Re: [PATCH] platform/x86: dell-laptop: fix phantom kbd backlight on Inspiron 10xx

[Andy Shevchenko]

+Cc: Mario

On Thu, Sep 12, 2019 at 10:34 AM Pali RohÃr <pali.rohar@xxxxxxxxx> 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@xxxxxxxxxx>
>
> --
> Pali RohÃr
> pali.rohar@xxxxxxxxx



-- 
With Best Regards,
Andy Shevchenko