Bug 152091 - ASUS X450LCP brighness hot keys aren't working
Summary: ASUS X450LCP brighness hot keys aren't working
Status: RESOLVED INVALID
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(Other) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: platform_x86_64@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-08-12 02:24 UTC by Marcos Souza
Modified: 2016-08-16 15:57 UTC (History)
1 user (show)

See Also:
Kernel Version: Since 4.3
Subsystem:
Regression: No
Bisected commit-id:

Attachments
DMI info (647 bytes, text/x-log)
2016-08-12 02:24 UTC, Marcos Souza 		Details
dmesg.log (85.63 KB, text/x-log)
2016-08-12 02:29 UTC, Marcos Souza 		Details
Parameters and /sys/class/backlight entries (1.06 KB, text/x-log)
2016-08-12 02:37 UTC, Marcos Souza 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Marcos Souza 2016-08-12 02:24:19 UTC 
Created attachment 228451 [details]
DMI info

After trying to follow instructions from http://hansdegoede.livejournal.com/13889.html, I could check it didn't worked.

The only kernel parameter that made it work was "acpi_osi=".

I tried to try different parameters, but none of them worked. When using "acpi_osi=", /sys/class/backlight had two acpi_video0 entries:
[marcos@xfiles ~]$ ls /sys/class/backlight/
acpi_video0  acpi_video1  intel_backlight

There is something or someplace I should take a look in the source code?

Thanks!
Comment 1 Marcos Souza 2016-08-12 02:29:19 UTC 
Created attachment 228461 [details]
dmesg.log
Comment 2 Marcos Souza 2016-08-12 02:37:22 UTC 
Created attachment 228471 [details]
Parameters and /sys/class/backlight entries
Comment 3 Marcos Souza 2016-08-12 02:48:05 UTC 
Some additional info:

When using "acpi_osi=", evemu-record with Asus WMI hotkeys, showing KEY_BRIGHTNESSUP/DOWN, so, it worked great with this parameter.
Comment 5 Jani Nikula 2016-08-16 11:36:45 UTC 
Please file new drm/i915 bugs at https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel
Comment 6 Marcos Souza 2016-08-16 15:57:15 UTC 
New bug created: https://bugs.freedesktop.org/show_bug.cgi?id=97368
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