At Fri, 14 Feb 2014 14:34:07 +0200, Mika Westerberg wrote: > > This reverts commit e18ac62fa4b3f16234bab0d5a6627c57dbae9e7e. > > The referenced commit added HP EliteBook Revolve 810 to the ACPI video > detected blacklist so that only the native Intel backlight interface was > exported. > > However, this turned to be wrong solution after all. The ACPI video > interface works and as long as we only use that there are no problems. So > we can revert this commit and stick to use the backlight interface provided > by the ACPI video driver. > > (Using Intel native interface will not work after resume since the ACPI > video driver will restore it's state which takes control over the native > one. That's a separate thing and should be addressed in the ACPI video > driver, I suppose.) > > References: https://bugzilla.kernel.org/show_bug.cgi?id=70231 > Cc: Aaron Lu <aaron.lu@xxxxxxxxx> > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> > --- > Rafael, > > This turned out to be misunderstanding from my side. I should have > investigated this further before submitting the original patch. Sorry about > that. > > Aaron, > > Thanks for the investigation and pointing me to the right direction (e.g to > use acpi_video0 over the native one). Could you check whether the ACPI video still really works even if you remove the recent acpi_osi blacklist entry below? It might be that BIOS changed its mind to behave more kindly as if handling for Win7. Takashi --- diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 10e4964d051a..64d14406465d 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -322,6 +322,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_VERSION, "2349D15"), }, }, +#if 0 { .callback = dmi_disable_osi_win8, .ident = "HP ProBook 2013 models", @@ -372,6 +373,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 8780w"), }, }, +#endif /* * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. -- 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
