On Mon, Sep 14, 2020 at 12:34 AM Alex Hung <alex.hung@xxxxxxxxxxxxx> wrote: > > Default backlight interface is AMD's radeon_bl0 which does not work on > this system. As a result, let's for ACPI backlight interface for this > system. > > BugLink: https://bugs.launchpad.net/bugs/1894667 > > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx> > --- > > V2: correct Cc to stable > > drivers/acpi/video_detect.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c > index 2499d7e..05047a3 100644 > --- a/drivers/acpi/video_detect.c > +++ b/drivers/acpi/video_detect.c > @@ -282,6 +282,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = { > DMI_MATCH(DMI_PRODUCT_NAME, "530U4E/540U4E"), > }, > }, > + /* https://bugs.launchpad.net/bugs/1894667 */ > + { > + .callback = video_detect_force_video, > + .ident = "HP 635 Notebook", > + .matches = { > + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), > + DMI_MATCH(DMI_PRODUCT_NAME, "HP 635 Notebook PC"), > + }, > + }, > > /* Non win8 machines which need native backlight nevertheless */ > { > -- Applied as 5.10 material, thanks!
