Questions tagged [troubleshooting]

Troubleshooting is a form of problem solving, often applied to repair failed products or processes.

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Enabling multicore causes corrupted files

I am running the latest Manjaro with Cinnamon on a Thinkpad X1 Extreme 20QVCTO1WW. The CPU is an Intel i5-9300H. I currently have multicore disabled in the BIOS but hyperthreading enabled, so lscpu ...
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1answer
14 views

How do I troubleshoot a process that kills GNOME Shell?

Whenever I killall evolution and occasionally when I use the GUI to quit, I am kicked out of my GNOME Shell session and have to log in again. I obviously want to determine the cause but I don't know ...
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71 views

Debian 10 does not start properly

I have Debian 10 installed on a Lenovo W520 laptop. Suddenly Debian does not start properly and I can not access it. It seem that the GUI does not start. In addition I cannot login through a terminal....
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24 views

How to get SD memory card reader to work on Thinkpad X1 20FB?

I have a 4th Gen Thinkpad X1 Carbon (Model 20FB) running Debian 10. There is a memory card slot in the back, but it doesn't seem to work. I'm guessing the drivers are missing. I tried searching online ...
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2answers
289 views

Virtualbox Linux Mint boot black screen with blinking line

I'm trying to install Linux Mint (Cinnamon) in VirtualBox. I have set up the machine and .iso, but when it boots it just shows a black screen with a blinking horizontal line. I had a similar issue ...
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1answer
19 views

Certain applications hanging every few seconds, stops with external monitor

I have an issue on my laptop where the graphical output of certain applications seems to hang every few seconds, but other than graphically hanging the application seems to carry on working, eg, audio ...
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1answer
26 views

Unable to connect to internet on RHEL-7 after botched upgrade

So my situation is, I was previously able to setup network connectivity on my RHEL-7 guest OS (running on host OS Windows 7 using VirtualBox). I messed up an upgrade causing a kernel panic, so I ...
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1answer
56 views

Im having brightness issue and need clarification on a possible fix

Hello i have been using Linux for two years so im still new to the whole community. please forgive me in advanced if this question is stupid and/or in the wrong forum. I have a laptop this ...
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1answer
1k views

Startup Debian 10 error: networking.service loading failed

I've noticed that every time I turn on my PC, there is a line in red. My PC is pretty fast so I don't get to read the problem. I haven't experienced or noticed any problem with my system, but I'm ...
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0answers
41 views

Crash when changing back to tty1

I'm using arch linux with mate-desktop. Whenever I press ctrl+alt+fk, where k=2,...,9 I switch to a tty. However when I want to return I do ctrl+alt+f1which results in a system crash. After that I can'...
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startx blank screen

This happened after I changed GRUB_CMDLINE_LINUX_DEFAULT="quiet" to GRUB_CMDLINE_LINUX_DEFAULT="" and updating the grub config. After rebooting when I do startx I only get a black screen with a mouse. ...
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1answer
55 views

Launching applications from application launcher with “TZ=UTC” prefixed stopped working

I had a launcher for firefox with command TZ=UTC firefox. Suddenly it stopped working, I think after I did pacman -Syu (I only clicked again much later so it could be something else). I am using arch ...
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1answer
74 views

A stop job is running… if I execute dhcpcd and don't kill it on ARCH

I have recently installed arch. Noticed that when shutting it down often a "A stop job is running for session 3 of root.." message appears which takes 1:30 minutes to dissapear. Further investigation ...
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54 views

Can't change resolution or can't detect monitor

The computer is a MSI Gl63 8RD. I installed Debian 9 on it. When I booted it it had a very low resolution. Upon executing xrandr, this outputted: xrandr: Failed to get size of gamma for output ...
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92 views

Slow wired connection on Linux but normal speed on Windows

I installed Ubuntu, Pop_OS, Manjaro, Neon, and Deepin, to my desktop PC (specs at bottom). My internet speed was very slow, basically unusable. Windows gives a normal 15 Mb down and 10 Mb up, but ...
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1answer
91 views

Passing parameters to a BASH function

I'm trying to run FoxitReader from the command line. For opening it, I created this function: foxit(){ /home/quora/opt/foxitsoftware/foxitreader/FoxitReader.sh } export -f foxit And put it ...
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21 views

Cinnamon crashes on shut down or logout

Since upgrading from Debian stable (stretch) to testing (buster), Cinnamon has been crashing when I try to shutdown or logout using the Cinnamon menu. I get the message "Cinnamon has crashed. Would ...
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2answers
107 views

Correcting PATH after dist upgrade?

