[Public] > -----Original Message----- > From: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx> > Sent: Wednesday, July 13, 2022 12:08 > To: Hans de Goede <hdegoede@xxxxxxxxxx>; Ben Skeggs > <bskeggs@xxxxxxxxxx>; Karol Herbst <kherbst@xxxxxxxxxx>; Lyude > <lyude@xxxxxxxxxx>; Daniel Dadap <ddadap@xxxxxxxxxx>; Maarten > Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>; Maxime Ripard > <mripard@xxxxxxxxxx>; Thomas Zimmermann <tzimmermann@xxxxxxx>; > Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>; Joonas Lahtinen > <joonas.lahtinen@xxxxxxxxxxxxxxx>; Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>; > Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>; Deucher, Alexander > <Alexander.Deucher@xxxxxxx>; Koenig, Christian > <Christian.Koenig@xxxxxxx>; Pan@xxxxxxxxxxxxxxx; Pan, Xinhui > <Xinhui.Pan@xxxxxxx>; Rafael J . Wysocki <rafael@xxxxxxxxxx>; Mika > Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>; Lukas Wunner > <lukas@xxxxxxxxx>; Mark Gross <markgross@xxxxxxxxxx>; Andy > Shevchenko <andy@xxxxxxxxxx> > Cc: nouveau@xxxxxxxxxxxxxxxxxxxxx; Daniel Vetter <daniel@xxxxxxxx>; David > Airlie <airlied@xxxxxxxx>; intel-gfx <intel-gfx@xxxxxxxxxxxxxxxxxxxxx>; dri- > devel@xxxxxxxxxxxxxxxxxxxxx; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Len Brown > <lenb@xxxxxxxxxx>; linux-acpi@xxxxxxxxxxxxxxx; platform-driver- > x86@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v2 27/29] ACPI: video: Drop Clevo/TUXEDO NL5xRU and > NL5xNU acpi_backlight=native quirks > > Hi, > > On 7/12/22 21:39, Hans de Goede wrote: > > acpi_backlight=native is the default for these, but as the comment > > explains the quirk was still necessary because even briefly registering > > the acpi_video0 backlight; and then unregistering it once the native > > driver showed up, was leading to issues. > > > > After the "ACPI: video: Make backlight class device registration > > a separate step" patch from earlier in this patch-series, we no > > longer briefly register the acpi_video0 backlight on systems where > > the native driver should be used. > > > > So this is no longer an issue an the quirks are no longer needed. > > > > Cc: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx> > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > > Tested and can confirm: The quirks are no longer needed with this Patchset. > > Tested-by: Werner Sembach <wse@xxxxxxxxxxxxxxxxxxx> Probably should include this link tag in this commit too then as it fixes the Tong Fang systems too. Link: https://bugzilla.kernel.org/show_bug.cgi?id=215683 > > Kind Regards, > > Werner Sembach > > > --- > > drivers/acpi/video_detect.c | 75 ------------------------------------- > > 1 file changed, 75 deletions(-) > > > > diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c > > index 2a4d376a703e..4b9395d1bda7 100644 > > --- a/drivers/acpi/video_detect.c > > +++ b/drivers/acpi/video_detect.c > > @@ -599,81 +599,6 @@ static const struct dmi_system_id > video_detect_dmi_table[] = { > > DMI_MATCH(DMI_BOARD_NAME, "N250P"), > > }, > > }, > > - /* > > - * Clevo NL5xRU and NL5xNU/TUXEDO Aura 15 Gen1 and Gen2 have > both a > > - * working native and video interface. However the default detection > > - * mechanism first registers the video interface before unregistering > > - * it again and switching to the native interface during boot. This > > - * results in a dangling SBIOS request for backlight change for some > > - * reason, causing the backlight to switch to ~2% once per boot on > the > > - * first power cord connect or disconnect event. Setting the native > > - * interface explicitly circumvents this buggy behaviour, by avoiding > > - * the unregistering process. > > - */ > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xRU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xRU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, > "SchenkerTechnologiesGmbH"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xRU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "Notebook"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xRU"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xRU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), > > - DMI_MATCH(DMI_BOARD_NAME, "AURA1501"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xRU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), > > - DMI_MATCH(DMI_BOARD_NAME, "EDUBOOK1502"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xNU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "TUXEDO"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xNU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, > "SchenkerTechnologiesGmbH"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), > > - }, > > - }, > > - { > > - .callback = video_detect_force_native, > > - .ident = "Clevo NL5xNU", > > - .matches = { > > - DMI_MATCH(DMI_SYS_VENDOR, "Notebook"), > > - DMI_MATCH(DMI_BOARD_NAME, "NL5xNU"), > > - }, > > - }, > > > > /* > > * Desktops which falsely report a backlight and which our heuristics
