brightness doesn't work properly when thinkpad_acpi is compiled as module

[wes]

Binary package hint: linux-source

Same kernel, except compiled with thinkpad_acpi as module or compiled-in. Hardware keys work fine, though.
Brightness applet and gnome-power-manager brightness options do not work when thinkpad_acpi is compiled as a module.
However, all works fine when thinkpad_acpi is compiled into the kernel.

This is on a Thinkpad T40p

Kernel version: 2.6.22-14
Suspend2 patches applied, but patches don't affect thinkpad_acpi files.
Generic kernel's brightness doesn't work properly either, but I have not compiled the generic kernel with thinkpad_acpi built-in. I would assume it's the same.

[Oleksij Rempel (olerem)]

Please start you kernel with thinkpad_acpi compiled as module and post results of falowing commands:

modprobe -c | grep think
lsmod | grep think
ls -l /proc/acpi/ibm/brightness

[wes (ttdlx1989)]

I'm not on the box at the moment, but I can tell you that thinkpad_acpi IS loaded, because all hotkeys work. They don't work if the module isn't loaded, such as when before I had to manually load it after recompiling thinkpad_acpi as a module (I wanted to try out experimental=1)

Brightness hotkeys work as well, after thinkpad_acpi was loaded. But the applet doesn't work, and there's no gnome osd.
Volume works, though, OSD and all. Which is what puzzles me.

[Oleksij Rempel (olerem)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? If so, please reopen the bug. Thanks in advance.