[Bug 40221] NI / Cayman: Frequent pixmap corruption on >=3.0 kernels

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40221

--- Comment #22 from Alex Deucher <agd5f at yahoo.com> 2011-10-19 10:12:33 PDT ---
(In reply to comment #21)
> Since right now every on-screen action I do freezes my system for a few
> seconds, I might as well post here some more.
> 
> *Theory.* the freezes in pre-3.0 and the corruption in post-3.0 are actually
> the same bug: some in-memory action takes forever to finish. Before 3.0, the
> driver actually does the _correct_ thing and sits it out.

The delays in pre-3.0 kernels are due to memory pressure and migrating buffers
out of vram since pre-3.0 the driver was not able to use the full amount of
vram on the card due to the lack of blit support.

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