From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 25717] Radeon: system locks up when sending many vertices.
Date: Mon,  8 Mar 2010 07:28:52 -0800 (PST)
Message-ID: <20100308152852.7E7BC1300AE@annarchy.freedesktop.org>
References: <bug-25717-502@http.bugs.freedesktop.org/>
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http://bugs.freedesktop.org/show_bug.cgi?id=25717


Andy Furniss <lists@andyfurniss.entadsl.com> changed:

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--- Comment #1 from Andy Furniss <lists@andyfurniss.entadsl.com>  2010-03-08 07:28:51 PST ---
(In reply to comment #0)
> Created an attachment (id=32184)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32184) [details]
> program that locks up the system
> 
> Some programs cause a complete system lock-up here, most notably the program
> makehuman, and progs/demos/gltestperf. I suspect this is because the GPU or the
> drm has a problem handling too many vertices. I created a little test program
> that causes a guaranteed system lock-up here.
> 
> This is on a RS780, drm-next and mesa master from today.
> 

I can confirm a gltestperf GPU lockup (monitor off, no SysRq, nothing logged,
reset button won't recover, soft power cycle will)  on my AGP RV670 running
current gits drt,mesa,ddx,xorg. 

It only happens with KMS and is also present with a Jan27th drt kernel I tried.

agpmode=-1 doesn't help - it hangs almost instantly with that, with AGP gart I
can get to benchmark 2 or 3 before it locks.

Running under UMS I get lots of the error -

bo(0x83f97a0, 65536) is mapped (-1) can't valide it.
invalid bo(0x83f97a0) [0xC1CDC000, 0xC1CEC000]

gltestperf will eventually hang, but only needs <ctrl><c> to kill it.


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