[Mesa-dev] [Bug 29211] New: Recent Mesa breaks KDE with UMS too (previously only KMS was broken)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29211

           Summary: Recent Mesa breaks KDE with UMS too (previously only
                    KMS was broken)
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Other
        AssignedTo: mesa-dev at lists.freedesktop.org
        ReportedBy: realnc at gmail.com


I rebuilt Mesa Git master.  A problem I was previously having only with KMS is
now also there with UMS:  KDE (4.5 RC2) is extremely slow and "laggy" when
minimizing/restoring and moving windows.  For example, the window minimize
animation that previously took under 1 second to complete with even and smooth
animation, now takes about 3 or 4 seconds, and the speed of animation - even
though smooth - varies extremely.  The window begins to "zoom out" towards the
task bar very, very slowly, then picks up a bit of speed again, then slow
again, etc.

Moving windows is also very broken. When grabbing the title bar, the GUI
freezes for a bit, then you can move the window around, but while moving, it
freezes again every 1 or 2 seconds.

Everything is really glitchy, making the desktop unusable. As I mentioned
earlier, this was happening when using KMS in the past. Now it also happens
with UMS.

I'm using:
xf86-video-ati Git master on a Radeon HD4870.
kernel 2.6.35_rc5
Mesa Git master
libdrm Git master
X.Org server doesn't matter (happens with anything between 1.8.0 and Git
master)

I reverted to the previous Mesa Git build I was using before (I'm using Gentoo,
so I first created a binary package before emerging latest Git so I can revert
back to it.) I don't know which Git revision it is; is there a way to find out?
Must have been about a week or since I last rebuilt it from Git.

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