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

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

[Artur Flinta]

Hi!
I have HP Elitebook 8560w with FirePro M5950, Fedora 16, kernel
3.1.1,xorg ati driver 6.14.3 and issues with screen backlight - can't
dimit.I can write to /sys/class/backlight/acpi_video0/brightness
valuesfrom 0 to 20 (as stated in max_brightness), but it have no
effect onthe screen, values in brightness as well as in
actual_brightnessreflects written number.Before system boot, I can
change brightness of the screen, and itpersist in operating system.
Value of the/sys/class/backlight/acpi_video0/brightness indicates
maximumbrightness (20) even if minimal was set before boot. Kernel
radeon driver maintainers said, that backlight is driven by APCI
drivers, so I'm here to ask for help :)
How can I help to debug this issue? I'm able to recompile kernel and
apply patches, as well as do some tests. Unfortunately I'm unable to
write or correct driver code.
RegardsArtur
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Re: Fwd: [Bugreport] Screen backllight issues on FirePro M5950 (HP EliteBook 8560w)

[joeyli]

Hi Artur, 

於 五，2011-12-09 於 22:41 +0800，Li Joey 提到：
> 
> 
> ---------- Forwarded message ----------
> From: Artur Flinta <aflinta@gmail.com>
> Date: 2011/11/24
> Subject: [Bugreport] Screen backllight issues on FirePro M5950 (HP
> EliteBook 8560w)
> To: linux-acpi@vger.kernel.org
> 
> 
> Hi!
> I have HP Elitebook 8560w with FirePro M5950, Fedora 16, kernel
> 3.1.1,xorg ati driver 6.14.3 and issues with screen backlight - can't
> dimit.I can write to /sys/class/backlight/acpi_video0/brightness
> valuesfrom 0 to 20 (as stated in max_brightness), but it have no
> effect onthe screen, values in brightness as well as in
> actual_brightnessreflects written number.Before system boot, I can
> change brightness of the screen, and itpersist in operating system.
> Value of the/sys/class/backlight/acpi_video0/brightness indicates
> maximumbrightness (20) even if minimal was set before boot. Kernel
> radeon driver maintainers said, that backlight is driven by APCI
> drivers, so I'm here to ask for help :)
> How can I help to debug this issue? I'm able to recompile kernel and
> apply patches, as well as do some tests. Unfortunately I'm unable to
> write or correct driver code.
> RegardsArtur
> --
> Każdy problem ma swoje rozwiązanie, zatem
> jeżeli nie ma rozwiązania to nie ma problemu.
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> in
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> 
> 

You can try to put kernel parameter:

        acpi_osi="!Windows 2009"

to /boot/grub/menu.lst, then reboot look at maybe better.

And, 
could you please kindly share DSDT and dmidecode to me?
Plesae login by root then:
        % acpidump > acpidump.dat
        % dmidecode > dmidecode.log


Thanks a lot!
Joey Lee 

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

[joeyli]

於 六，2011-12-10 於 11:54 +0100，Artur Flinta 提到：
> Hi Joey!
> 
> On Fri, Dec 9, 2011 at 3:54 PM, joeyli <jlee@suse.com> wrote:
> >
> > You can try to put kernel parameter:
> >
> >        acpi_osi="!Windows 2009"
> >
> > to /boot/grub/menu.lst, then reboot look at maybe better.
> 
> No change for me :(
> 
> > And,
> > could you please kindly share DSDT and dmidecode to me?
> > Plesae login by root then:
> >        % acpidump > acpidump.dat
> >        % dmidecode > dmidecode.log
> 
> Sure, in attachment.
> 
> Regards
> Artur
> 
> 

Just checked your DSDT, didn't see _BCM implementation on this machines,
and also didn't see useful _Q event function.

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.

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.


Thanks a lot!
Joey Lee

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

[Artur Flinta]

[-- Attachment #1: Type: text/plain, Size: 886 bytes --]

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.

> 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).

Regards
Artur


-- 
Każdy problem ma swoje rozwiązanie, zatem
jeżeli nie ma rozwiązania to nie ma problemu.

[-- Attachment #2: dmesg.txt.gz --]
[-- Type: application/x-gzip, Size: 22458 bytes --]

[-- Attachment #3: messages.txt.gz --]
[-- Type: application/x-gzip, Size: 19709 bytes --]

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

[joeyli]

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

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

[joeyli]

於 五，2012-01-20 於 22:38 +0100，Artur Flinta 提到：
> Hi Joey!
> 
> On Fri, Jan 20, 2012 at 4:35 AM, joeyli <jlee@suse.com> wrote:
> > Sorry for I am late to reply you.
> 
> No problem :)
> 
> > 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.
> 
> Cause the brightness function key does not emit acpi/wmi event I'll
> skip this step.
> 

OK

> > 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.
> 
> Brightness increase: 0xe0 0x54 0xe0 0xd4
> Brightness decrease: 0xe0 0x4c 0xe0 0xcc
> 
> Regards
> Artur
> 

#define KEY_BRIGHTNESSDOWN      224
#define KEY_BRIGHTNESSUP        225

Suggest you can try to run the following command before run X-windows:

setkeycodes e054 224
setkeycodes e04c 225

If it works, then we can add the above rules to udev keymaps.


