On Sun, May 29, 2016 at 09:19:58PM +0200, Mark Kettenis wrote: > And I can't reproduce this on my x220. So either this issue depends on > specific BIOS revisions, or the description of how to reproduce the problem > is incomplete.
I've been seeing it on my x201 for a while. Isn't this the same issue as was discussed in the "ACPI thinkpad brightness regression" thread back in Feburary? It seems this was never resolved. http://marc.info/?t=145501244400002&r=1&w=2
