Debugging is a methodical process of finding and reducing the number of bugs, or defects, in a computer program

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Tor browser: Vidalia exited abnormally. Exit code: 139 (32 bit)

I downloaded Tor Browser Bundle (tor-browser-gnu-linux-i686-2.3.25-4-dev-en-US) for 32-Bit Linux. Whenever I start to run it on my Ubuntu 12.04 OS it shows me; Vidalia exited abnormally. Exit code: ...
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1answer
189 views

How can I debug my wireless problem?

How can I get started with debugging my wireless problem? How can I tell whether or not Linux has recognized my wireless hardware at all? What are the main programs/daemons associated with wireless ...
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64 views

Why is there missing debugging symbols in ld.so?

I am trying to get a Valgrind log without any missing debugging symbols (i.e. no '???' in any backtrace). Currently, a part of my log is: ==34110== by 0x400F305: call_init.part.0 (dl-init.c:85) ...
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35 views

How to enable crash report

I'm on Kubuntu 12.04.1 and I'm trying out the latest stable version of Rekonq. It crashes on something particular, which I can reproduce. Problem is, I cannot collect the stack trace. I have apport ...
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1answer
369 views

Debug Qt application on ubuntu with root permission using qt creator

It is possible to run my application with root priviliges using sudo, like this: sudo ./MyApp Is it possible to debug my Qt application using root priviliges using QtCreator? How can I do this on ...
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14 views

DMA Tracing - How?

In Linux there is a possibility to trace stuff with /sys/kernel/debug/tracing. Is there a nice way to trace DMA-Transfers with this feature? Can't find a suitable event.
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49 views

How to use dmatest.ko?

I want to initiate a DMA-Transfer for testing. I stumbled accross a dmatest.c in the kernel sources (drivers/dma). I compiled a Kernel with this Module and tried it without any params. sudo modprobe ...
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545 views

advice for debugging apport-gpu-error-intel.py crashes? [closed]

Ever since upgrading from 12.04 to 12.10, after logging in I invariably get a "Ubuntu has detected an error" related to apport-gpu-error-intel.py. Googling around shows that Launchpad has some ...
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1answer
76 views

How do I fix a noisy input device (Internal Mic)? snd_hda_intel - debug included

As the title says, I'm having trouble with a very noisy audio input device - the internal mic or any plugged in mics. So far I've narrowed it down to an problem in ALSA since my debug info is showing ...
5
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1answer
76 views

What are -dbg packages for?

1- What are -dbg packages really for? 2- Is it a good/bad idea to install them for, at least, my preferred applications/packages? 3- Does installing them for my preferred applications/packages helps ...
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Graphic Bugs, Pixel Failures

My problem is that I changed my graphic card (old: hd4570 to new: hd6670), and afer a BIOS update, my new card works trouble-free in Win7 x64. But Ubuntu doesnt start in graphic mode. I get colored ...
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where can i get vmlinux file for running kernel

I'm developing several kernel module. Also i need some profiling to be done. As all my work is kernel modules, rebuilding kernel seems a overkill. I've seen KGDB/KDB and Oprofile is enabled in default ...
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85 views

Debug packages for linux-image-3.2.0-{30,31,32}-generic missing

Why are the debug symbols (to be found under http://ddebs.ubuntu.com/pool/main/l/linux/ ) only availabe for 3.2.0-29-generic and then for the yet unreleased 3.2.0-33-generic? For a project I'd need ...
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67 views

Is there a debug package with sources and a vmlinux image?

I am trying to setup debugging on Ubuntu 12.04. In order to configure this I need a vmlinux image and the sources. Is there a debug package with sources and a vmlinux image for 12.04?
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How to use debug symbols packages?

I am using ubuntu 11.04 and want to use bluez-dbg package to log the debug symbols . How ?
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85 views

Ubuntu server 10.04 running postgres not responding

I am running several ubuntu server machines. Few days ago, I found one machine not responding any more and it can not be accessed. After rebooting the machine, I found the following entries in the ...
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1answer
263 views

Compiling objective c code, how to?

