FS#69159 - [linux] External display issues with 5.10.4

Attached to Project: Arch Linux
Opened by François Guerraz (kubrick) - Thursday, 31 December 2020, 17:11 GMT
Last edited by Andreas Radke (AndyRTR) - Wednesday, 21 April 2021, 11:14 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To No-one
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 1
Private No

Details

Description:
On a dell XPS 3900, with an external display attached via usb-C docking station (Vako) or thunderbolt (Dell TB16), the computer fails to change resolution or screen layout while in gnome.
That is, I can always get to the log-in screen, but if I then log in to an account that has only one display activated in the preferences, the screens remain black and I have to force off the computer. If it's a user account that has both displays enabled, it works fine until I lock the screen or disable one of the monitors.

Reverting to 5.10.3 or 5.9.14 fixes the issue.
This task depends upon

Closed by  Andreas Radke (AndyRTR)
Wednesday, 21 April 2021, 11:14 GMT
Reason for closing:  Fixed
Additional comments about closing:  5.10.4.arch2-1 fixes the issue
Comment by François Guerraz (kubrick) - Thursday, 31 December 2020, 17:12 GMT
Edit: XPS 9300
Comment by Grzegorz (reset) - Friday, 01 January 2021, 10:10 GMT
Revert this commit https://git.archlinux.org/linux.git/commit/?h=v5.10.4-arch1&id=db71bc7ef3edd98299f83c7dba80b2cdba32de23 solves the problem.

https://bugzilla.kernel.org/show_bug.cgi?id=210987
https://bugzilla.kernel.org/show_bug.cgi?id=210983

Comment by Grzegorz (reset) - Friday, 01 January 2021, 10:46 GMT
version 5.10.4.arch2-1 also resolves the problem

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