Questions tagged [troubleshooting]
Troubleshooting is a form of problem solving, often applied to repair failed products or processes.
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How do I solve this FPS steep frame rate drop when gaming on Linux Mint?
Relevant specs from neofetch:
OS = Linux Mint 21.1 x86_64 /
Host = H310M H 2.0 /
Kernel = 5.15.0-72-generic /
DE = Xfce 4.16 /
CPU = Intel i5-8400 (6) @ 4.000GHz /
GPU = NVIDIA GeForce GTX 1050 Ti /
...
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how to troubleshoot slow usb drive?
TLDR: How do I troubleshoot a slow usb 3.1 device plugged into a laptop.
ISSUE: When I copy (tried GUI and terminal) the first few .iso files copy almost instantly 300mb/s+, but then the 3rd/4th start ...
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Cannot resolve local sub domain on network
I have a raspberry with a dnsmasq server installed (via NetworkManager). I need to be able to resolve *.raspberry.local on my local (private) network.
Here is my config :
In /etc/NetworkManager/...
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18th core on my 13900k is experiencing constant 43% load, how to find the root cause of this behaviour
I am very confused by the load on my i9-13900k. It's always the same 18th core and only that one specific core.
I tried to kill every process running on that said core but the load still persists. Can ...
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How to diagnose a sharp, sudden increase in the frequency with which processes enter the D ("uninterruptible sleep") state
The Linux cluster I work on recently started getting frozen for a few minutes at a time. I've determined that the reason for this behavior is that processes are very frequently landing in the D (&...
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Recover ext4 partition superblock `Free blocks count wrong for group #0`
I have a broken ext4 partition which I want to recover. The problem occurred because of a sudden power loss. The partition is an encrypted luks partition. Opening the luks container works. Say I open ...
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Internal SSD not detected in boot or lsblk
I had a Linux mint system which was working fine until it froze and the "safe restart" of alt+Sysreq+REISUB didn't work, so I had to hard shutdown.
After this the bootable SSD stopped ...
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Discord keeps crashing randomly
Discord on my computer crashes constantly at random intervals. Sometimes I can use it for hours without issues, other times it crashes just 10 minutes after starting. I thought that this had to do ...
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Installing Cube from a .gz file on Linux
I need help installing a .gz file on my computer through Linux. I have run every command up to the ./configure.(install tar.gz or just .gz)
tar xfvz file name.gz
cd file name
sudo apt-get install ...
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Ubuntu Intermittent internet and stable local connection
I have a server running Ubuntu 20.04 LTS. I can connect to it via SSH from any other computer on my network no problem. I can also access the services it has running from my network. Unfortunately its ...
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How can I get more info for what is causing my system to freeze
I've been running the system for a day without problems after removing the Wi-Fi card, I guess I found the problem.
After the recent kernel update, I've been having some problems with random freezes ...
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130
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Troubleshooting Wine-staging and Yabridge VSTs
I'm running two Windows VSTs using Wine-staging 7.15 and Yabridge 4.0.2-1 hosted in Bitwig Studio on Manjaro. The plugins are Arturia Pigments and Novum Granular which both work as expected except for ...
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How to Repair Grub in a Cloud VM (Azure)
I ran into some troubles doing do-release-upgrade and it killed my grub boot.
Because I couldn't find the steps on how to fix this online I'll answer with my own notes below.
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My computer hangs when I "share screens". How do I start diagnosing it?
I've just updated to the latest version (22.04.1 LTS) of Linux through the official updater and my computer is very unstable when sharing screens.
I've been having this issue in OBS, Chrome and ...
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SAR / syssstat issues
I am having issues with SAR not populating daily logs from the 10 minute interval runs it is supposed to be doing. I have the same configuration on multiple servers, and they are running sar just fine....
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Weird dmesg Errors, Perhaps causing the Lag?
I have some lag on my system that acts like a memory leak. Overtime, especially with repetitive suspends, my system can become unusable. Even shutting it down can take 15~20min if i don't hardshut it ...
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How do I interpret and troubleshoot occurances of Linux system errno?
In system administration and software development on Linux, it is very common to come across errors that come from the system C library and/or kernel, which I will call "errnos" (short for &...
