[Bug 90873] Kernel hang, TearFree On, Mate desktop environment

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90873

Michel Dänzer <michel at daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |deathsimple at vodafone.de
          Component|Drivers/Gallium/radeonsi    |DRM/Radeon
            Version|git                         |unspecified
            Product|Mesa                        |DRI
            Summary|GPU hang, TearFree On, Mate |Kernel hang, TearFree On,
                   |desktop environment         |Mate desktop environment
         QA Contact|dri-devel at lists.freedesktop |
                   |.org                        |

--- Comment #5 from Michel Dänzer <michel at daenzer.net> ---
http://lists.freedesktop.org/archives/dri-devel/2015-June/084514.html fixes the
hang for me (not a GPU hang but a kernel hang, because it tries to lock a mutex
that's already locked).


> [  141.232226] radeon 0000:01:00.0: bo ffff8804236d3400 va 0x0000001000
> conflict with (bo ffff88042a018800 0x0000001000 0x0000001563)

These still happen, but at least with GNOME it continues working for me
somehow. I tried various workarounds for this in the Xorg driver, but I haven't
found anything that avoids these. I think the proper solution for these would
be for the kernel driver to track GPU VA ranges per GEM handle instead of per
BO.

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