Bug 9939

Created attachment 14783 [details]
dmidecode

Created attachment 14784 [details]
acpidump

Could you please provide dmesg from 2.6.25-rc1?

Build with 5870a8cd23181703cc76f88f630372f8602c7648 or without ?

With it, I want to see error.

Created attachment 14785 [details]
dmesg with 5870a8cd23181703cc76f88f630372f8602c7648

You can see the failing atkbd output late in the dmesg. Thats when I press the keys.

I noticed, that "make install" also copied "acpi_osi=Linux" from another entry in grubs menu.lst . I didn't change it between the runs. It stayed there from another test and doesn't change the situation. I can redo the dmesg without it if needed.
Next attachment is dmesg of boot with reverted patch. So you can diff the two ...

Created attachment 14786 [details]
dmesg without 5870a8cd23181703cc76f88f630372f8602c7648

dmesg from boot without 5870a8cd23181703cc76f88f630372f8602c7648

Created attachment 14787 [details]
dmesg with 5870a8cd23181703cc76f88f630372f8602c7648 and no acpi_osi=Linux

removed the left-over acpi_osi=Linux

I only see one interesting difference:

ACPI: EC: non-query interrupt received, switching to interrupt mode

happens (with reverted) just after 

ACPI: EC: Look up EC in DSDT

whereas it happens later when the commit is included.

This was the intention of the patch -- to complete init of EC as soon as it needed.
ASUS laptops fail if EC is not inited early, but do not provide ECDT. Toshiba breaks if we always init EC early. Yours FSC have some unknown keycode, if EC is not early inited, and still does not provide ECDT.

Could you describe the failure in more detail? Is the keyboard not working? Functional keys?

The keyboard works. The brightness-keys stop working with the atkbd messages.
Sound Function keys work in both setups (!).
Lets make it more detailed:

These function keys are available:

Fn-F1: Wlan/Bluetooth-Switch - On windows: OSD with on/of-switches
                             - On Linux: possibly disables wlan - connection dropped

Fn-F3: Sound mute - works
Fn-F4: Sound decrease - works
Fn-F5: Sound increase - works

Fn-F6: Mouse switch - Seems to be the touchpad 
                             - On Linux: it switches touchpad off, 
                               but not ON on 2nd keypress ! 
Fn-F7: There's a video-camera on the key - might be reserved for webcam / NA
Fn-F8: Brightness decrease  - we are talking about that.
Fn-F9: Brightness increase  - same
Fn-F10:Monitor-Switch : Didn't test this - no effect atm if pressed.
Fn-F12: Sleep - does a S2ram last time i tested it.


Key combinations here: http://support.fujitsu-siemens.com/com/support/linkapplication.html?LNG=EN&ID=3815&Action=Manuals

if you press Fn-F8 and Fn-F9, does atkbd barks about same unknown opcode?

Fn-F6: (touchpad is off and stays off)
atkbd.c: Unknown key pressed (translated set 2, code 0xf1 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e071 <keycode>' to make it known.
atkbd.c: Unknown key released (translated set 2, code 0xf1 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e071 <keycode>' to make it known.

Fn-F8: (Brightness down)
atkbd.c: Unknown key pressed (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.
atkbd.c: Unknown key released (translated set 2, code 0xd9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e059 <keycode>' to make it known.

Fn-F9: (Brightness up)
No atkbd.c - message and no action.

Fn-F10:
atkbd.c: Unknown key pressed (translated set 2, code 0xa9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e029 <keycode>' to make it known.
atkbd.c: Unknown key released (translated set 2, code 0xa9 on isa0060/serio0).
atkbd.c: Use 'setkeycodes e029 <keycode>' to make it known.

Oh ... Fn-F6 alternates between e071/0xf1 and e072/0xf2. But touchpad stays off.

Please check if video module is loaded. If it is loaded, try to remove it to see if brightness keys start to work.

video module was not loaded. No difference if loaded or not.

Please try acpi_osi="!Windows 2006" as kernel parameter. 

Ok, brightness-keys work with acpi_osi="!Windows 2006", atkbd-messages still there.
But touchpad is off ... either by the option or a cold-reset is needed to enable it again (because it was disabled by keypress before).

Nice kpowersave can also dimm now. This didn't work before.

Ok, let's sum this up. 2.6.24 and 2.6.25-rc1 work. Revert of 5870a8 breaks ACPI initialization, so it is not able to e.g. control brightness from userspace.
It is possible to turn off "Vista" functionality by kernel parameter, it is also possible to make use of new key events, by describing them to input layer.
I'm closing the bug as invalid.

Ok - so I should use acpi_osi="!Windows 2006" from now on ? You have a good view now and can close it, but what is the "solution"? Whats meant by "describing them to input layer"?
Its fine for me that it works in some way. 
But other users with such machines could also run in the same problems.

Could you please point me to what can be done e.g. with this keycodes or e.g. the Fn-F6. I'll look over there.

Sidenote: with acpi_osi="!Windows 2006" brightness-keys also work with 2.6.22.17-0.1-default (opensuse). Just kpowersave does only dimm with newer kernels.

FSC uses WMI (MS-private extension to ACPI) in their machines, so you are guaranteed to have something not working under Linux. There is acpi_wmi driver, which just appeared in 2.6.25. It only works for some Acer and HP machines at the moment, but in theory it is possible to extend it to FSC too.
You should either stick with the "!Windows 2006" and let BIOS control brightness, or read for example here: http://ubuntuforums.org/archive/index.php/t-119449.html, 
and export key presses to user space in a hope that some program (kpowersave?) could catch them and change brightness.  

OK ! Fine.

Closing issue.

BIG TNX, Alexey !

Created attachment 14828 [details]
patch vs.2.6.24.2

please try this patch, which should invoke "acpi_osi="!Windows 2006"
automatically for you on this system.

patch in comment #26 shipped in linux-2.6.25-rc1-git4
please re-open this report if it doesn't address the issue.
closed.