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

[joeyli <jlee@suse.com>]

Hi Artur, 

Sorry for I am late to reply you.

於 三，2011-12-21 於 10:42 +0100，Artur Flinta 提到：
> Hi Joey!
> 
> On Wed, Dec 21, 2011 at 5:55 AM, joeyli <jlee@suse.com> wrote:
> > Could you please help to enable acpi debug log?
> >        acpi.debug_level=0x2 acpi.debug_layer=0xFFFFFFFF
> >
> > Please attached dmesg and messages log that cover system boot and
> > pressed brightness key a couple of times.
> 
> Added debug parameters, restarted, after GNOME loaded pressed dozen of
> times brightness shortcuts... logs in attachment.
> 

Looks like the acpi debug level not enough, please kindly change acpi
debug parameter to:
	acpi.debug_level=0xF acpi.debug_layer=0xFFFFFFFF log_buf_len=5M

And, please remember press brightness function key a couple of times
before you dump the dmesg and messages log.

> > And,
> > Please also monitor does there have any value of gpe was increased when
> > you press brightness keys:
> >
> > watch -n 1 cat /sys/firmware/acpi/interrupts/gpe[012][0123456789ABCDEF]
> >
> > Please tell me which gpe's value increased if you found.
> 
> Unfortunately none of values have changed (almost all stated 0, one 504).
> 

hmm..... that mean the brightness function key does not emit acpi/wmi
event.

Please help to check the raw scan code from the function key:

	+ please add kernel parameter atkbd.softraw=0 to /boot/grub/menu.list
	+ please switch to console 1, then run: 
		showkey -s

Press backlight function key and look at maybe have scan code capture by showkey. 


Thanks a lot!
Joey lee