Regression: Lower resolution modes on eDP are broken

Bug #2036836 reported by Johon Doee
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

With Ubuntu Mantic, Linux 6.5 and Radeon 680M low resolution mode on hiDPI laptop displays is broken. The only resolution I can set is 3840x2400. Setting any lower resolution leads to display corruptions.

So at the moment, only one resolution can be used with hiDPI displays.

A commit to fix the issue has been released for Kernel 6.5.4 [0]. It would probably be a good idea to backport it to the Ubuntu Mantic Kernel since this is a severe regression/bug.

[0] https://gitlab.freedesktop.org/agd5f/linux/-/commit/e939dde8cd60560748fe5f1fe22c77b7cb322721

Thanks!

Johon Doee (jodoee11)
tags: added: mantic
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2036836

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Revision history for this message
Johon Doee (jodoee11) wrote :

Cannot provide logs at the moment, but the bug is confirmed on freedesktop.org so I am going to set it confirmed.

Changed in linux (Ubuntu):
status: Incomplete → Confirmed
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