** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/2009164
Title:
Fix screen that remains blank forever after it gets locked
Status in HWE Next:
New
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.1 source package in Jammy:
Fix Committed
Bug description:
[Impact]
Once screen is locked under gnome-shell, the screen never wakes up and
remains in blank forever.
[Fix]
"drm/i915: Create resized LUTs for ivb+ split gamma mode" makes gamma
LUT operations in atomic context, so userspace can no longer misuse libdrm.
"drm/i915: Rework legacy LUT handling" starts to use the reworked gamma
LUT.
Pull the whole series and series they depends upon to properly support
gamma LUT.
[Test]
The easier way to reproduce the issue is to
1) Login under Wayland
2) Logout and login under X
3) Go back to wayland
4) Super + L to screenlock
With the LUT reworked series applied, screen can always come back
alive.
[Where problems could occur]
Regression can happen on refactoring patches with "no functional change
intended", let alone overhauls like this one.
So only OEM-6.1 and Unstable are targeted to contain the potential
regression.
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