https://bugzilla.kernel.org/show_bug.cgi?id=198907
Bug ID: 198907
Summary: Backlight control missing with /sys/class/backlight/
empty
Product: ACPI
Version: 2.5
Kernel Version: 4.14.0-3-amd64 #1 SMP Debian 4.14.13-1 (2018-01-14)
x86_64 GNU/Linux
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Laptop HP Omen 15-ce012ur
4.14.0-3-amd64 #1 SMP Debian 4.14.13-1 (2018-01-14) x86_64 GNU/Linux.
My video card shows in lspci as:
01:00.0 VGA compatible controller: NVIDIA Corporation GP106M [GeForce GTX 1060]
(rev a1).
Freshly installed Debian. While loading, shows numerous copies of "ACPI Error:
namespace lookup failure. AE_NOT_FOUND".
/sys/class/backlight/ was empty from the start, all ways of changing brightness
do not exist.
That also holds for live-USB with Debian and Ubuntu as well.
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