lkml.org 
[lkml]   [2019]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] platform/x86: dell-laptop: fix phantom kbd backlight on Inspiron 10xx
+Cc: Mario

On Thu, Sep 12, 2019 at 10:34 AM Pali Rohár <pali.rohar@gmail.com> wrote:
>
> 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



--
With Best Regards,
Andy Shevchenko

\
 
 \ /
  Last update: 2019-09-12 15:30    [W:2.996 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site