Marcus Better wrote:
> Update: the on-screen display is now stuck at 42%.
> I am now running kernel 2.6.24-rc4 with xserver-xorg-core
> 2:1.4.1~git20071119-1, xserver-xorg-video-intel 2:2.2.0-1 and
> thinkpad-acpi 0.18-20071203 (from patch):
> thinkpad_acpi: ThinkPad ACPI Extras v0.18-20071203
> thinkpad_acpi:
> thinkpad_acpi: ThinkPad BIOS 7CETC7WW (2.17 ), EC 7CHT21WW-1.09
> thinkpad_acpi: Lenovo ThinkPad R60
> thinkpad_acpi: radio switch found; radios are enabled
> thinkpad_acpi: standard ACPI backlight interface available, not
> loading native one...
> It doesn't matter if I set the brightness_enable=1 option to
> thinkpad-acpi.

Can you try the latest upstream git of the driver ? It contains some
backlight fixes.

Also, there is now 4 strategies to manipulate the backlight: kernel,
native, legacy or combination. The driver selects one by default
depending on the hardware. Which one do you get at startup? (look in the
output of xrandr --prop). Does it help if you change to another one,
with for instance xrandr --output LVDS --set BACKLIGHT_CONTROL legacy ?

Also, if you think the kernel version matters, can you downgrade to
2.6.23 or 2.6.22?


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