This bug was fixed in the package linux - 6.15.0-3.3
---------------
linux (6.15.0-3.3) questing; urgency=medium
* questing/linux: 6.15.0-3.3 -proposed tracker (LP: #2112363)
* Packaging resync (LP: #1786013)
- [Packaging] debian.master/dkms-versions -- update from kernel-versions
(main/d2025.05.26)
- [Packaging] debian.master/dkms-versions -- update from kernel-versions
(main/d2025.06.03)
* Rotate the Canonical Livepatch key (LP: #2111244)
- [config] prepare for Canonical Livepatch key rotation
* Miscellaneous Ubuntu changes
- [packaging] rename to linux
- [Config] Disable CONFIG_OBJTOOL_WERROR for now.
- Update dropped.txt
- [Config] Update toolchain
-- Timo Aaltonen <[email protected]> Wed, 04 Jun 2025
08:38:59 +0300
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.11 in Ubuntu.
https://bugs.launchpad.net/bugs/2097818
Title:
OLED panel screen backlight brightness does not change with brightness
hotkey(F6&F7 Key)
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Invalid
Status in linux-oem-6.11 source package in Noble:
Fix Released
Status in linux source package in Plucky:
Fix Released
Status in linux-oem-6.11 source package in Plucky:
Invalid
Bug description:
[Impact]
In Dell platform OLED machine with eDP 1.5, monitor's brightness won't change
when pressing brightness key F6/F7.
[Fix]
Cherry-pick the following patchset which has already landed in linux-next:
https://patchwork.freedesktop.org/series/143910/#rev3
which contains:
5dfc37a6b77b drm/dp: Add eDP 1.5 bit definition
9ee185564425 drm/dp: Increase eDP display control capability size
9535c6a4c61c drm/i915/backlight: Use proper interface based on eDP version
64481497924d drm/i915/backlight: Check Luminance based brightness control for
VESA
3f8a009a794e drm/i915/backlight: Modify function to get VESA brightness in
Nits
b68074efcfcf drm/i915/backlight: Add function to change brightness in nits
for VESA
8d502933ac20 drm/i915/backlight: Setup nits based luminance via VESA
a5efc8dcfe71 drm/i915/backlight: Enable nits based luminance
===============================================================================
Besides, there will be a prerequisite patch needed in order to clean-apply
the above patchset:
6276706f33cc drm/i915/display: convert dp aux backlight to struct
intel_display
So there will be 9 patches in total.
[Test Plan]
1. Boot up the Ubuntu OEM image
2. Wait until the screen shows the desktop
3. Press brightness keys (F6 or F7) and see if the brightness has changed.
[Where problems could occur]
May cause regression on some monitors which use the old brightness-changed
path (PWM path).
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2097818/+subscriptions
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