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Re: X freeze the system after upgrade

On Thu, 03 Feb 2011, Sven Joachim wrote:
> On 2011-02-03 16:41 +0100, T o n g wrote:
> KMS is indeed not required yet, but I bet it will be sooner or later.

Hmm?  IME Squeeze is absolutely UNUSABLE without KMS on a Radeon X300
(ThinkPad T43p).  Besides, Mesa/DRI in Squeeze is incompatible with
non-KMS radeon.

Which is a pain, since KMS is very bad at saving power and has worse
performance in a X300 than the older non-KMS stack.  For the first time
in 5 years, I managed to get unknown NMIs in that box, all it took was
to enable the KMS auto profile (which is much worse than the old dynamic
clocks stuff at saving power), and switch from battery to AC.

There's also the added agravation that you have to hunt down and remove
every sleep hack (like s3_bios, s3_mode, vbetool...), since they break
things with KMS.

I guess they will have removed all performance and usability regressions
by 2.6.42 or thereabouts.  It is a very sad situation, brought forth by
the lack of backwards compatibility in mesa/X with the (currently
superior) non-KMS DRI drivers.

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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