[Bug 554569] Re: [lucid] Blank screen with KMS on Thinkpad X201 with Arrandale (i915)

[Andrew Bortz]

I also have a Thinkpad X201, with the same problem, with the same dmesg
output as earlier in the thread. In an attempt to isolate the problem, I
tried the following kernel versions:

mainline 2.6.32.9 -- works
mainline 2.6.32.12 -- works
ubuntu 2.6.32-14.20 -- works
ubuntu 2.6.32-15.22 -- works
mainline 2.6.33.1 -- doesn't work
ubuntu 2.6.32-16.25 -- doesn't work
ubuntu 2.6.32-22.33 -- doesn't work
mainline edge -- doesn't work

Turns out -14.20 wasn't the last ubuntu kernel to work. I wasn't able to
get my hands on debs for ubuntu 2.6.32-16.23, but I suspect it wouldn't
work as well. Looking at all the changelogs, all this points to the
update to DRM .33 as the culprit. But that is a big patch, and I'm
totally out of my league. Help?

-- 
[lucid] Blank screen with KMS on Thinkpad X201 with Arrandale (i915)
https://bugs.launchpad.net/bugs/554569
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