Buffer related input event bug? -- 1.4.1~git20080131

[Peter Hutterer]

On Thu, Jul 24, 2008 at 02:45:30PM +0200, Rohan Lean wrote:
> Was there any change done between 1.3.0.0 and 1.4.1~git20080131 that
> would induce some seemingly buffer related bug in the forwarding of
> input events to clients?

the whole input subsystem was basically rewritten, so yes, there could very
well be such a change.

> Ever since I upgraded to Ubuntu 8.04, when I move the mouse fast in
> games, all input is being delayed and processed in large chunks until
> the situation stabilizes again after I have not moved the mouse at all
> for a while.
> My rough estimate for the speed at which this happens is 30cm/s at
> 1800CPI, or 21260C/s.
> The effect is exacerbated when I remove the CorePointer option from the
> mouse. Then it already happens at very low speeds.
> The bug does not occur on the Desktop itself.
> 
> I am fairly certain that it is related to xorg, as downgrading SDL to
> the version that was used before the distribution upgrade did not change
> anything.

could be DGA getting a bit excited then. anything interesting in the log
files?

Cheers,
  Peter