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Tasklist

FS#71050 - External monitor not detected in xrandr

Attached to Project: Arch Linux
Opened by Alex De (ikouchiha47) - Saturday, 29 May 2021, 12:01 GMT
Last edited by Christian Heusel (gromit) - Thursday, 14 September 2023, 19:26 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Jan Alexander Steffens (heftig)
Laurent Carlier (lordheavy)
Architecture x86_64
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: Suddenly no output on external monitor, xrandr doesn't even detect it

Hi, after my laptop had automatically shutdown due to low power I haven't been able to connect to external monitor.

xrandr didn't detect the external monitor. I then live booted from ubuntu as well as void, and in both cases xrandr detected monitor
and the output was there. I tried to debug the issue, but I couldn't.

Linux kernel version was 5.13 . I have attached the dmesg file.


Steps to reproduce:
I will re install arch today to see if the problem persists. I am on void right now.
This task depends upon

Closed by  Christian Heusel (gromit)
Thursday, 14 September 2023, 19:26 GMT
Reason for closing:  Deferred
Additional comments about closing:  Please reopen if the bug persists for now I dont think there is something we can do here
Comment by Alex De (ikouchiha47) - Saturday, 29 May 2021, 12:05 GMT
These are the dmesg files from arch and void
   dmesg_from_arch (86.4 KiB)
   dmesg_from_void (246.3 KiB)
Comment by Alex De (ikouchiha47) - Saturday, 29 May 2021, 12:07 GMT
there is some difference in the hardware recognized at boot
Comment by Andreas Radke (AndyRTR) - Saturday, 29 May 2021, 19:52 GMT
5.12.2 is not the most recent main kernel. You can also try our -lts kernel to see if the main kernel causes the issue.
This could also be an issue with linux-firmware. Do all setups use the same modesetting driver?

Make sure to prove there's indeed a bug in some Arch package and find out what package it is. Otherwise ask at forum/IRC for help.
Comment by archtefo (archtefo) - Saturday, 14 August 2021, 16:33 GMT
Any updates regarding this? I'm having exactly the same issue. I tried booting with linux-lts and linux-lts-header but nothing changes.
Comment by Buggy McBugFace (bugbot) - Tuesday, 08 August 2023, 19:11 GMT
This is an automated comment as this bug is open for more then 2 years. Please reply if you still experience this bug otherwise this issue will be closed after 1 month.

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