multi special), the actual work that is being done by the system at the moment of pressing the A button (nothing was happening, work was being done, work was paused) and a separate UI element that has two states (on , off)..This gives me a 3 dimensional cube with 24 possible outcomes. I could write code for this using if cycles, switch cycles etc....but the problem is, I have another 7 buttons on that ui, I can enter this UI from different states..some buttons change the state, some change parameters... To sum up, the combinations are mindbogling and I am not able come up with a methodology that scales and is systematically reliable. I am able to describe EVERY workflow with words, I am sure my description is complete and without logical errors. But I am not able to translate that into code. I was trying to draw flowcharts but it soon became visually too complicated due to too many if "emafors". Can you advice how to proceeed?

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• Mounting an encrypted partion Error

  - by indiajoe

  Using the disk utilities in ubuntu 11.04, i had encrypted a partition with a passphrase. Each time i used to click on the partition to mount, it used to ask me the passphrase and get mounted. All was fine, until i installed the 12.04. After the installation, this encrypted partition, disappeared from the menu. fdisk -l /dev/sda Shows the encrypted partition in the list /dev/sda7 298953648 488392064 94719208+ 7 HPFS/NTFS/exFAT I tried the following commands to mount it. But they all gave following errors $ sudo cryptsetup luksDump /dev/sda7 Device /dev/sda7 is not a valid LUKS device. $ ecryptfs-unwrap-passphrase /dev/sda7 Passphrase: # i entered the correct passphrase here... Error: Unwrapping passphrase failed [-5] Info: Check the system log for more information from libecryptfs $ grep ecryptfs /var/log/syslog Oct 31 22:43:51 benny ecryptfs-unwrap-passphrase: Error attempting to open [/dev/sda7] for reading Nov 1 01:28:02 benny ecryptfs-unwrap-passphrase: Error attempting to open [/dev/sda7] for reading Nov 1 01:29:06 benny ecryptfs-unwrap-passphrase: Error attempting to open [/dev/sda7] for reading I don't understand why I am getting the "Device /dev/sda7 is not a valid LUKS device." Could it be due to some corruption in partition table? Is there any way to recover this encrypted partition? Thanks indiajoe

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• how to install 13.04 on a partitioned hardrive

  - by Denny

  First, not a computer literate person, not even a novice- so please use small words. I recently made the switch to ubuntu, it came preloaded on my new laptop that I order from a big tech dot com site. The version on it is 12.04 (i think) and 64bit. This system has a lot that I like but it is quirky for me to say the least. Apparently I have held broken packages and have no way of knowing how to find them. I discovered this when trying to download (from software center) VLC so that I could watch some movies I had on an external hard-drive. Unmet dependencies error and held broken package errors abound while trying to fix the problem. Ive scoured this site and other and followed almost all the suggestions to a T but still I am unable to fix anything. My computer is partitioned (but I don't even know how to get to the otherside so to speak). I would like to know; can I put the newer 13.04 OS on one side of the partition and then delete the older version on the other side? or, can I install 13.04 over the existing 12.04? What would I need to do this? An obstacle that I have is this, I am currently serving in Afghanistan so going someplace to buy something or running down to a computer store for service support is out of the question. I very much appreciate your help, cause right now this computer is nothing more than a word processor, which would be fine if all i wanted was a word processor. Thanks in advance.

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• PowerBroker (Likewise-Open) + Ubuntu 13.04 -> 13.10 Upgrade

  - by JoBu1324

  I just upgraded Ubuntu from 13.04 to 13.10, and now I can't log into Active Directory; my system is integrated using PowerBroker Identity Services (PBIS), which used to be called Likewise-Open. So far I have identified the following symptoms: I am able to log in with my credentials via ssh. The screen goes black when attempting log into my account via the login screen. I've tried leaving the domain, purging PBIS, and re-installing the latest version of PBIS. I've been trying the troubleshooting section I found here, but I haven't had any success. The relevant portion of the auth.log Oct 22 09:30:26 mypc lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "myusername" Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm:session): session opened for user myusername by (uid=0) Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm:session): session closed for user myusername Oct 22 09:30:30 mypc lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0) Oct 22 09:30:30 mypc systemd-logind[718]: New session c5 of user lightdm. Oct 22 09:30:30 mypc lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :1 Oct 22 09:30:31 mypc dbus[535]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.129" (uid=110 pid=5139 comm="/usr/lib/x86_64-linux-gnu/indicator-keyboard-servi") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.39" (uid=0 pid=2024 comm="/usr/sbin/console-kit-daemon --no-daemon ") My .xsession-errors log Script for ibus started at run_im. Script for auto started at run_im. Script for default started at run_im. /usr/sbin/lightdm-session: 5: exec: init: not found

