Vladimir Dergachev wrote:
In the past I found useful not to turn drm debugging on, but, rather,
insert printk statements in various place in radeon code. This should
also provide more information about what is actually going on.
I can't make any promises. My partner already thinks I spend too much
time in front of the computer :-) I'll see what I can do, though. Think a
printk statement at the start and end of every function? Have any
This is probably overkill and might not be very useful
Rather try, at first, to just print a printk logging which command is
being executed (r300_cmd.c) - this is not very thorough, but, maybe, there
is a pattern.
suggestions about what files to start with? Is there some consensus that
this is probably a cursor problem now?
It is still possible that a cursor problem is triggering a lockup caused
by something else - like corrupt command sequence (well, not that easy - I
put a rudimentary checker to protect against that, but it could be lack
of extra end3d)
Also, another cause of lockups could be that we need to insert extra NOPs
to have the engine wait a certain time after some operations. I tried
experimenting with this earlier with little luck, but maybe someone else
would be successful.
Lastly, it might be a good idea for someone comfortable with oscilloscope
to try to see what could be extracted from power supply lines and such -
kinda like using an encephalogram - there could be indications that
something is wrong before the trigger.
best
Vladimir Dergachev
Adam
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