Re: Fwd: [Bugreport] Screen backllight issues on FirePro M5950 (HP EliteBook 8560w)

[joeyli <jlee@suse.com>]

於 二，2012-01-24 於 16:25 +0100，Artur Flinta 提到：
> Hi!
> 
> > Thanks, but looks like your kernel didn't enable
> >        CONFIG_ACPI_DEBUG=y
> >
> > So, doesn't show up any acpi debug log in messages.
> 
> Fixed, now using kernel-debug package ;) Quite huge in attachment.
> 

I just found the _BCM in your SSDT3 table, I am tracing it:

            Method (_BCM, 1, Serialized)
            {
                Store (\_SB.BCM, Arg0)
                Local0
                If (Local0)
                {
                    Store (BRID, Local1)
                    If (LEqual (SBRV (), 0x00))
                    {
                        \_SB.SSMI (0xEA74, 0x04, Local1, 0x00, 0x00)
                    }

                    Signal (\_SB.BEVT)
                }
            }

> > Does it work set backlight level by sysfs?
> >        echo 9 > /sys/class/backlight/acpi_video0/brightness
> 
> if kernel is booted with acpi_backlight=vendor parameter, then there
> are no entries in  /sys/class/backlight directory.
> 

OH! you are right, sorry I forgot it.


Thanks a lot!
Joey Lee

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