https://bugzilla.kernel.org/show_bug.cgi?id=75091
Bug ID: 75091
Summary: Backlight is permanently turned off on screen blank
Product: ACPI
Version: 2.5
Kernel Version: linux 3.14.1
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
Assignee: [email protected]
Reporter: [email protected]
Regression: No
When then screen goes blank on my laptop after 10 minutes of inactivity the
backlight is turned off and brightness function keys do not respond.
To turn the backlight on again, I have to write a 1 to
/sys/class/backlight/intel_backlight/bl_power or if the screen blanks again I
have to write a 0 to turn the backlight on.
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