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
