This bug was fixed in the package xorg-server - 2:21.1.4-2ubuntu1.2
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xorg-server (2:21.1.4-2ubuntu1.2) kinetic; urgency=medium
* re-calculate-the-clock-and-refresh-rate.diff: Fix modes on 2.5k@90Hz
panels. (LP: #1996490)
-- Timo Aaltonen <[email protected]> Fri, 25 Nov 2022 13:59:07 +0200
** Changed in: xorg-server (Ubuntu Kinetic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1996490
Title:
Failed to set resolutions with 2.5k@90Hz panels
Status in HWE Next:
New
Status in X.Org X server:
New
Status in xorg-server package in Ubuntu:
In Progress
Status in xorg-server source package in Jammy:
Fix Released
Status in xorg-server source package in Kinetic:
Fix Released
Status in xorg-server source package in Lunar:
In Progress
Bug description:
[Impact]
Failed to set resolutions with new 2.5k@90Hz panels, the reported resolutions
from xrandr are all invalid and got blank screen.
[Fix]
Below commit re-calculate clock and refresh rate fixes this issue.
https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/993
[Test]
Verified on 2.5k@90Hz panel laptops and my laptop 1920x1080@60Hz
Will be tested in proposed for wider range.
[Where problems could occur]
Not sure if the re-calculated clock and refresh rate works for all different
panels, need to verify it wider in proposed.
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