I am trying to compile a program using its source code and I am unable too and the problem seems to happen in the same folder in every ocurrance, and when I check the files, they are all objective c ...
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2answers
462 views

How do I get the bash debugger to work with ddd?

ddd script.bsh does not open the script. It shows an our glass and if I want to close ddd, it says "bash is busy"... I found an old message, but it didn't help. ...
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1answer
306 views

Segment fault error when try to scan host by ettercap

I wanna scan host via ettercap in ubuntu 11.04 but it return following error Ooops ! This shouldn't happen... Segmentation Fault... Please recompile in debug mode, reproduce the bug and send a ...
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2answers
409 views

How to debug Unity? (It works from live CD, but it doesn't work after update…)

I've tested Ubuntu 12.04 from live usb before executing the automagic update (from 11.10 to 12.04) and everything was fine. Then, after updating, I couldn't even get Unity 2D to work. I've installed ...
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1answer
1k views

What does this mean? `LIBGL_DEBUG=verbose glxinfo`?

I type this LIBGL_DEBUG=verbose glxinfo because its supposed to help debug video problems and I get this http://pastebin.ubuntu.com/944871/ What does it all mean? Where can I learn more? What do ...
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2answers
202 views

Is my gedit-latex-plugin working properly?

I have installed gedit-latex-plugin(0.2 rc3) to be used with gedit(2.30.3) in ubuntu 10.04. If I use the command gedit file.tex& in terminal the file is opened and it seems everything works fine ...
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2answers
332 views

Init.d script gets return code 1 when calling itself, how can I get output?

My question is, how can I modify the script so that it will tell me what goes wrong? The scenario is this: I'm trying to get Sonatype Nexus to start as a service in Ubuntu 10.04, and it just will ...
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3answers
551 views

Debugging the execution order of Upstart jobs

I'd like to be able to debug the execution order of the jobs started by Upstart (ideally without injecting dumping code into every job file). How can I do this?
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3answers
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Debugging: Console Output and Upstart Scripts

How do you send the output of an upstart script to a terminal so to find tracebacks in python code? It's taking me for ever to do things without trace-backs that used to take just a second. I'm ...
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455 views

Banshee won't start unless run as sudo or -debug [closed]

I have no idea what is going on, I just made a fresh install of Ubuntu and then after a reboot Banshee won't start. I began to poke around the forums and then tried running it as sudo and with -debug, ...
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1answer
1k views

Banshee freezes [closed]

My Banshee 2.2.0 player freezes everytime soon after I launch it. It just hangs for some seconds and then starts working again, however it's pretty annoying. I tried this solution but it didn't ...
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0answers
72 views

How to use libgtk-3-0-dbg packge [closed]

Since I have my "unity-panel-service" crashing every time I click on the loudspeaker button, I tried to debug the problem with GDB, to find the problem it crashes inside a GTK call. So I installed the ...
2
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1answer
138 views

What's the time unit in /proc/lock_stat output

What is the time unit in the lock stat output from /proc/lock_stat? microsecond or nanosecond? class name con-bounces contentions waittime-min waittime-max waittime-total acq-bounces ...
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1answer
74 views

How do I upgrade all symbol packages?

When submitting Apport reports to Launchpad, I regularly get the error "outdated debug symbol package" from the retracing service. How can I upgrade all debug symbol packages to the latest version? ...
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3answers
1k views

Bash Script: catching errors in a block of statements

I have a large iptables ruleset that I manage with my own bash script. Most of the commands in the script are simple, single-statment iptables commands. I am trying to improve the script by adding ...
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2answers
2k views

how to remove an item from my context menu?

I installed a program called Aptana Studio 3. It's added a menu item to my context menu(if I right click I see an option "Aptana Studio"). How can I manually remove this from my menu? I have ...
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1answer
8k views

after upgrade gdb won't attach to process

I just recently upgraded from 10.04 to 11.04 and gdb won't allow me to attach to processes anymore I get the error Attaching to process 10144 Could not attach to process. If your uid matches ...
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1answer
121 views

ddebs missing for hardy?

