[Bug 78453] [HAWAII] Get acceleration working

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed May 21 01:55:17 PDT 2014


--- Comment #43 from Christian König <deathsimple at vodafone.de> ---
The hang caused by eglinfo is probably just because we try to clear a buffer on
init using hw accel or something like this.

Here are a couple of tips how to further narrow it down:

1. Don't work on the system you are trying to debug. Use another system and
access the box with the hardware over the network or even better with a serial

2. Add radeon.lockup_timeout=0 to the kernel commandline. This will disable
recovery after the first lockup. It doesn't make sense to try to debug all
lockups at the same time, we probably got more than one problem to solve.

3. After the system crashed take a look at the debugfs files under
/sys/kernel/debug/dri/0/, especially radeon_fence_info. If you lockup the GPU
does this always happen at the same command submitted? E.g. if you try twice do
you always get the same fence value? Or is this random?

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