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[Bug 1195811] Re: nouveau: Abnormally high FPS (no vsync) on natively mir testing demo-clients.

 

Confirmed the following two kernel patches together fix the problem perfectly for Mir:
http://lists.freedesktop.org/archives/dri-devel/2013-August/043406.html
http://lists.freedesktop.org/archives/dri-devel/2013-August/043407.html

Now Mir under nouveau is always 60Hz with no tearing.

Unfortunately the patches make legacy X/Compiz much worse... only about
30Hz.

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https://bugs.launchpad.net/bugs/1195811

Title:
  nouveau: Abnormally high FPS (no vsync) on natively mir testing demo-
  clients.

Status in Mir:
  Triaged
Status in “linux” package in Ubuntu:
  In Progress

Bug description:
  I installed Ubuntu 13.10 (yesterday)  in order to test Xmir and Mir natively (examples-clients). Xmirg worked flawlessly. The only "problem" was the duplicate mouse cursor(s).
  But I noticed an abnormally high FPS in some clients demo when I tested Mir natively per these instructions
  http://unity.ubuntu.com/mir/using_mir_on_pc.html

  I recorded the test case using external camera.  Apologies for the quality but you will see the values.
  http://www.youtube.com/watch?v=zil-lRNlaks

  I attached an apport.log just for more info if are needed.

  I'm not a technical guy and I filled this report prompted by @duflu in IRC #ubuntu-mir
  You can read the mini conversation here.
  http://irclogs.ubuntu.com/2013/06/28/%23ubuntu-mir.html

  This test had the same results either if X only was running in VT7 (Video)  or Xmir.
  I hope I helped... in something.

  Regards
   NikTh

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