[Bug 66515] mesa/Glamor with glx-tls enabled is causing GPU to hang on VERDE

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Mar 5 22:29:04 PST 2014


--- Comment #38 from Michel Dänzer <michel at daenzer.net> ---
(In reply to comment #34)
> Anyway, I stopped lightdm, and started X manually with both [R600_DEBUG=nohyperz] set and
> not set. Without this env var, the nouveau driver crashes (after playing for
> a while with the combo box). With this env set, it stopped happening.

Weird: AFAICT glamor doesn't use depth/stencil functionality at all. Also,
radeonsi only got HyperZ support last December, but you were talking about
these hangs long before then.

(In reply to comment #35)
> Xorg.0.log for mesa 9.2.5-1.20131220.fc20 compiled without TLS

As you can see, this prevents glamor from loading, which disables all hardware
acceleration in X. You can get the same effect with

 Option "NoAccel"

in xorg.conf.

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