Questions tagged [debugging]

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

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How can I view a core dump on Ubuntu 18.04?

I have a program which is aborting and I want to view a core dump. I am using addresssanitizer which is causing the abort when it hits a heap overflow. I have done the following: sudo sysctl -w ...
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Trying to install KDbg debugger

I'm trying to install KDbg debugger to use while I code in C and have some problems in figuring out what to do. As suggested in this other similar question: How to install software provided in ...
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19.10: `curecoin-qt` wallet installation fails on the last two steps

In order to make the most of the Folding@Home project (https://foldingathome.org/covid19/) and fight COVID-19 from our homelabs — tokenwise — I've tried to install the curecoin-qt wallet (https://...
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FAHClient cannot connect on Ubuntu 19.10

I've been running FAHClient successfully for one day now, and hence been contributing to the protein folding project. ... Well, I was until I recently booted my system. Now, the client won't connect, ...
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What happened to my kubuntu installation

I've installed Kubuntu, I believe 19.10 on a HP EliteDesk desktop computer. It worked fine for a while, until it didn't. Now I plugged in its SSD to another computer and found a total of 18875816 ...
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graphics noisey, trails, slow refresh?

Please help me figure this out. Noisy graphics, like it takes time to refresh, when there is any movement on the screen. It leaves trails of static-like noise during video play (see image), if I ...
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1answer
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PyCharm Debug Tool Window simply desapear

My PyCharm debug tool window isn't available anymore. I was using it without problem yesterday, however after turn the computer on and open the application it has disappeared from the side bar and ...
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Debugger in geany

I have problem with instaling debugger in geany This is my problem: > arwena@arwena-VirtualBox:~/geany-plugins/debugger$ make Making all in > src make[1]: Entering directory > '/home/arwena/...
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514 views

Geany debugger installation

I want to add new plugins for debugging to Geany. But I have the following problem: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could ...
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1answer
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Notifications wrongly positioned in my KDE+i3wm setup

I am observing a weird behavior on my KDE+i3wm setup. The issue The issue is with the positioning of the notifications. Even though I have configured the notifications to appear near the panel. They ...
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1answer
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Kubuntu freezes whenever I boot my laptop on battery. Why?

I have installed Kubuntu(v19.10) and since the first day, I'm facing this really annoying bug which freezes up my laptop(ASUS FX505DT). The issue I face this bug whenever I boot my laptop on ...
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Debug symbols for KMail 5.7.3 on Kubuntu 18.04.03 LTS

In which package can I find the debug symbols for KMail 5.7.3 on Kubuntu 18.04.03 LTS? Apport is not able to find them and apt-get search also does not give the required package.
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Debugging Assembly with DDD

I have a problem when debugging Assembly code with DDD (also tried GDB). When I compile my program and make executable file with gcc -g -o program program.S I need to add -m32 to make 32-bit ...
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Debugging a crash with valgrind

Assume I have a program foo that I run with foo bar. Now, if I run it normally, it works OK. If I try to use: valgrind --tool=massif foo bar It crashes out with repeated: ==10202== Warning: noted ...
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Problem with Cpp Debugger in Visual Studio Code

I can't debug my C++ code with Visual Studio Code. I did all the things about configuring launch.json, but it just runs like when I execute and the next line button is disabled. It looks like the ...
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Shortkey commandos and others functions not working, Ubuntu 18.04.2

I'm using Ubuntu 18.04.2 LTS (Bionic beaver) 64-bit with the Linux kernel 4.15.0-55-generix x86-64 on a Lenovo Thinkpad X1 Carbon 4th gen. When I tried to use my computer today the shortkey ...
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Is there a command to know whether my “/var/lib/dpkg/status” is fine? To be sure that there is nothing wrong in dpkg and its files [duplicate]

I ran different commands. Maybe I have also corrupted many things. But I do not see any sort of error or crashes so far. So my main question is how do I know that my pc is healthy and there is ...
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Manually compile and install debugging symbols for the recoll package?

