Public bug reported:
Regression in kernel 7.0.0-28 on HP Pavilion Power 15-cb0xx
Hardware:
HP Pavilion Power 15-cb0xx
Intel HD Graphics 630 (i915)
NVIDIA GTX 1050 Mobile
Ubuntu 26.04 LTS
Regression:
Kernel 6.17.0-23: display brightness works correctly and suspend/resume works
correctly.
Kernel 7.0.0-28: brightness slider changes
/sys/class/backlight/intel_backlight/brightness, but the LCD brightness never
changes. After suspend, the system resumes but the internal display remains
black.
Regression confirmed by booting both kernels on the same installation.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2162740
Title:
Laptop won't wake up from sleep and won't change display brigthness
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