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

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Is there a gedit plugin that will detect errors in php code?

I dont know if this is even possible inside of gedit, i know there are third party editors that will do this but i like gedit and would like to know if anyone knows of such a plugin because i cant ...
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How to build eglibc in debug mode [duplicate]

I am trying to create a debug version of the eglibc to allow step by step debugging in a program that crashes in the eglibc. I want the created ".so" file to be as close as possible to the eglibc ...
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2answers
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How can I find out what ibus-daemon and ibus-ui-gtk3 are doing?

Occasionally my desktop slows down a lot. The mouse pointer moves slowly or not at all, my fan starts whirring, and the end is generally nigh. If I'm very patient normality usually restores itself, ...
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1answer
380 views

How to install debug symbols for installed packages?

I try to watch how programs work by running them by the 'Qt Creator' debugger. For better orientation I'd like to see also the system (core) utilities fully in the call stack window as I am used from ...
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0answers
302 views

Why does Ubuntu's webkit inspector look (and work) just like Safari?

In older Ubuntu, the python-webkit inspector looked like Chrome, as you can see in these screenshots: http://stackoverflow.com/questions/13132459 (It had some annoying bugs, too.) I see Midori's ...
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Ubuntu 14.04 nautilus/nemo file manager hanging on every action

I cannot use nautilus or nemo because of high loading time on each action, many times the applications simply hang and I've busted my time on trying to fix it with no success whatsoever. Here's how ...
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0answers
138 views

Ubuntu server periodically unreachable

I have an Ubuntu Server 14.04 server running. The server has two NICs and acts as a NAT router, with the help of shorewall. Shorewall also acts as a plain firewall for blocking ports that I don't want ...
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2answers
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how to use the geany debugger?

I am new to debugging and I need to how to use the debugger in geany IDE. Is there any documentation or a video available in the internet related to the geany debugger? I have surfed everywhere but I ...
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1answer
1k views

Debug faulty hardware

My sister has got a laptop that has always crashed on her during Windows times (Blue screen) (hardware is relatively new and up to date). Back then she sent the dump files from Windows to Dell, who ...
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1answer
230 views

Ubuntu 14.04 image preview never loads

After updating to 14.04 my image preview never shows up Is this common to update? Maybe it is related to my image viewer? Can I replace the default one or if its nautilus fault, what replacement ...
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6answers
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Nginx failing to reload - how to track down why?

Hi I've had my Nginx server running great on Ubuntu server 12.04 for a while. I've been gradually bolting on various bits, and got as far as optimising load times on my wordpress page. After making ...
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3answers
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How to change Firefox debugger font size

It's too small to read. Bug report is https://bugzilla.mozilla.org/show_bug.cgi?id=143119 Notice: it's not about Firebug.
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What is the purpose of libstdc++-dbg?

The Synaptics package manager says that: This package contains the shared library of libstdc++ compiled with debugging symbols. But I can successfully print the contents of std members in the ...
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2answers
219 views

Confusing input error

During general use my laptop (Lenovo Thinkpad Edge 15 running Ubuntu 12.10) will suddenly mute its volume and stall for a few seconds, seemingly for no reason. At the same time if I'm in a terminal ...
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1answer
69 views

What is the role of a Bug reporter?

What is the role of a Bug reporter in reporting bugs and after reporting bugs? When and how can he get out of the bug-related problem? Most people get the benefits of the bug report after the bug is ...
2
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1answer
791 views

Can't use RStudio any more after trying to set up an ODBC connection to a postgreSQL database

I tried to Setup an odbc connection from R to my PostgreSQL database located on a server (package RODBC). When trying to connect the connection failed because I entered a wrong Username in the DSN ...
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1answer
158 views

Multiply 2 array index variables shell programming [closed]

How do i multiply 2 array index variables given the following foo=(1 2) bar=(0.1 0.2) foobar=$((foo[1]*price[1])) # this is wrong echo "$foobar" Current output : 0 Correct/Expected output : 0.4
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1answer
756 views

weird shell script error: invalid option return: usage: return [n]

This programme checks if a certain book title exist by matching user input of book title and book author. function removebook_option() { echo -n "Title : " read title_input2 echo -n ...
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1answer
163 views

Where are the missing build files for performing a kernel bisection?

