[Nouveau] [Bug 71662] [nvd9 regression] 3d application hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71662

--- Comment #3 from Jan Vesely <jano.vesely at gmail.com> ---
(In reply to comment #2)
> A git bisect would be useful. You should be able to just run the bisect
> under drivers/gpu/drm/nouveau, i.e.
> 
> git bisect start v3.12 v3.11 -- drivers/gpu/drm/nouveau

$ git bisect log
# bad: [5e01dc7b26d9f24f39abace5da98ccbd6a5ceb52] Linux 3.12
# good: [6e4664525b1db28f8c4e1130957f70a94c19213e] Linux 3.11
git bisect start 'v3.12' 'v3.11' 'drivers/gpu/drm/nouveau/'
# bad: [bd9c5a2016307164c419c5e24a46921c10e620a0] drm/nouveau: require
contiguous bo for framebuffer
git bisect bad bd9c5a2016307164c419c5e24a46921c10e620a0
# bad: [0d69704ae348c03bc216b01e32a0e9a2372be419] gpu/vga_switcheroo: add
driver control power feature. (v3)
git bisect bad 0d69704ae348c03bc216b01e32a0e9a2372be419
# bad: [baa7094355a10b432bbccacb925da4bdac861c8d] drm: const'ify ioctls table
(v2)
git bisect bad baa7094355a10b432bbccacb925da4bdac861c8d
# good: [72525b3f333de54fa0c42ef87f27861e41478f1e] drm/ttm: convert to unified
vma offset manager
git bisect good 72525b3f333de54fa0c42ef87f27861e41478f1e
# bad: [43387b37fa2d0f368142b8fa8c9440da92e5381b] drm/gem: create
drm_gem_dumb_destroy
git bisect bad 43387b37fa2d0f368142b8fa8c9440da92e5381b
# first bad commit: [43387b37fa2d0f368142b8fa8c9440da92e5381b] drm/gem: create
drm_gem_dumb_destroy


note that the only good commit was a bit weird, plymouth won't run, gnome-shell
segfaults immediatelly, and DRI_PRIME=13d apps showed no output (both glxgears
and oa). However, both were running (displayed fps, ...) and the hang was
always casued by running oa (never glxgears) so I figured the black screen does
not matter.

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