diff options
| author | Alex Hung <alex.hung@canonical.com> | 2013-05-28 02:05:09 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-01 23:52:28 +0200 |
| commit | fedbe9bc6fd3e14b1ffbb3dac407777ac4a3650c (patch) | |
| tree | 1080bf4644007de8a2a588ac079d299608efde4b /drivers/acpi | |
| parent | af1d486c18bad7820b0ca52b413458914231102c (diff) | |
| download | linux-fedbe9bc6fd3e14b1ffbb3dac407777ac4a3650c.tar.bz2 | |
ACPI / video: ignore BIOS initial backlight value for HP m4
On HP m4 lapops, BIOS reports minimum backlight on boot and
causes backlight to dim completely. This ignores the initial backlight
values and set to max brightness.
References: https://bugs.launchpad.net/bugs/1184501
Cc: All <stable@vger.kernel.org>
Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/video.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 5b32e15a65ce..d0937ab3fb6d 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -464,6 +464,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Pavilion m4", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"), + }, + }, {} }; |