Arch Linux

celebrimbor

Member

From: Philadelphia, PA

Registered: 2012-07-04

Posts: 56

Choosing SNA acceleration makes brightness keys disfunctional

I have a fully updated arch system installed on my laptop and I have Intel HD Graphics on my Dell Inspiron laptop

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)

Brightness  keys work fine as long as I use UXA acceleration. But changing to SNA acceleration method makes brightness keys disfunctional and power management gets messed. I have tried adding acpi_osi=Linux, acpi_backlight=vendor to the kernel line but it doesn't help.

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hadrons123

Member

From: chennai

Registered: 2011-10-07

Posts: 1,249

Re: Choosing SNA acceleration makes brightness keys disfunctional

There seems to be a bug in the acpi_backlight. File a bug in the kernel bugzilla.
I had my share of the issue and found this out.

https://bugs.freedesktop.org/show_bug.cgi?id=59726#c18

Last edited by hadrons123 (2013-02-22 01:41:32)

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