Fixed in the upstream 3.5. (Tried on 10.04 with vanilla kernel; installing 3.5-quantal was a bad mistake...)
Upstream bug: https://bugzilla.kernel.org/show_bug.cgi?id=44451
Still requires acpi_backlight=vendor
Also, the fn+left/right (brightness up/down on D270) still don't work.
Probably time to un-triage and get 3.5 kernel working with Ubuntu 10.04...
Fixed in the upstream 3.5. (Tried on 10.04 with vanilla kernel; installing 3.5-quantal was a bad mistake...) /bugzilla. kernel. org/show_ bug.cgi? id=44451 vendor
Upstream bug: https:/
Still requires acpi_backlight=
Also, the fn+left/right (brightness up/down on D270) still don't work.
Probably time to un-triage and get 3.5 kernel working with Ubuntu 10.04...