After a dist upgrade (Debian 9 to Debian 10) some things stopped working. For example, iwconfig, losetup, ifconfig, poweroff, pm-hibernate. These commands work if I type the full path like /sbin/...
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616 views

xrandr doesn't list display port

My laptop (Thinkpad W530) has a VGA and a mini DP port (OR a DP port via docking station). Ubuntu 18.04, xrandr in particular doesn't seem to recognize the DP. For example if I run xrandr gives me ...
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35 views

Getting wifi errors

I've been unable to get WiFi reliably working firstly on Ubuntu and now on Arch. It potentially seems like a hardware issue, but it was flawless on Windows - then I switched to Ubuntu and it would ...
2
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1answer
448 views

youtube-dl, how to write all subs of a youtube playlist to ONE single file?

I'm on Fedora 28 OS and have youtube-dl version 2019.03.18 and I wanted to download all the subs and only the subs of a Crashcourse playlist off of youtube, consisting of 45 videos. I want all the ...
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4answers
815 views

How can I track script which gives me “command not found” right after the login?

When I login, I have these messages: -bash: $'\r' : command not found -bash: $'\r' : command not found -bash: $'\r' : command not found It is quite clear that it is caused by Windows-style line ...
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41 views

Qgis and qtdesigner4: /lib64/libQtWebKit.so.4: undefined symbol

I am trying to launch two programs but there is a problem with /lib64/libQtWebKit.so.4 qgis: qgis: symbol lookup error: /lib64/libQtWebKit.so.4: undefined symbol: ...
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108 views

Installation fails/hangs centos7 entering dracut shell prompt

I am tryung to install centos 7 on desktop. configutation. I5 8 GB 500 gb hdd No graphic card (internal intel graphic) Installation method from USB. Created bootable with yumi multiboot. Below ...
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239 views

Plymouth Boot Screen hang

Centos 7 unable to boot normally hangs on plymouth screen. And gives this. Warning dracut Centos 3.10.0.514.26.2.el7. Kvm was installed. When tried to boot in rescue mode it give this error ...
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VLC submission of played songs to last.fm doesn't seems to be working (audioscrobbler/scrobbling)

VLC is not submitting to Last.fm the played songs. Already checked the Username and Password in the Tools > Preferences (with the All option checked) > Interface > Control interfaces > Audioscrobbler. ...
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1answer
1k views

Booting with `cgroup: cgroup2: unknown option “nsdelegate”` prevents any graphics from appearing

I recently updated my Linux 4.9.0-8 debian 6.3.0. However, when I restarted my machine, ended up having the message in the title. Preventing me from accessing the graphical terminal. I can't access my ...
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180 views

Can't launch GIMP pre-installed via Flatpak on Linux Mint 19, how to debug?

I have quite a fresh installation of Linux Mint 19 Cinnamon with GIMP pre-installed via Flatpak: Basic info $ flatpak info org.gimp.GIMP Ref: app/org.gimp.GIMP/x86_64/stable ID: org.gimp.GIMP Arch: ...
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1answer
390 views

Nothing Is Working: Installing Debian on USB

I need to be able to run a linux distribution on my Windows 10 laptop, so I decided to go with Debian. I want to have a USB flash drive that I own run Debian on my laptop, instead of having my laptop ...
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0answers
88 views

Programs fail to run after moving /home to a different partition on same drive

I am running Arch and was having no difficulties until I moved my home dir to a different partition on the same drive. The sequence of events: Format other partition to ext4; mount it to /mnt Move ...
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1answer
2k views

Intermittent PCIe Bus Errors on startup (Arch Linux)

Since April when I built my computer with Arch Linux OS, I have been getting some errors that seem to point to the ASPM control of some USB 3.1 on my ASUS "ROG STRIX Z370-E GAMING" motherboard. I ...
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1answer
111 views

How do I enable a flowing transition of cursor between Windows and CentOS?

I am currently using: windows 10 home 64 bit and centos 7 It is quite disturbing to my work flow every time I need to right ctrl to get out of the virtual machine's window back to the windows' ...
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1answer
344 views

How to troubleshoot SELinux issues?

