[Bug 96396] Segfault in Xorg after RADEON(0): Failed to make 28944x66x32bpp GBM bo

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96396

--- Comment #9 from Sebastian Parborg <darkdefende at gmail.com> ---
(In reply to Michel Dänzer from comment #8)
> (In reply to Magnus Holmgren from comment #7)
> > [xcb] Unknown sequence number while processing queue
> > [xcb] Most likely this is a multi-threaded client and XInitThreads has not
> > been called
> 
> This looks like a KSP bug.

I think it's a bug with Unity (the game engine they are using). I have three
other unity games that have the same problem. (Darkwood, Satellite Reign and
wasteland2: directors cut)

However Satellite Reign has a linux readme that states the following:
> try command line option -force-opengl to force compatability with older
> drivers, or -force-glcore for latest.

With -force-opengl, Satellite Reign starts normaly. But with -force-glcore it
exits (crashes ) with the xcb error.

With Satellite Reign there is also a popup window where you can select the new
unity3d opengl core render or the old that they state are for older GPUs and
"safe".

I've had this problem for quite a while now (over half a year with Darkwood as
it were the first one to upgrade to the new unity3d version).

If I read into the Satellite Reign comment, it seems like the new opengl core
render probably works on Nvidia. I don't know if it works on AMDGPU-pro...

I'm using a 290x with the radeon driver from git btw. So I would suspect that
the opengl core render should work on that.

Michel, maybe you can try to contact the unity3d guys and help them fix this
problem? I'm guessing that if a actual developer of the linux drivers would
contact them it would maybe be fixed sooner rather then later.

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