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• How to get hp printer to select correct trays on samba shared printer

  - by dgermann

  My first post here. Clean install of 12.04.1. Previously 10.04. Have been running a p2035n printer without problem. Now, no matter what paper tray I select it prints to the top "by-pass" feeder--not the lower main tray. And when I select to print to manual feed, it does not wait for me to put in paper (like it used to), but prints immediately. The printer is on a samba share and is physically plugged into a WinXP machine. Its uri is smb:///computername/p2035n. I have tried several of the offered drivers for this hp machine, and even tried generic-laser. Same result on all. Here are some other things I have tried (losing 2-3 hours of my time!): hp-check -t reports “error: User needs to be member of group 'lp' to enable print, scan & fax. ” and “warning: Printer is not HPLIP installed. Printers must use the hp: or hpfax: CUPS backend to function in HPLIP.” needed to download HPLIP 3.12.11 followed http://hplipopensource.com/hplip-web/install/install/index.html sh hplip-3.12.11-run says that before setup logout and then on login run hp-setup hp-setup could not find the printer ran hp-check -t again, found I was not in group lp ran hp-check --fix and it fixed that problem, asks for reboot rebooted after running update manager (new kernel) and hp-check -t shows no errors this time all the tray selections end up on the bypass tray hp-setup still cannot find the printer So is there a way to make this work? Thanks! :- Doug.

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• At which point is a continuous integration server interesting?

  - by Cedric Martin

  I've been reading a bit about CI servers like Jenkins and I'm wondering: at which point is it useful? Because surely for a tiny project where you'd have only 5 classes and 10 unit tests, there's no real need. Here we've got about 1500 unit tests and they pass (on old Core 2 Duo workstations) in about 90 seconds (because they're really testing "units" and hence are very fast). The rule we have is that we cannot commit code when a test fail. So each developers launches all his tests to prevent regression. Obviously, because all the developers always launch all the test we catch errors due to conflicting changes as soon as one developer pulls the change of another (when any). It's still not very clear to me: should I set up a CI server like Jenkins? What would it bring? Is it just useful for the speed gain? (not an issue in our case) Is it useful because old builds can be recreated? (but we can do this to with Mercurial, by checking out old revs) Basically I understand it can be useful but I fail to see exactly why. Any explanation taking into account the points I raised above would be most welcome.

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• Javascript form validation - what's lacking?

  - by box9

  I've tried out two javascript form validation frameworks - jQuery validation, and jQuery Tools validator - and I've found both of them lacking. jQuery validation lacks the clear separation between the concepts of "validating" and "displaying validation errors", and is highly inflexible when it comes to displaying dynamic error messages. jQuery Tools on the other hand lacks decent remote validation support (to check if a username exists for example). Even though jQuery validation supports remote validation, the built-in method requires the server to respond in a particular format. In both cases, any sort of asynchronous validation is a pain, as is defining rules for dependencies between multiple inputs. I'm thinking of rolling my own framework to address these shortcomings, but first I want to ask... have others experienced similar annoyances with javascript validation? What did you end up doing? What are some common validation requirements you've had which really should be catered for? And are there other, much better frameworks out there which I've missed? I'm looking primarily at jQuery-based frameworks, though well-implemented frameworks built on other libraries can still provide some useful ideas.

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• Why does Eclipse keep crashing and dpkg erroring out?

