https://bugzilla.kernel.org/show_bug.cgi?id=217683
Bug ID: 217683
Summary: Brightness can only be changed once on some HP laptops
Product: ACPI
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Power-Video
Assignee: acpi_power-vi...@kernel-bugs.osdl.org
Reporter: kai.heng.f...@canonical.com
Regression: No
Because ACPI video's child devices aren't put to D0 at boot, and the panel
brightness on those devices requires _PS0 being evaluated to work properly.
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