+Cc: Mario On Thu, Sep 12, 2019 at 10:34 AM Pali Rohár <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 Rohár > pali.rohar@xxxxxxxxx -- With Best Regards, Andy Shevchenko