  - by Sanju Sony Kurian

  I AM GETTING THE ERROR E: Sub-process /usr/bin/dpkg returned an error code (1) WHILE I WAS TRYING TO UPGRADE MY PC. i USE ECLIPSE AND IT KEEPS ON CRASHING... pLEASE HELP I ATTACH THE ERROR sanju@sanju-Dell-System-XPS-L502X:~$ upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: aisleriot gir1.2-rb-3.0 gir1.2-totem-1.0 gnome-disk-utility gnome-keyring libgck-1-0 libgcr-3-1 libtotem0 linux-generic linux-headers-generic linux-image-generic rhythmbox rhythmbox-data rhythmbox-mozilla rhythmbox-plugin-cdrecorder rhythmbox-plugin-magnatune rhythmbox-plugin-zeitgeist rhythmbox-plugins seahorse totem totem-common totem-mozilla totem-plugins 0 upgraded, 0 newly installed, 0 to remove and 23 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? Y Setting up grub-pc (1.99-21ubuntu3.1) ... /var/lib/dpkg/info/grub-pc.config: 35: /etc/default/grub: Syntax error: EOF in backquote substitution dpkg: error processing grub-pc (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: grub-pc E: Sub-process /usr/bin/dpkg returned an error code (1)

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• How do I target a specific driver for libata kernel parameter modding?

  - by DanielSmedegaardBuus

  Sorry for the cryptic title. Not sure how to phrase it. This is it in a nutshell: I'm running a 22-disk setup, 19 of those in a ZFS array, 15 of those backed by three port multipliers attached to SATA controllers driven by the sata_sil24 module. When running full speed (SATA2, i.e. 3 Gbps), the operation is pretty quirky (simple read errors will throw an entire PMP into spasms for a long time, sometimes with pretty awful results). Booting with kernel parameter libata.force=1.5G to force SATA controllers into "legacy" speeds completely fixes all issues with the PMPs. Thing is, my ZFS pool is backed by a fast cache SSD on my ICH10R controller. Another SSD on this same controller holds the system. Doing libata.force=1.5G immediately shaves about 100 MB/s off the transfer rate of my SSDs. For the root drive, that's not such a big deal, but for the ZFS cache SSD, it is. It effectively makes the entire zpool slower for sustained transfers than it would've been without the cache drive. Random access and fs tree lookups, of course still benifit. I'm hoping, though, that there's some way to pass the .force=1.5G parameter on to just the three SATA controllers being backed by the sata_sil24 module. But listing the module options for this, no such option exists. Is this possible? And if so, how? Thanks :)

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• How do I install a Wimax usb driver?

  - by kakaz

  I am using wimax usb modem in Ubuntu 9.04 properly. I am familiar with Ubuntu 10.04 and try to install the same deb file to use my wimax USB modem, but it could not install and give me the following error message: $ sudo dpkg -i green-packet-wimax-usb_i386.iso.deb (Reading database ... 206628 files and directories currently installed.) Preparing to replace green-packet-wimax-usb 1.12 (using green-packet-wimax- usb_i386.iso.deb) ... /var/lib/dpkg/info/green-packet-wimax-usb.prerm: 45: /etc/init.d/wimaxd: not found Removing any system startup links for /etc/init.d/wimaxd ... FATAL: Module mt7118_usb_os not found. Unpacking replacement green-packet-wimax-usb ... Setting up green-packet-wimax-usb (1.12) ... FATAL: Error inserting mt7118_usb_glue (/lib/modules/2.6.32-28-generic/kernel/drivers/net/mt7118_usb_glue.ko): Invalid module format dpkg: error processing green-packet-wimax-usb (--install): subprocess installed post-installation script returned error exit status 1 Processing triggers for ureadahead ... Processing triggers for desktop-file-utils ... Processing triggers for python-gmenu ... Rebuilding /usr/share/applications/desktop.en_US.utf8.cache... Processing triggers for libc-bin ... ldconfig deferred processing now taking place Processing triggers for python-support ... Errors were encountered while processing: The error (Line 9) give me some clue that the mt7118_usb_glue.ko kernel object can't insert it. So, I think this may be due to it's kernel dependencies. Can anybody tell me how I can install this kernel object to my new Ubuntu 10.04 kernel?

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• What am I doing wrong in my config for MySql?

