lkml.org 
[lkml]   [2019]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] platform/x86: dell-laptop: fix phantom kbd backlight on Inspiron 10xx
On Thursday 12 September 2019 01:14:48 Pacien TRAN-GIRARD wrote:
> This patch registers a quirk disabling keyboard backlight support
> for the Dell Inspiron 1012 and 1018.
>
> Those models wrongly report supporting the KBD_LED_OFF_TOKEN and
> KBD_LED_ON_TOKEN SMBIOS tokens, exposing keyboard brightness controls
> through sysfs which freeze the system when used.
>
> The associated SMBIOS calls never return and cause the system to
> hang, notably at boot when systemd-backlight tries to restore
> previous brightness settings.

Hi! This sounds like a firmware bug. Have you already reported it to Dell?

> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=107651
> Signed-off-by: Pacien TRAN-GIRARD <pacien.trangirard@pacien.net>

--
Pali Rohár
pali.rohar@gmail.com

\
 
 \ /
  Last update: 2019-09-12 09:34    [W:0.089 / U:1.524 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site