[ltp] Older radeon under ubuntu 10.04

Alex Deucher linux-thinkpad@linux-thinkpad.org
Mon, 24 May 2010 12:28:05 -0400

On Mon, May 24, 2010 at 11:57 AM, Laurent <pumpkin@gmx.de> wrote:
> Hi,
>> Don't use rovclock. =A0It doesn't take into account the post dividers so
>> the clocks it reports and sets are wrong depending on the pll dividers
>> your system is currently using.
> OK. I didn't trust the values anyway. The M7 simply cannot go that
> fast.
>>> What is the best way to save power in Xorg and have a useful
>>> suspend-to-ram?
>> Is kms not working for you?
> In Ubuntu 10.04 KMS and powersaving in X do not mix (man radeon: This
> option is not supported with KMS enabled). So for me the options are
> KMS with a working suspend (maybe, not tested) or a long battery
> runtime.

With kms power management is done in the kernel where it needs to be
done because only kms has the full view of the hw (modesetting,
command queue, interrupts, etc.).

> What is the state of radeonfb and xorg - radeon running together?

It's a crap-shoot on x86.  In theory it should be ok, but lots of
people report issues.

> I really hope to one day install a linux distribution that does not
> require changing or patching the kernel by day three. So far in
> 5 years running debian and ubuntu on this Thinkpad it never happened.
> cu
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