Re: [PATCH] platform/x86: dell-laptop: fix phantom kbd backlight on Inspiron 10xx
From: Pali RohÃr
Date: Thu Sep 12 2019 - 03:34:04 EST
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>