I'm trying to debug some crashes on a 8.04 LTS server, but the ddebs repository at http://ddebs.ubuntu.com/dists/ no longer has a directory for hardy... Any ideas where the debug symbols for hardy ...
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2answers
1k views

How do I debug when the system freezes or when it crashes back to login?

I am fairly new to Ubuntu and I was wonder what a good way is to debug when something crashes? For example: I installed 11.04 and the default media player banshee makes my laptop crash after a few ...
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2answers
337 views

Where are debug symbols for backported packages?

Where can I download Linux kernel 2.6.35-25 debug symbols for kernel that comes from lucid-backports repository (I have enabled lucid-backports repository on Ubuntu 10.04 in /etc/apt/sources.list)? ...
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3answers
1k views

What PHP & Xdebug based Editors do people use other than Eclipse, Netbeans (anything java based) or VIM

What editor do people here use in linux? I want Xdebug support but I don't want something java based (eclipse, netbeans, etc) nor do I really want to use VIM. Any native GTK based editor/sdk that ...
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2answers
264 views

How I debug an application that loads at startup / on login?

I am having with the NetworkManger Applet 0.8.1 on Ubuntu 10.10 AMD64. It (or NetworkManager or my wireless driver) seem to crash occasionally, which means I lose all network connectivity. How can I ...
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1answer
602 views

What's the ultimate way to install debug Flash Player in Firefox?

What's the easiest way to get a debug Flash Player (the one you can download from here, though I don't care if it's downloaded automatically) working in Firefox? 64 bit system, default Firefox from ...
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2answers
1k views

How to debug bash script?

Is there any way to debug bash script without using echo and logging? I'm talking about using breakpoints and stuff like that.
8
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2answers
2k views

How to use Moonlight to play videos on rtlmost.hu?

In Hungary, the biggest TV channel is RTL Klub, they has a video archive site. They use Silverlight instead of Flash :( What is annoying, they use the lastest version of Silverlight, about 4.x. But ...
4
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1answer
3k views

Debugging php with gdb

I am attempting to debug a SIGSEGV on PHP on my Ubuntu 9.10. I've installed php5-dbg to have the debug symbols available, however, when I start gdb, it shows the following output: Reading symbols ...
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2answers
2k views

With `quiet` kernel option in my grub entry, can I make the boot messages visible?

I like my machine to boot quietly, if only for aestethic reasons. Sometimes, however, things go wrong, and then I would like to see the boot messages. Can I switch them on during boot, i. e. without ...
182
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6answers
23k views

How do I report a bug?

I found a problem with an application on Ubuntu. How do I best report the issue? What sort of information should I provide?
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2answers
3k views

How can I diagnose/debug “maximum number of clients reached” X errors?

I'm hitting a problem whereby X prevents processes from creating windows, uttering something like the following into ~/.xsession-errors: cannot open display: :0.0 Maximum number of clients reached ...
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1answer
527 views

Debugging python memory leaks [closed]

I'm trying to debug a memory leak in telepathy-butterfly. I tried to use valgrind, but Empathy does not connect to MSN when telepathy-butterfly is run this way. So, I figured out the only option left ...
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2answers
579 views

How to debug Nautilus extension?

I recently installed mpd-gnome which among other things adds a nautilus extension nautilus-mpd.py. This extension does not seem to be working so I decided to run nautilus from the command line to see ...
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3answers
273 views

Accessing a specific URL with firefox 3.6 on Ubuntu 10.4 crashed the OS, how should I debug this?

The system is a spare Dell 2400 I wiped clean, with Ubuntu 10.4 installed. Update manager has everything current, and I haven't been mucking with drivers or tricky system settings. In fact, it has ...
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3answers
389 views

Debugging/monitoring emacs

I'm using GNU Emacs 23.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.0) and start my Emacs session inside GNU screen. Since I upgraded to Ubuntu 10.04 and the version of emacs-snapshot there I ...
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1answer
446 views

Debugging OpenOffice crashes [closed]

This is partly an OpenOffice question and partly a Ubuntu question. I'm running OpenOffice 3.2.0 and Ubuntu 10.04. I get frequent crashes of OO, especially the Calc app, although I get crashes in the ...

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