Thanks a lot!
Joey Lee

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

[joeyli]

於 日，2012-01-22 於 14:17 +0100，Artur Flinta 提到：
> Hi Joey!
> 
> > #define KEY_BRIGHTNESSDOWN      224
> > #define KEY_BRIGHTNESSUP        225
> >
> > Suggest you can try to run the following command before run X-windows:
> >
> > setkeycodes e054 224
> > setkeycodes e04c 225
> 
> I've run above commands (setkeycodes), and started X-window, then
> pressed several times brightness keys... and noticed something like
> this in dmesg:
> 
> [107404.053624] pkexec[11999]: aflinta: Executing command [USER=root]
> [TTY=unknown] [CWD=/home/aflinta]
> [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 5]
> [107405.449578] pkexec[12003]: pam_systemd(polkit-1:session): Failed
> to create session: Invalid argument
> [107405.450971] pkexec[12003]: aflinta: Executing command [USER=root]
> [TTY=unknown] [CWD=/home/aflinta]
> [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 6]
> [107405.923167] pkexec[12011]: pam_systemd(polkit-1:session): Failed
> to create session: Invalid argument
> [107405.924625] pkexec[12011]: aflinta: Executing command [USER=root]
> [TTY=unknown] [CWD=/home/aflinta]
> [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 4]
> [107406.197956] pkexec[12019]: pam_unix(polkit-1:session): session
> opened for user root by (uid=1000)
> [107406.199010] pkexec[12019]: aflinta: Executing command [USER=root]
> [TTY=unknown] [CWD=/home/aflinta]
> [COMMAND=/usr/libexec/gsd-backlight-helper --set-brightness 2]
> 
> But brightness haven't changed. I think that this is quite similar to
> my first tries to directly write brightness value to

Yes, you are right. At least we fix the hotkey event problem.

> /sys/class/backlight/acpi_video0/brightness (as described in my first
> post) - but without any success.
> 

Yes! we still need fix the problem with backlight control. Please kindly
give me the result after add the following debug parameter:
	acpi.debug_level=0xF acpi.debug_layer=0xFFFFFFFF log_buf_len=5M

And, 
Did you try the following kernel parameter?
	acpi_backlight=vendor

Please try it!
There has a write brightness command 0x06 in WHCM method, WHCM call by
WMAA.
I think might need implement 0x06 command support in hp-wmi.c,
currently, I didn't see it.

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

[joeyli]

On Mon, 2012-01-23 at 15:45 +0100, Artur Flinta wrote:
> Hi!
> 
> On Mon, Jan 23, 2012 at 12:55 AM, joeyli <jlee@suse.com> wrote:
> > Yes! we still need fix the problem with backlight control. Please kindly
> > give me the result after add the following debug parameter:
> >        acpi.debug_level=0xF acpi.debug_layer=0xFFFFFFFF log_buf_len=5M
> >
> 
> I did it and log is in attachment.
> 

Thanks, but looks like your kernel didn't enable 
	CONFIG_ACPI_DEBUG=y

So, doesn't show up any acpi debug log in messages.

> > And,
> > Did you try the following kernel parameter?
> >        acpi_backlight=vendor
> 
> Sure, but after applying it, backlight control keys doesn't work
> anymore, there is also no any message in the log.
> 

Does it work set backlight level by sysfs?
	echo 9 > /sys/class/backlight/acpi_video0/brightness

> I've also checked command: watch -n 1 cat
> /sys/firmware/acpi/interrupts/gpe[012][0123456789ABCDEF]
> but nothing changed too.
> 
> Regards
> Artur

I think don't neet test gpe anymore, because we already know function
key emit scancode.


Thanks a lot!
Joey Lee

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

[joeyli]

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

[Artur Flinta]

Hi!

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

How can I help now?
Or I have to just wait for patch? ;)

Regards
Artur

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

[joeyli]

於 四，2012-01-26 於 07:43 +0100，Artur Flinta 提到：
> Hi!
> 
> > I just found the _BCM in your SSDT3 table, I am tracing it:
> 
> How can I help now?
> Or I have to just wait for patch? ;)
> 
> Regards
> Artur
> 

I hope so, will do my best! :-)

Joey Lee

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