Re: nvidia-driver crashing kernel on head

On 07/08/10 14:52, Rene Ladan wrote:
> On 08-07-2010 22:09, Doug Barton wrote:
>> On Thu, 8 Jul 2010, John Baldwin wrote:
>>
>>> These freezes and panics are due to the driver using a spin mutex
>>> instead of a
>>> regular mutex for the per-file descriptor event_mtx.  If you patch the
>>> driver
>>> to change it to be a regular mutex I think that should fix the problems.
>>
>> Can you give an example? :) I don't mind creating a patch for all of
>> them if you can illustrate what needs to be changed.
>>
> See the attached patch

In order to use 195.36.15 it was necessary to use the patch Rene sent,
the suggestion from jhb previously to remove some locks, plus a bit
more. The patch that got it working on HEAD for me (specifically
r209633) is attached. With that patch I could start X, and run it for a
while, but performance was very poor, even in comparison with the stock
nv driver, and it crashed a couple times (although not nearly as bad as
previously).

So based on other suggestions I tried the newest release version at
nvidia, 256.35. Some of the same locking stuff was needed to patch it, a
patch for the port which includes the locking patch is also attached. If
you are running an amd64 system you'll have to type 'make makesum' after
applying this patch to the port. I'm not sure this patch is complete, or
what Alexey might want to do with the update, but it does create an
accurate plist which means you can cleanly deinstall/pkg_delete when
you're done.

With 256.35 performance and stability have both been quite good,
comparable even to before the the drama started. The only concern I have
at this point is that I'm periodically getting a strange sort of "flash"
popping up on my screen that I didn't get while I was running the nv
driver recently. It looks sort of like the default X background (the
tiny gray crosshatch) is popping through for just a split second.


hth,

Doug

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