  - by Knight Hawk3

  When I load my my.conf with the config at the bottom Mysql fails to start and prints no errors. I am running Arch Linux (Updated) with the latest MySQL (5.5) and the latest nginx (Well latest in the repository, Not sure how to check. Only installed it today) I will give you any info you ask for. Thanks for helping! # The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /var/run/mysqld/mysqld.sock # Here follows entries for some specific programs # The MySQL server [mysqld] port = 3306 socket = /var/run/mysqld/mysqld.sock skip-locking key_buffer = 16K max_allowed_packet = 1M table_cache = 4 sort_buffer_size = 64K read_buffer_size = 256K read_rnd_buffer_size = 256K net_buffer_length = 2K thread_stack = 64K # Don’t listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (using the “enable-named-pipe” option) will render mysqld useless! # #skip-networking server-id = 1 # Uncomment the following if you want to log updates #log-bin=mysql-bin # Uncomment the following if you are NOT using BDB tables skip-bdb # Uncomment the following if you are using InnoDB tables #innodb_data_home_dir = /var/lib/mysql/ #innodb_data_file_path = ibdata1:10M:autoextend #innodb_log_group_home_dir = /var/lib/mysql/ #innodb_log_arch_dir = /var/lib/mysql/ # You can set .._buffer_pool_size up to 50 – 80 % # of RAM but beware of setting memory usage too high #innodb_buffer_pool_size = 16M #innodb_additional_mem_pool_size = 2M # Set .._log_file_size to 25 % of buffer pool size #innodb_log_file_size = 5M #innodb_log_buffer_size = 8M #innodb_flush_log_at_trx_commit = 1 #innodb_lock_wait_timeout = 50 skip-innodb [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [isamchk] key_buffer = 1M sort_buffer_size = 1M [myisamchk] key_buffer = 1M sort_buffer_size = 1M [mysqlhotcopy] interactive-timeout So what is my silly error?

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• How do I install kivy?

  - by aspasia

  I was trying to install Kivy (by following the instructions here). I downloaded and installed all packages where the installation process went through without giving me any errors. However, when later I enter below command; sudo easy_install kivy It looked like it was going to work but it ends with an error by displaying following lines, which I don't comprehend: Detected compiler is unix /tmp/easy_install-BtOA_u/Kivy-1.8.0/kivy/graphics/texture.c:8:22: fatal error: pyconfig.h: No such file or directory #include "pyconfig.h" ^ compilation terminated. error: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1 I saw a similar question asked as; Problem with kivy installation. However, this didn't work for me though the question suggests installing libgles-mesa-dev-lts-raring which I did as below; sudo apt-get install libgles-mesa-dev-lts-raring which then gave below; E: Unable to locate package libgles-mesa-dev-lts-raring (sorry for being so specific and perhaps obvious, but I'm in the early stage of learning my way around linux). This user was running Ubuntu 12.04, and most other questions related to this I've seen came from people with a different release from mine, which has led me to believe that that is the reason why the suggestions to those didn't solve my problem. I'm using Ubuntu 13.10

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• Can't update kernel to 2.6.35.27

  - by Uri Herrera

  When I try to update I get this message, I'm guessing I'm missing something here? Filesystem Type Size Used Avail Use% Mounted on /dev/sdb6 ext4 43G 7.7G 33G 20% / none devtmpfs 1.6G 349k 1.6G 1% /dev none tmpfs 1.6G 5.9M 1.6G 1% /dev/shm none tmpfs 1.6G 218k 1.6G 1% /var/run none tmpfs 1.6G 0 1.6G 0% /var/lock /dev/sdb2 fuseblk 258G 198G 60G 77% /media/Backup /dev/sda1 fuseblk 321G 175G 146G 55% /media/Media /dev/sdb1 ext4 96M 84M 6.7M 93% /boot /dev/sdb7 ext4 175G 81G 86G 49% /home Here's the output: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-image-2.6.35-22-generic 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. 5 not fully installed or removed. After this operation, 107MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 282211 files and directories currently installed.) Removing linux-image-2.6.35-22-generic ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.35-22-generic /boot/vmlinuz-2.6.35-22-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 2.6.35-22-generic /boot/vmlinuz-2.6.35-22-generic /etc/default/grub: 23: Syntax error: newline unexpected run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 2 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.35-22- generic.postrm line 328. dpkg: error processing linux-image-2.6.35-22-generic (--remove): subprocess installed post-removal script returned error exit status 1 Errors were encountered while processing: linux-image-2.6.35-22-generic E: Sub-process /usr/bin/dpkg returned an error code (1)

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