Re: Savage IX/Thinkpad T20: Lockup with DMA

[Alex D. <ale...@gm...>]

On 1/27/06, Michael Karcher <ka...@ph...> wrote:
> Am Donnerstag, den 26.01.2006, 13:38 -0500 schrieb Alex Deucher:
> > On 1/26/06, Michael Karcher <ka...@ph...> 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, wher=
eas
> > > ppracer locks up the system at start (supposedly because of using AGP
> > > texturing). If I add <Option "BusType" "PCI">, everything works as
> > > expected.
> > 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.
>
> I already use ShadowStatus on, as the machine locked up on around 70% of
> X server start attempts (with DRI on) if I didn't (The lockup was even
> before the video memory is cleared). I didn't explicitly mention it,
> because ShadowStatus on is the default option if DRI is enabled for
> quite some time now.
>
> However, thanks for that hint.

I was going to say try forcing it off (I think the windows driver does
this on thinkpads), but if you get lockups, I guess that's not an
option.

Alex

>
> Regards,
>   Michael Karcher
>
>