On Saturday, March 14, 2015 08:46:25 PM Alex Hung wrote:
> Rafael,
>
> Do you mean /sys/class/backlight/intel_backlight? It works but acpi_video fails.
>
> We have some cases that needs working acpi_video interfaces. I'd also
> like to backport to previous kernels that has not use native backlight
If backlight is the only reason, we don't add machines to blacklist.c any
more.
> On Wed, Mar 11, 2015 at 6:20 AM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> > On Tuesday, March 03, 2015 02:39:14 PM Alex Hung wrote:
> >> The brightness hotkeys of HP Pavilion dv6 does not work with Win8 OSI. Due
> >> to insufficient documentation for the driver implementation, blacklist
> >> it as a workaround.
> >
> > I gather that the native backlight interface doesn't work on those systems too,
> > is that correct?
> >
> >> Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
> >> ---
> >> drivers/acpi/blacklist.c | 12 ++++++++++++
> >> 1 file changed, 12 insertions(+)
> >>
> >> diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
> >> index 9b693d5..98aa360 100644
> >> --- a/drivers/acpi/blacklist.c
> >> +++ b/drivers/acpi/blacklist.c
> >> @@ -300,6 +300,18 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
> >> },
> >>
> >> /*
> >> + * The brightness hotkeys do not work on those machines when
> >> + * returning true for _OSI("Windows 2012")
> >> + */
> >> + {
> >> + .callback = dmi_disable_osi_win8,
> >> + .ident = "HP Pavilion dv6",
> >> + .matches = {
> >> + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
> >> + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6 Notebook PC"),
> >> + },
> >> + },
> >> + /*
> >> * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
> >> * Linux ignores it, except for the machines enumerated below.
> >> */
> >>
> >
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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