[ltp] Z61m, ATI Technologies Inc Radeon Mobility X1400, Debian Sid

Alex Deucher linux-thinkpad@linux-thinkpad.org
Tue, 8 Feb 2011 10:36:17 -0500

On Tue, Feb 8, 2011 at 8:45 AM, Henrique de Moraes Holschuh
<hmh@hmh.eng.br> wrote:
> On Tue, 08 Feb 2011, Gijs Hillenius wrote:
>> Debian Sid today is making life hard for my Xorg server.
> You _need_ KMS, which means you're already in deep crap, as that thing
> is anything but complete, performant and stable at this time. =A0 A major
> regression for anyone that had extremely stable and "good enough" Radeon
> support...
> You will have to use either the Debian kernel/kernel sources, or
> upstream (or newer).
> The X1400 is a PCIe device, isn't it? agpmode shouldn't matter.


> FWIW, + Debian Squeeze, KMS enabled, _all power management
> disabled_ is stable on a Radeon X300 (T43). =A0 Enable automatic GPU powe=
> management, and you get unknown NMIs when it switches power management
> profiles (i.e. the driver is causing the GPU to mess the PCIe bus).

These are caused by changing the pcie link size (e.g., 16x -> 1x) to
save power.  I'm not sure how to avoid them.  You can disable the
relevant code in the driver, but the link changes should be safe.


> --
> =A0"One disk to rule them all, One disk to find them. One disk to bring
> =A0them all and in the darkness grind them. In the Land of Redmond
> =A0where the shadows lie." -- The Silicon Valley Tarot
> =A0Henrique Holschuh
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