I've got some crash files for recoll from which I would like to extract a symbolic stack trace. Unfortunately, there are no debug symbols available for this package, so my stack traces are mostly ...
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What does this error mean? -Xmx500m

I have a script.php file that runs every morning. This script consumes a lot and I need to discover what part of the code generates this. I have launched the script and when executing the commented ...
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What does shellcheck warning SC2129 “Consider using { cmd1; cmd2; } >> file instead of individual redirects.” mean?

I have this shellcheck warning I can't figure out: In /mnt/e/bin/iconic line 540: printf "FALSE|" >> "$IconsRaw" # Select field number 1 ^-- SC2129: Consider ...
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How to solve warnings from GDB?

I need help about debugging GIMP 2.10.10 O.S. Ubuntu 18.04.2 LTS GDB Version (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git I get this message from GDB when i try to generate a backtrace inside flatpak ...
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Is there a way to make Libre Office more responsive in order to be able to center text while the window is in half-screen display

So first of all I am using Libre Office with the following settings: Version: 6.0.7.3 Build ID: 1:6.0.7-0ubuntu0.18.04.2 CPU threads:8; OS: Linux 4.18; UI render: default; VCL: gtk3; Locale:...
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Frequent freezes w Ubuntu 18.04

My laptop freezes about every day, and I am using REISUB to recover. I tend to have Firefox open with a few tabs, maybe Youtube for music, Foxit PDF, Libre Office Writer, Spyder for Python, file ...
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353 views

Does systemd try to mount my luks keyfile?

Please help verifying if this is a bug or just misconfiguration on my part. When I try having my LVM setup decrypted on boot, using a keyfile, the system is trying to mount the path to my keyfile, ...
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1answer
147 views

I dont fix this error when make rtl8821ce!

This is error (initialization from incompatible pointer type):
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How to step into using gcc in Ubuntu [duplicate]

I'm using Ubuntu and i'm programming in C language using the gcc compiler. In Visual Studio on Windows I can use step-into in order to see all the variables I have and which values they have. This ...
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How do I figure out which package is causing my black screen issues?

I am getting a black screen on different linux distributions (Ubuntu 18.04, Kubuntu 18.04, Manjaro GNOME 17.1.12) as long as only one monitor is enabled and connected. When 2 monitors are connected ...
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Skype Memory corruption bug

OS: Linux zero 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:39:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux (Ubuntu 18.04 LTS) Version Affected: Skype version 8.27.0.85 Steps to reproduce: 1. Open ...
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Screenshot logs me out

As soon as I press Alt+PrtScn (which is supposed to take a screenshot of a window) instead it logs me out. Any ideas on how to fix this?
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On Ubuntu 18.04, RawTherapee freezing entire computer

I am using Ubuntu 18.04 on a HP elite 7100 microtower, Intel i7 with 8 GB RAM. Works great, except when I use RawTherapee it freezes the entire computer. I usually have Google Chrome streaming music ...
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Dolphin Emulator 5 freezing - Ubuntu 18.04

I installed Dolphin Emulator 5 and loaded a game (New Super Mario Bros). The game starts, I can select the level I want to play, then right about when the game should start Dolphin freezes completely. ...
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1answer
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Lost My Root Filesystem

I have a Dell xps-13 developer edition. It's default is 14.04 but I updated to 16.04 long ago. Let's just say one stupid decision this morning without coffee lead me to improperly fixing an old bug ...
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how to fix bug found on meltdown/spectre?

linux found bug on meltdown and spectre . what i do for fix this problem ? discription in text note in home directory is ; bug: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass ; file name is :...
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1answer
877 views

Ubuntu won't wake up from suspend

When I suspend my Ubuntu (version 18.04), it doesn't wake up by clicking buttons or anything (even though I do hear the computer is on). Only option I have is to power it off and on. My computer info:...
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How do I install the debug symbols for gcov?