I am attempting my first-ever kernel bisection to try and help debug a regression that occurred somewhere between 13.04 and 13.10. I am trying to follow the instructions listed at ...
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221 views

Itellij debug problem with maven

When I try to make a debug with intellij in a maven project in Ubuntu 13.04 i get this error, I try with another ports, remote debug, and check the host file, have the same result. Tested in a clean ...
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1answer
1k views

Debugging PHP in Ubuntu (Xdebug)

PHP Vim Debugger: Configuring Apache I am trying to install Vdebug to debug PHP in Vim. Unfortunately, when I press F5 this message appears after a few seconds Waiting for a connection (Ctrl-C to ...
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1answer
130 views

How to get the output (stdout/stderr) of a click application?

I have a click application installed on Ubuntu Touch, and I need to be able to read its standard output in order to debug it. Is the output captured somewhere, or is it possible to see it on the ...
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1answer
346 views

How to upgrade or downgrade the Kernel in Ubuntu (to any stable or testing release)

When I report a bug I may be asked to "try out the latest upstream Kernel", how do I do that? I see a lot of version specific answers to this question here on ask ubuntu, what are the general ...
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1answer
501 views

Get Rhythmbox debugging info

I'm having a weird problem with Rhythmbox that no one else seems to have. When I pause on any audio CD, I can't get Rhythmbox to play it again. I've tried various workarounds including trying to play ...
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3answers
1k views

Debugging PHP apps with Kdevelop

I am using kdevelop 4.5.1 and I would like to debug php apps. I made a search and I found this article: http://nikosams.blogspot.com.es/2010/02 ... ugger.html which is from 2010 but I don't know how ...
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520 views

Juju debug-hooks, how to run hook in debug terminal or get more information?

I'm having trouble deploying the Havana Openstack charms on precise for cinder, nova-cloud-controller, and quantum-gateway. I'm using MaaS running Virsh managed KVM machines. I'm getting errors with ...
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92 views

system crash reason

One of our server recently get frequently crash....I am pasting some of the syslog here, anyone familar with system would give me a hint what caused this? Much appreciated. I am using Ubuntu 12.10. ...
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1answer
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GDB crashes with: ImportError: No module named libstdcxx.v6.printers

I have a problem with GDB. Whenever I try to debug any C++ program, just after running it, GDB gives this error: (gdb) run Starting program: /home/errikos/Workspaces/tests/a.out Traceback (most ...
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1answer
494 views

Why debug packages don't include sources?

I was expecting that after installing the package libgtk-3-0-dbg I would get DDD to show the source code when stepping into gtk+, however I had to download the source package myself (from here) and ...
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162 views

Why is the libindicator reporting all scroll event signals as UP?

I am trying to investigate this bug; the gist is, if you have a Unity application indicator, and you scroll over it, the scroll event is always 'up', even if you scroll down. Here is a sample ...
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1answer
611 views

how to get the address with /proc/kallsyms

cat /proc/kallsyms | grep "\ doexecve$" i run this command in ubuntu 13.04 in virtual box in order to get address. However, no result. How to get the address for kprobe debug
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How do I troubleshoot boot problems when stuck at the Ubuntu splash screen?

I was tweaking some settings on my Ubuntu 12.04 install. Specifically I was altering the default color scheme of the terminal, following these instructions Now whenever I boot Ubuntu, I get stuck in ...
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200 views

How to debug executable (using gdb) that reads another file?

