[Nouveau] [Bug 90435] [NV46] moving 3D objects drawn static

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90435

--- Comment #11 from Hans de Goede <jwrdegoede at fedoraproject.org> ---
Hi all,

I've been looking into this toay, it seems that with the latest
xf86-video-nouveau + latest mesa (both git master) I can reproduce the problem
and work around it by starting glxgears like this:

"vblank_mode=0 glxgears"

I need this workaround on both mesa-10.0 and mesa-git-master, so it seems that
whatever problem Ilya was original seeing has been fixed in mesa-git-master.

Ilya can you please try mesa-git-master and if that does not work (the vblank
issue may be specific to my card), try it with: "vblank_mode=0 glxgears" ?

Downgrading xf86-video-nouveau to 1.0.10 fixes the vblank issue for me, a git
bisect points to:
http://cgit.freedesktop.org/nouveau/xf86-video-nouveau/commit/?id=f0fa8313714c2a5b16e784b257b5ff79da3a443b

Which is a commit which enables sync-to-vblank by default and as such is not
really useful, and the real problem lies elsewhere.

Suggestions how to further debug the vblank issue are welcome.

Regards,

Hans

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