I suspect I have a problem in SELinux configuration: my issue goes away after disabling selinux using setenforce 0. I am using the default policy without any modifications. How can I pinpoint the ...
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2answers
1k views

Time drifting after NTP is configured

This is a XenServer 7.1 CU1 host. NTP should behave as in any other Linux distro. We have configured /etc/ntp.conf with following servers (have tried other servers with similar results and these ...
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1answer
292 views

Cannot connect/find any servers (Ubuntu gamepack)

Recently downloaded Ubuntu Gamepack via USB flash drive. All went well as far as I know and except for my internet problems all is well. I do not no why, and would like some assistance in ...
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1answer
350 views

Dual Boot Mint Linux cursor freezes on F541N (aka X541NA)- how to fix?

Bought ASUS VivoBook Max- F541N with pre-installed Win 10 few days ago and dual booted into Mint Linux Sylvia (Cinnamon) 18.3 successfully I see that the keyboard cursor (touchpad) pointer and ...
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2answers
86 views

Can boot Windows but unable to boot any linux

My laptop (Thinkpad W520) suddenly shut down without warning... I tried to reboot, passed grub without issue but, again, shut down during the boot process... I tried recovery mode: same. Live cd and ...
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0answers
112 views

Unable to boot linux ubuntu

Getting lvmetad is not active yet , using direct activation during sysinit /dev/mapper/dhcp--10--47--100--93-vg-root:clean We are able to boot through bootable USB. Using Ubuntu 16.04 version . ...
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0answers
30 views

Spontaneous turning off after reboot from Windows

How should I troubleshoot spontaneous turn off of my notebook running Debian Stretch? What happens: Boot to Windows (dual boot system with windows and Debian on separate drives) Reboot Boot into ...
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0answers
50 views

Same processes, different CPU usage

I have 2 Raspberry PI 3 Model B machines. They have exactly the same hardware and the same OS, the default one (Debian Jessie) provided by Raspberry. I use those machines to run a Ruby On Rails ...
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2answers
812 views

What causes permission to be denied for mounting rootfs, home, messeage queue, kernel file system, during boot?

My Fedora 27 x64 fails to boot after hard reset. It shows: Failed to mount POSIX Message Queue File System, Failed to start Remount and Kernel File Systems, Failed to mount Kernel Debug File System, ...
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0answers
677 views

Working out what is causing my machine to freeze

Background For a few years now, I have been having problems with my Xeon workstations freezing. For many things they have been lightning fast, but sometimes applications or even the desktop just ...
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0answers
58 views

Saving file to network directory fails

I have a text document on a different machine that I open through sftp. However, when I try to save it, I get an error message: Save File Failed! Error: ENOTSUP: operation not supported on socket, ...
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1answer
250 views

Is this error Unix/Linux specific in internet browsers OR Linux VPN related? [closed]

I want to know if the following problem is only in Unix/Linux systems and their internet browsers, since it occurs only with my Linux/Chromebook machines with VPN, but not in Windows machines with VPN....
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1answer
1k views

WD MyCloud NFS Mount to Asus Merlin Router: NFS mount troubleshooting: “no such device”

Goal: mount a UNIX NAS (WD myCloud) to a UNIX router. What has been done (do not assume it is correct): Checked router is running NFS client: ps | grep nfsd 19243 username 1376 R grep nfsd ...
3
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1answer
4k views

system-config-samba crash with could not open configuration file `/etc/libuser.conf'

OS: Linux Mint 18.3 Xfce 64-bit. I am trying to re-install samba, so far I've done: sudo apt-get install samba cifs-utils system-config-samba But when running the configuration GUI: sudo system-...
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1answer
13k views

Troubleshooting advice for: -bash: cannot execute binary file: Exec format error

I have a mining rig and am trying to run a program ./garlicoind but I get this error: -bash: ./garicoind: cannot execute binary file: Exec format error Is this a common problem? What does it ...
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3answers
367 views

Why does a UDP client send 1Gbit speed to 100Mbit server?

I've just found out that in a simple UDP client/server application I wrote on Linux userspace, the UDP client (1 Gbit Ethernet interface) sends the data with 1 Gbit speed to a UDP server which has ...
2
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2answers
598 views

VirtualBox guest Win10 @ Linux host hangs big time at startup, how to troubleshoot?

I have a VirtualBox VM running Windows 10 on a Linux host. It used to work just fine, but this day when I started it it hangs big time. The VM’s window is just a black square, and also the host hangs ...
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1answer
362 views

Can't complete upgrade from fedora 25 to fedora 26

I tried to upgrade from fedora 25 to fedora 26. I followed the following commands, as explained in the journal sudo dnf upgrade --refresh sudo dnf install dnf-plugin-system-upgrade sudo dnf system-...