ubuntu-x-swat team mailing list archive

[Sam Spilsbury <smspillaz@xxxxxxxxx>]

Indeed, we're currently only allowing crash fixes into the distro.

My sincerest apologies over the confusion with this, it was a good
fix, but breaks of the ABI breaks there was some confusion caused. The
non-ABI breaking fix will be in the next SRU.

On Tue, Oct 4, 2011 at 3:52 PM, Daniel van Vugt <vanvugt@xxxxxxxxx> wrote:
> Thanks to Didier for clarifying... This fix missed the oneiric release
> but will be in the first update.
>
> --
> You received this bug notification because you are a member of Unity
> Bugs, which is subscribed to unity.
> https://bugs.launchpad.net/bugs/763005
>
> Title:
>  Compiz's "Sync to Vblank" makes display stutter/slow with some drivers
>  (like fglrx)
>
> Status in Compiz:
>  Fix Committed
> Status in Unity:
>  Fix Committed
> Status in “compiz” package in Ubuntu:
>  In Progress
> Status in “fglrx-installer” package in Ubuntu:
>  Confirmed
>
> Bug description:
>  This bug has been found to affect users of fglrx (ATI/AMD) and Intel
>  graphics drivers. NVIDIA users should look to bug 92599 instead.
>
>  TEST CASE:
>
>  Make sure "Sync To VBlank" is enabled in the OpenGL section of
>  CompizConfig Settings Manager. In Ubuntu 11.04 it is enabled by
>  default.
>
>  fglrx: Drag some windows around. Also open and close windows. The
>  animations will not be smooth as they appear to stutter. The framerate
>  is only around 20-30Hz.
>
>  intel and possibly any driver: Press WinKey+S or WinKey+W rapidly to
>  trigger the expo/workspace animations. These are full-screen
>  animations. But are they silky-smooth?
>
>  Now turn "Sync To VBlank" off and repeat the above steps again. If you
>  notice the animations are much smoother than with "Sync To VBlank" on
>  then you are suffering from this bug.
>
>  ORIGINAL DESCRIPTION:
>
>  Package: fglrx
>  Version: 2:8.840-0ubuntu2
>
>  01:00.0 VGA compatible controller: ATI Technologies Inc Juniper
>  [Radeon HD 5700 Series]
>
>  I have ATI's 5770 with fglrx. Having "Sync to Vblank" on makes Unity
>  and many Compiz features (Enhanced Zoom, Scale etc.) really slow.
>  Turning "Sync to Vblank" off has a huge effect on desktop,
>  responsiveness is much, much better. Turning "tearing" off/on from
>  amdccle doesn't seem to have any effect on responsiveness.
>
>  In Maverick "Sync to Vblank" was off by default, in Natty it's on.
>  This will probably have a huge impact on many fglrx users.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/compiz/+bug/763005/+subscriptions
>


-- 
Sam Spilsbury

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to fglrx-installer in Ubuntu.
https://bugs.launchpad.net/bugs/763005

Title:
  Compiz's "Sync to Vblank" makes display stutter/slow with some drivers
  (like fglrx)

To manage notifications about this bug go to:
https://bugs.launchpad.net/compiz/+bug/763005/+subscriptions