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Error mounting: wrong fs type, bad option, bad superblock, missing codepage or helper program, or other error
Several years ago I purchased a Synology NAS. I had it set up like so:
(NAS) ==> (1)(2)(3)(4)(empty)
After a while, I noticed that any drive I plugged into bay number [3] would fail after a couple ...
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Does crashing on an I/O writing stress test definitely indicate SSD hardware failure?
Overview
For around the last two years, my desktop computer has been crashing intermittently due to filesystem errors forcing the SSD to become read-only. It might go well over a week without anything ...
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How do diagnose occasional shell lag?
I am using zsh with a bunch of plugins (Python venv, git status, etc).
Occasionally, when I cd to a directory, it waits for a couple of seconds before letting me type in commands. When I cd to the ...
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network services reachability troubleshooting
I have voyage linux on a system. It is running an apache server and an sshd. For some reason, i cannot connect to those services from another machine. There are no error logs that i have been able to ...
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Stuck in emergency mode after cloning my system with clonezilla
I cloned my installation from a 240GB SATA SSD to a 500GB NVMe SSD using Clonezilla. The cloning was completed successfully, except for a failure with initrd (unfortauntely I don't remember the ...
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QEMU stuck keys
My keyboard locks up sometimes when I press CTRL related keyboard combinations, for example CTRL+C, CTRL+V etc. One behaviour is that the "C" key seems to be stuck so it writes "...
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OpenDNS setup help
Tried to setup Opendns, but this time it did not work (in my previous install, it worked just fine, unfortunately my pc crashed and had to re-install my OS), followed the setup guide, unfortunately ...
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1
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Finding the cause: WiFi almost unusable on up-to-date Debian, works fine on old Ubuntu
WiFi on an up to date Debian 11.2 works very badly compared to an old Ubuntu 18.04 on the same hardware and same testing conditions. I'm wondering what would be a sensible way of isolating the cause?
...
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logrotate not compressing files
I'm having issues with logrotate as it does not compress files.
We migrated from Centos 7 to Alma linux and since it has not worked.
I'm trying to get logrotate to rotate and compress log files from /...
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512
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How to determine why system suspends but fails to resume
How would I go about determining why my Chromebook (Acer CB515-1HT using the SeaBIOS for boot provided by MrChromeBox.) running Linux Mint suspends successfully but does not resume? When it resumes, ...
- 131
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Atomic Simulation Environment - GUI appears on one laptop, but not the other
I'm a student at University using MobaXterm to access a supercomputer cluster, which runs off of a standard UNIX BASH CLI. Within this system, and within the lab I am a member of, there is a piece of ...
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Unable to launch Steam on Nvidia 495 driver, 5.4 kernel, Linux Mint 20.3
After a few weeks of not having time for games, today I am unable to launch Steam.
I do not remember some bigger change in the system = Linux Mint 20 than upgrading my Mint today from version 20.2 to ...
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Ubuntu on Laptop not detecting wifi adapter
The wifi adapter in my laptop is Realtek RTL8852AE. I am currently dual-booting Windows 11 and Ubuntu 20.04.3 LTS. I've gone through multiple options for what it could be, installed rtw89's repository ...
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What keyboard shortcut did I accidentally press at the login screen that killed the window manager?
Mystery time! I'm using a Thinkpad T450s, running Kubuntu 20.04.3 and KDE Plasma 5.18.5. Today I decided to wipe off my keyboard. To do this I locked the screen, and gently wiped the keys from left to ...
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Random log out of tty1 while typing
I experienced a sudden log out from tty1 where I run the i3 window manager.
While typing stuff, the screen went black, and in a matter of seconds I was back to the login screen (I use no login manager)...
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Cheese (Camera) is not working in Ubuntu 20.04 on my Corei7 11th Gen(Lenovo Thinkbook)
My camera was working properly yesterday, but all of sudden it stopped working next day. I can only see the black screen as below:
My system details are:
I've tried all the other solutions like ...
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Colors become distorted randomly in Linux, not in Windows
Currently running Fedora, but my issue is not exclusively pointed to this distribution!
I have been experiencing this issue of my screen colors inverting/distorting from time to time. And this bug is ...
