[Nouveau] [Bug 58378] [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58378

--- Comment #21 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(a) Can we see a full boot log (e.g. output of dmesg) with a recent kernel?
Ideally it would include the time that the visual issues happen.

(b) This looks like it could be a fencing issue, i.e. we try to draw to a
texture, but then instead of waiting, we don't wait. There were some fixes that
went into 3.13-rc1, so perhaps trying the latest and greatest (e.g. 3.13-rc3,
or the latest Linus HEAD) would be good to test out.

(c) There are many bisection guides on the internet. You will also need to
figure out how to make the compiled kernel play nice with your distribution.
The basics are simple though:

1. git bisect start v3.7 v3.6 -- drivers/gpu/drm/nouveau
2. build/install/boot/test
3. if it's good, "git bisect good", if it's bad, "git bisect bad"
4. goto 2

At some point running the step 3 command will tell you "first bad commit is
xyz". That's when you're done. I suspect it might be the giant mega "rewrite
nouveau" commit, in which case we're screwed and this will have been a huge
time-waster (apologies in advance if it turns out this way). But it might be
one of the many other commits that went into 3.7, which would be nice and
indicate an area to focus on.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/nouveau/attachments/20131213/41bc4858/attachment.html>