On Tue, 2010-01-19 at 16:24 +0000, Andy Whitcroft wrote: > We have been seeing a number of i915 issues in Lucid. First the random > 'twitching' of the screen left and right for a single frame. Second > dropping randomly to an all one colour screen, commonly white, black, or > blue in my experience. Finally some have been seeing crashes on resume > also with a black screen (this last may be a manifestation of the second). > > This seems to all be related to the new clock wiggling for power saving. > Disabling power saving via i915.powersave=0 seems to resolve these > issues across a cross-section of the netbooks we have (which seem the > worst affected). > > For now switch the default for this option to off as the symptoms are > pretty severe. Leave the option in for later testing. This change is also pending in Debian. However, I wonder whether 2.6.32.4 improves the behaviour with power-saving enabled? There are a lot of i915 fixes in it. Ben. -- Ben Hutchings Any smoothly functioning technology is indistinguishable from a rigged demo.
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