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Replacing a faulty disk in a RAID 5 btrfs filesystem?
I'm running Rockstor with one of my pools using RAID 5 btrfs - which I know is experimental, I don't think that's the issue here. One disk of the four in the pool is faulty, with 20000+ write I/O ...
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2
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Cutting off the value of a variable
I had wrote a simple script with should read a list of URL string from a file into a variable and prepare it for the future processing.
Content of the dl.txt file:
https://some-url.com/site1
https://...
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Is there anything one can do if traceroute shows issues along the path?
Since few days I cannot reach anymore a site: assist.zoho.com (or assist.zoho.eu).
Here the output of traceroute:
$ traceroute -I assist.zoho.com
traceroute to assist.zoho.com (136.143.191.95), 30 ...
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Troubleshooting extreme boot time on Linux
I am not sure if this is the right place to ask such tech support related questions, but this definitely seems to be a Linux issue or at least regarding the way Linux interacts with my hardware.
I ...
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Finding root cause of TigerVNC multi-minute pauses via ComCast; why "* * *"
What are some techniques for tracking down root cause(s) of intermittent, sometimes very long delays in TigerVNC sessions?
Working remotely via SSH using TigerVNC. Most of the time the screen is ...
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Jupyter seems to connect fine, but I cannot access it in a browser
I'm trying to open Jupyter notebook in a browser. Jupyter seems to have connected just fine:
[I 20:38:02.663 NotebookApp] Serving notebooks from local directory: /home/user/.jupyter
[I 20:38:02.663 ...
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Peculiar and inconsistent behaviour of compose-key after reboot. How should I troubleshoot?
On my Linux Mint 19.3 - Cinnamon, I have observed that sometimes the compose-key works, sometimes it doesn't. Especially, it stopped working after reboot.
Investigating it led me to the conclusions ...
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791
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Wireless Adapter Hardware Not Found on PopOS 20.04
My wireless network was working just today. Then I took my laptop to another location to work which was a 5 minute walk, and then the WIFI adapter was completely not working. The computer did not go ...
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E: package net-tools has no installation candidate [closed]
I am unable to apt-get install net-tools; I get the error
E: Package net-tools has no installation candidate.
Unlike the other similarly named questions, I am using Ubuntu 20.04 and I have not been ...
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1
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741
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No Bash Prompt after SSH login to rPI (Pi-Hole)
I have had an rPi serving up pi-hole DNS for some time now. The issue has existed for at this point years. I would like to be able to understand and potentially resolve without rebuild.
After an OS ...
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5
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15k
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Greenbone/GVM (Kali Linux) scan config error message
I use VirtualBox Kali Linux 2020.4. I recently installed Greenbone Vulnerability Assistant. Whenever I click on Scans > Tasks > New Task, the Scan Config drop down menu is not populated. When I ...
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Audio is garbled - alsa-pcm front:2: snd_pcm_status error: Broken Pipe
Running on Fedora 34, all up-to-date. This is a new install as of a couple weeks ago. Computer is relatively new, on a good SSD, plays on Windows fine even with heavy usage, so this shouldn't be a ...
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310
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hardware diagnosis with debian
I have a i7 8550u SOC thin PC that has started acting up lately. It runs debian 10 (buster). buster backports kernel 5.10.0-0.bpo.5-amd64. The SOC is housed in a thin PC aluminium fanless housing. I ...
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Troubleshoot SSH reverse tunnel between server and Raspberry Pi
I have two systems: An Ubuntu 20.04 server on the Internet and a Raspberry Pi 2B (Ubuntu 18.04) in my local LAN (behind a NAT router). I am opening a reverse tunnel from the Raspberry Pi to the server ...
- 185
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874
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Can't update anything on Linux Mint 20.1
Every time I try to install updates using the update manager on Linux Mint 20.1 I get the following message :
E: grub-pc: installed grub-pc package post-installation script subprocess returned error ...
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2
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Identifying physical memory slots from dmesg ECC error outputs
I have a machine with 768 GiB of ECC DDR4 ram. One of the modules is flaky and needs replacing: dmesg fills up with entries like:
[Mar25 08:07] mce: [Hardware Error]: Machine check events logged
[ ...
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