On Monday, March 04, 2013 12:23:37 PM Gustavo Maciel Dias Vieira wrote: > > On a HP Pavilion dm4 laptop the BIOS sets minimum backlight on boot, > completely dimming the screen. Ignore this initial value for this > machine. > > Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@xxxxxxxxx> > --- > > This is the same situation as with the HP Folio > (http://www.spinics.net/lists/linux-acpi/msg40401.html). > > Without this patch, the only way to get a correct display is with the > video.use_bios_initial_backlight=0 command line switch. With it the > display works out of the box. Applied to linux-pm.git/linux-next. Thanks, Rafael > drivers/acpi/video.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c > index ac9a69c..d7329bc 100644 > --- a/drivers/acpi/video.c > +++ b/drivers/acpi/video.c > @@ -447,6 +447,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { > DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), > }, > }, > + { > + .callback = video_ignore_initial_backlight, > + .ident = "HP Pavilion dm4", > + .matches = { > + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), > + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"), > + }, > + }, > {} > }; > > -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
