On 1/26/06, Michael Karcher <[EMAIL PROTECTED]> wrote:
> Hello DRI developers,
>
> on my ThinkPad T20, I experience Lockups with either type of DMA, be it
> Vertex DMA or AGP texture access. With <Option "DmaMode" "None"> and
> <Option "AGPMode" "2"> glxgears runs perfectly, as does glxinfo, whereas
> ppracer locks up the system at start (supposedly because of using AGP
> texturing). If I add <Option "BusType" "PCI">, everything works as
> expected.
>
> I am using:
>   X Window System Version 6.9.0 (Debian 6.9.0.dfsg.1-2 20060106075605 David 
> Nusinow <[EMAIL PROTECTED]>)
>   common-20060124-linux.i386.tar.bz2
>   savage-20060124-linux.i386.tar.bz2
>   kernel 2.6.15-rc4 (is this a problem?)
>
> Thanks for your work,
>  Michael Karcher
>

It's a known problem with savage based thinkpads and AGP.  I was never
able to track it down.  you might try messing with the shadowstatus
option.  I want to say that may be related, but it's been a while
since I looked into it.

Alex


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