Nouveau - Dec 2013 - [Bug 58378] [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version

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

--- Comment #29 from Andreas Loew <awl1 at gmx.net> ---
OK, finally I have some more encouraging news:

It now looks like the issue indeed started much earlier than initially thought,
namely already between the 3.4 and 3.5 kernel series!!!

Results from my testing with stock kernels obtained from kernel.org (I've
never
ever before compiled so many kernels in such a short period of time...):

* 3.4.5 -> NO ISSUE
* 3.4.74 -> NO ISSUE
* 3.5.1 -> ISSUE SEEN
* 3.5.5 -> ISSUE SEEN
* all later versions (3.6 onwards) -> ISSUE SEEN.

So please advise now what next steps I should undertake to track it down more
closely:

What new commits have happened between the 3.4 and 3.5 series, and did one of
them possibly affect so-called "fencing" on NV86/NV50 chips?

(And - in order to learn some more git - how can I find out the associated
commits using git command-line, such that I can produce the respective kernel
tarballs for testing out of git?)

Many thanks in advance for your feedback! :-)

Andreas

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