I have a small application let's call it program. In general to use this application I need to stream a file into it: ./program < file_with_data.txt How do I debug such program using dbg? I ...
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1answer
685 views

KDbg on Ubuntu 10.04 LTS [closed]

I wanted a good debugger gui for gdb and found that KDbg is the best one. When I tried searching for it in Synaptic Package Manager I could not found it, then after a bit of googling found out that it ...
0
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1answer
163 views

Glade GUI in Python 2.7 crashes

I created a simple program using a glade .xml file and it, whenever I run the program, it crashes! Here's the Python code: #!/usr/bin/env python import pygtk pygtk.require("2.0") import gtk class ...
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1answer
427 views

Is there a virus active in my Ubuntu? [closed]

I m Using Ubuntu 13.04. Whenever I insert any external memory card or pan drive, a new folder Trash is generated there, which uses huge space of it.. The most important thing is that it is not ...
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3answers
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Choosing C++ debugger on linux

I recently changed from Windows where I was using Qt Creator to Ubuntu. The problem is that Qt Creator in Ubuntu can't properly debug due to some problem attaching ptrace to the program which was ...
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1answer
67 views

Graphical Bug: how to debug?

I have been experiencing a strange graphical bug which I'd like to report on Launchpad. The bug occurs randomly when pressing mouse buttons in some applications, like for example when I resize ...
6
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2answers
7k views

Asking all remaining processes to terminate… fail

Ubuntu 12.10 64 bits with Unity. When I restart or shutdown the PC, it takes too long to do it. It shows the line Asking all remaining processes to terminate... [fail] and after Killing all remaining ...
10
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1answer
5k 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 ...
0
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1answer
199 views

Problem with jdb debugger

I am trying to use Ubuntu 12.04 lts on a system76 box. when I try to run the java debugger, jdb, i get a timeout after i attempt to run the application. i have tried several things and I think the ...
3
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1answer
3k views

How can I know the usb port?

I'm working on a project with an ATmega1280 (Atmel) board. I want to take a look at the stack, so I'm trying to do an OCD (On Chip Debugging). In the tutorial is written: Use this AVRDUDE command ...
3
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1answer
519 views

How do I install the necessary debug packages to report tracebacks in Kubuntu?

I've had many a Kubuntu install, but across all of them, I've had this problem. When KDE crashes, I get the "Crash Reporting Assistant" dialog that wants me to install debug symbols to get a full ...
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xubuntu 12.10 how do shortcuts (technically) trigger actions. Trying to debug shortcut randomly stop working

Keyboard shortcuts randomly stops working, it appears to primarily affect shortcuts involving the Alt-key. I have seen this issue in 12.04 as well. I'm now trying to research the issue in more ...
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4answers
8k views

Receiving error while trying to debug in QtProject

I installed the latest version of the QtProject so now I can debug C++ code. While trying to debug for the first time I got this error: ptrace: Operation not permitted. Could not attach to the ...
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2answers
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What does “Gtk-ERROR **: GTK+ 2.x symbols detected.” mean?

When starting gparted, it crashes with the error: Gtk-ERROR **: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported I already opened LP bug #1094354 for this. ...
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1answer
705 views

FlashBuilder 4 Linux — Debugger disconnects after a while

I am running ubuntu 12.04 64Bit, I have installed eclipse via the software center, FlashBuilder for Linux and the flash debugger plugin as decribed here. everything is working fine accept that the ...
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1answer
405 views

How to investigate display lockup after Alt-Tab switching? [closed]

Running Kubuntu 12.10 on a Dell Latitude E6500 running the free NVIDIA driver for my display. If I hit alt-tab to switch between windows too fast the display locks up and the only way I can unlock it ...
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2answers
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Bug 12.10. No reply to the bug report or alternative to submit the report or bug not answered

First, I am new to Ubuntu, and then I was getting a recurring error: window titled "crash report" (it's contents are as below). There is Stop sign being shown at the top next to the battery indicator. ...
6
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1answer
529 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 ...