[Nouveau] [Bug 33887] nouveau causes graphic corruption were you cant do anything

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=33887

--- Comment #18 from Xavier <shiningxc at gmail.com> 2011-02-06 13:36:21 PST ---
(In reply to comment #17)
> I read the mmiotrace.txt file on how to use the kernel functionality.
> Can you tell me what actions exactly would be useful to be traced after the WM
> is started.
> 
> It is written :
> "During tracing you can place comments (markers) into the trace by
> $ echo "X is up" > /sys/kernel/debug/tracing/trace_marker
> This makes it easier to see which part of the (huge) trace corresponds to
> which action. It is recommended to place descriptive markers about what you
> do."
> But what actions exactly to do during the trace process ?
> 
> And :
> "Please, pack into a compressed archive the trace file and a free description
> about what you do during the trace."
> Again what is useful to do ?
> 

AFAIK with nouveau, you get corruption just by starting X.
So I think you just need to start X with the blob, mark X is up in the trace,
and stop.

> Can you also precise to me the format of the name of the archive file.
> "The name of the archive file should contain the PCI id and GPU family, or the
> commercial name of your card."
> Can you give an example of name please ?
> 
> Again :
> "If you are doing a trace for a driver project, e.g. Nouveau, you should also
> do the following before sending your results:
> $ lspci -vvv > lspci.txt
> $ dmesg > dmesg.txt
> $ tar zcf pciid-nick-mmiotrace.tar.gz mydump.txt lspci.txt dmesg.txt
> and then send the .tar.gz file. The trace compresses considerably. Replace
> "pciid" and "nick" with the PCI ID or model name of your piece of hardware
> under investigation and your nickname."
> I would like an example of name of the tarball file.

$ lspci -n -d 10de:
01:00.0 0300: 10de:0407 (rev a1)

-> the pci id of my card is 0407 (10de is vendor id, nvidia)

$ dmesg | grep generation
[11562.063550] [drm] nouveau 0000:01:00.0: Detected an NV50 generation card
(0x084700a2)

-> generation is nv50, codename nv84.

So in my case I would just call it nv84-0407-shining-mmiotrace.tar.gz

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