Which package has the debug symbols for gcov from the gcc package? I've tried installing gcc-5-dbgsym, but it didn't have the symbols. Not a duplicate of [1]. As I mentioned I've already enabled the ...
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error while loading shared libraries: libncurses.so.6: cannot open shared object file: No such file or directory

error while loading shared libraries: libncurses.so.6: cannot open shared object file: No such file or directory While i tried to debug the project in eclipse, it shows the above error. please guide ...
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783 views

“Error: No space left on device” when booting ubuntu

How would I repair the graphical OS from the terminal tty1? I'm given the error: Error: No space left on device. Even though there is enough space. Detailed description of the system: df -h ...
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How do I figure out which library is causing ldconfig to segfault?

I downloaded the Ubuntu 16.04 distro for NanoPi Neo 2 and found something interesting. Running ldconfig.real -i (ignoring auxiliary cache) ought to rebuild the library cache. Instead, the binary ...
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1answer
443 views

Reference materials on Linux shell error messages

I am new to Linux and although I've been Using Ubuntu for a while I'm still not familiar with the error messages generated by the shell commands. For example, when installing some driver/software or ...
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1answer
180 views

Apt debug-symbols package empty

I am trying to install debug symbols for gcc. Searching around I have: gcc-4.7-dbgsym/xenial,now 4.7.4-3ubuntu12 amd64 [installed] debug symbols for package gcc-4.7 gcc-4.7-multilib-dbgsym/xenial,...
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1answer
1k views

Debugging Ubuntu 17.04 server freeze?

I'm a novice at Ubuntu and my server is occasionally locking up. It's not while I'm doing anything in particular so it's difficult for me to figure know where to start. I'm more familiar with ...
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1answer
2k views

How to view output of /usr/lib/apt/apt.systemd.daily after apt-daily.service is run by systemd?

In /usr/lib/apt/apt.systemd.daily it reads that # APT::Periodic::Verbose "0"; # - Send report mail to root # 0: no report (or null string) # 1: progress ...
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1answer
733 views

VS code Debugger cant the Program C# on Ubuntu OS

I'm new to Visual Studio Code, i installed it on my Ubuntu Machine and installed the debugger. i can run my program normally by using the "donnet run" command. i configured the the debugger by adding ...
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1answer
3k views

How to enable kernel core dumps on Ubuntu?

Is it possible to get a kernel crash dump on ubuntu? If so, how do I enable it? I have a recurring hang, with systemd sleeping uninterruptably, and I want to figure out what it's doing. Pointers to ...
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show what command is used in graphical mode

Is it possible to use some kind of verbose to show on the terminal what commands are executed when using graphical mode? For example: if I click on chrome it must show: google-chrome. My goal is to ...
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898 views

What happened to the qtbase5-dbg package in Zesty?

I am attempting to install the debug symbols for the Qt core library using the following command, which worked perfectly fine in 16.10: sudo apt-get install qtbase5-dbg However, this doesn't work in ...
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installing dtrace on ubuntu with latest kernel

I am on uname -a Linux ubuntu 4.11.0-rc3+ #5 SMP Tue Apr 4 12:05:39 PDT 2017 x86_64 x86_64 x86_64 GNU/Linux When I typed 'dtrace', it asked me to install systemtap. Now I have: systemtap-sdt-dev/...
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Ubuntu takes much time to boot cause of cleaning orphaned inodes

So usually my system boots almost instantly (I have a fast SSD) but for some time now after some freezes that seem to now to have disappeared it used to take like 2 minutes or so maybe more to the ...
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1answer
4k views

Ubuntu 16.04 has experienced an internal error

I will show here what I got with error tracker Error reports sent from this system Occurred Received Problem Type Program 2017-02-21 08:02 2017-02-21 09:02 UTC Crash boinc-client ...
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833 views

Solution for Black Screen after setting the Screen Brightness Cursor to 0

My screen went completely black after I set the screen brightness cursor to 0 (*) Impossible to do anything anymore and rebooting keep a full black screen. I Solved it by rebooting in Kubuntu "rescue"...

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