Page 2 of 2 FirstFirst 12
Results 11 to 14 of 14

Thread: 304.48 pre-release for Linux/Solaris/FreeBSD

  1. #11

    Default

    Quote Originally Posted by narciso View Post
    Kwin dev's passed the ball to nvidia drivers.
    KWin developers just trying to find root of the tearing issues with nVidia drivers: http://blog.martin-graesslin.com/blo...#comment-50548
    Last edited by RussianNeuroMancer; 09-13-2012 at 10:01 AM.

  2. #12
    Join Date
    Jul 2008
    Location
    Greece
    Posts
    3,763

    Default

    Well, I was told that it's X11's fault and that the low power mode of the GPU is enough for Windows Aero, but not enough for X11. The GPU can't keep up with the memory bandwidth requirements of X11 (yes, that means that compositing on X11 is a resource hog compared to Windows, which is supposed to be light-weight.) Wayland is supposed to fix that.

    The result is framebuffer tearing (which in the end is just as visible as screen tearing.) Switching the GPU to higher speed gets rid of that tearing.

    Edit:
    This is the thread: http://forum.kde.org/viewtopic.php?f=111&t=99090

  3. #13
    Join Date
    Sep 2012
    Posts
    5

    Default

    Hi, I also work on the NVIDIA Linux Graphics team and have been investigating the kwin/VDPAU interaction problems.

    There is an upstream fix for the performance issue described in this link in kde-workspace; see

    https://projects.kde.org/projects/kd...0d7dc5d08401a5

    I have backported this patch to kde-workspace_4.8.4a-0ubuntu0.1; see http://pastebin.com/8DmsyTP7 . I hope this helps!

    Brian Nguyen
    NVIDIA Linux Graphics

  4. #14
    Join Date
    Sep 2012
    Posts
    5

    Default

    Hi, I am also a developer on the NVIDIA Linux Graphics team, and I have been investigating the performance issue described in the nvnews thread (http://www.nvnews.net/vbulletin/showthread.php?t=173519).

    A fix has been submitted upstream to kde-worskpace; see https://projects.kde.org/projects/kd...0d7dc5d08401a5 . I have backported this patch to the kde-workspace_4.8.4a-0ubuntu0.1 version; see http://pastebin.com/8DmsyTP7 .

    I hope this helps!

    Regards,
    Brian Nguyen
    NVIDIA Linux Graphics

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •