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Questions tagged [troubleshooting]

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

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7 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 ...
0
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0answers
18 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
44 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 ...
7
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4answers
598 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 ...
0
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0answers
14 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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0answers
24 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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0answers
33 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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0answers
12 views

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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0answers
48 views

System booting in VGA and giving “A start job is running…” errors [closed]

I have an arch linux system that is not booting properly. It starts in VGA mode with big text, which is unusual. Then, as it boots, it is giving multiple "A start job is runing..." errors. Also, ...
1
vote
1answer
397 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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0answers
98 views

Apache2: avahi_entry_group_add_service_strlst(SomeHostName) failed

OS: Debian 10 Buster, upgraded from Stretch, to this date still in testing phase. I am just checking upon how my Apache2 web server is doing and while it is starting since boot, I see some error ...
0
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1answer
67 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: ...
0
votes
1answer
188 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 ...
1
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0answers
69 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 ...
1
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1answer
442 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 ...
0
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1answer
37 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' ...
1
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1answer
135 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 ...
0
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2answers
390 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 ...
0
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0answers
8 views

need openvpn client configuration suitable for troubleshooting

I'm running an openvpn client and connecting to a commercial VPN provider (PIA). Every so often, that connection stops working. I can resolve the problem by manually restarting my client. However, I ...
0
votes
1answer
117 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 ...
1
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1answer
226 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 ...
1
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2answers
70 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
82 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
27 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
44 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 ...
3
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2answers
449 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, ...
4
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0answers
317 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 ...
0
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0answers
39 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, ...
1
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1answer
175 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....
2
votes
1answer
760 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 ...
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0answers
381 views

Python 3, no internet connection after update

I recently updated my Debian 9.3 and after this Python3 can't install packages any more (nor access the internet through an API). I assume that urllib3 was updated, and does not work well with ...
3
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1answer
2k 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-...
0
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1answer
7k 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 ...
0
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3answers
286 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
420 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 ...
0
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1answer
203 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-...
0
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3answers
600 views

Upgrade from fedora 25 to 27 - Conflict issue

I tried to upgrade from fedora 25 to fedora 27. When running sudo dnf system-upgrade download --releasever=27 --allowerasing I encountered a transaction check error regarding python. The error ...
3
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0answers
3k views

RTNETLINK answers: File exists on Ubuntu Server 16.04

I have a fresh new install of Ubuntu Server 16.04. After installation, network connectivity was fine. I installed QuickBox, it's a seeding/torrent server software (https://quickbox.io). After the ...
3
votes
1answer
3k views

Fedora 27 - Laptop won't suspend when closing lid

I am facing this rather bizarre situation. After shutting down my laptop by pushing the power button for a few seconds and powering it on again the "suspend when lid is closed" option isn't working. ...
3
votes
1answer
915 views

Figure out which process forks too many threads

I have a process in a Linux installation that at some point has some kind of spike and passes the max allowed number of threads/processes allowed by the system. I found this by checking ps -elfT | wc -...
6
votes
2answers
5k views

Chrony 3.1 refuses to sync with ntp server

I have 70 machine with CentOS 7.2 and chrony version 2.1.1 syncing perfect with my NTP server protocol v3. Recently I added 30 machines with CentOS 7.4 and chrony version 3.1, but these 30 machines ...
0
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1answer
149 views

How to troubleshoot a (near total) freeze?

I'm running Gnome on Ubuntu 17.04. I had gnome-terminal in fullscreen, neovim in a tmux session, a background process compiling code, and Chromium running as well, when my system froze up on me. I ...
2
votes
1answer
211 views

Most programs suddenly segfault

I'm having a strange occurrence on my Raspbian Raspberry Pi, as most programs are now segfaulting before they even start: user@raspberrypi:~ $ sudo -s Segmentation fault user@raspberrypi:~ $ ssh -vvv ...
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0answers
128 views

How to find logs about Touchpad malfunction in Debian on Wayland?

I am trying to troubleshoot why my touchpad does not work anymore with Debian on Wayland (after pressing FN9 and FN8), continuing from the thread Why lost communication to Touchpad on Wayland Debian ...
1
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1answer
5k views

How do I view effective dns servers? [duplicate]

How do I list what dns servers are being searched for things that need to do dns searches? It doesn't seem like what I have in resolv.conf is being used, So i want to troubleshoot and step one of ...
2
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0answers
401 views

Cursor moving to the upper right corner

My dad bought a Lenovo Erazer X510 desktop system a little over a year ago. It is Intel based, and has an Nvidia graphics card. Not that it matters because the fault comes even on the integrated Intel....
1
vote
1answer
772 views

External HDD is extremely slow in Debian

Mounting, listing files, copying files is exceptionally slow. It's a new 1TB unit, formatted as ext4. I do not suspect any physical damage. Copying is at 64kB/s. No entry at /etc/fstab. When Nautilus ...
1
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0answers
1k views

Problem with installing Fedora 26 : “Error checking storage configuration” (Using Live USB)

I am on HP desktop with basic config as follow : OS Name Microsoft Windows 10 Pro Version 10.0.10586 Build 10586 Processor Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz, 3300 Mhz, 2 Core(s), 4 ...
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0answers
552 views

Linux Mint starting into Emergency Mode

I run Linux mint of an external hard drive. Today it made I funny noise and when I rebooted it entered emergency mode. I can still use my laptop via: Advanced options for Linux mint 18 Cinnamon 64-...
1
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1answer
239 views

Linux desktop freezes regularly with audio skipping

My desktop freezes randomly at times, and takes no input from either mouse or keyboard. If an audio track is playing (video, .mp3, etc.), the audio skips on the last sound or syllable heard, then goes ...