Public bug reported:
The brightness controls on my Lenovo ThinkPad x61 (model 7675-CTO)
running Ubuntu 8.10 on amd64 are broken in the latest intrepid update
kernel (2.6.27-11.27). Neither using g-p-m via the volume fn-keys nor
manually manipulating /sys/class/backlight files works.
Brightness controls worked in 2.6.27-9.19, the previous kernel I had
installed.
Booting with `acpi_backlight=vendor' as suggested in lp:311716 results
in video corruption (diagonal black lines across the screen in X) and
still does not fix brightness controls.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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brightness controls on Lenovo Thinkpad x61 broken in linux-image-generic
2.6.27-11.27
https://bugs.launchpad.net/bugs/327661
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