Commit 3db66620 authored by Hans de Goede's avatar Hans de Goede Committed by Rafael J. Wysocki

ACPI: video: Remove acpi_backlight=video quirk for Lenovo ThinkPad W530

Remove the acpi_backlight=video quirk for Lenovo ThinkPad W530.

This was intended to help users of the (unsupported) Nvidia binary driver,
but this has been reported to cause backlight control issues for users
who have the gfx configured in hybrid (dual-GPU) mode, so drop this.

The Nvidia binary driver should call acpi_video_register_backlight()
when necessary and this has been reported to Nvidia.

Until this is fixed Nvidia binary driver users can work around this by
passing "acpi_backlight=video" on the kernel commandline (with the latest
6.1.y or newer stable series, kernels < 6.1.y don't need this).

Fixes: a5b2781d ("ACPI: video: Add acpi_backlight=video quirk for Lenovo ThinkPad W530")
Reported-by: default avatarРусев Путин <rockeraliexpress@gmail.com>
Link: https://lore.kernel.org/linux-acpi/CAK4BXn0ngZRmzx1bodAF8nmYj0PWdUXzPGHofRrsyZj8MBpcVA@mail.gmail.com/
Cc: 6.1+ <stable@vger.kernel.org> # 6.1+
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 0153d8e6
...@@ -293,20 +293,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = { ...@@ -293,20 +293,6 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
}, },
}, },
/*
* Older models with nvidia GPU which need acpi_video backlight
* control and where the old nvidia binary driver series does not
* call acpi_video_register_backlight().
*/
{
.callback = video_detect_force_video,
/* ThinkPad W530 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W530"),
},
},
/* /*
* These models have a working acpi_video backlight control, and using * These models have a working acpi_video backlight control, and using
* native backlight causes a regression where backlight does not work * native backlight causes a regression where backlight does not work
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment