Mailinglist Archive: radeonhd (330 mails)

[bugzilla-daemon@xxxxxxxxxxxxxxx]

http://bugs.freedesktop.org/show_bug.cgi?id=18097

           Summary: EXA + Composite causes GLX apps to hang
           Product: xorg
           Version: 7.4
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/radeonhd
        AssignedTo: lverhaegen@xxxxxxx
        ReportedBy: yang@xxxxxxxxxx
         QAContact: xorg-team@xxxxxxxxxxx


Running glxgears under a composite-enabled DE (in my case, Gnome) causes X to
hang after a second or two. Screen no longer redraws, load is increased
significantly (7~8 on an otherwise idle system) but HW cursor still functions.
Not reproducible with just a plain X server.

radeonhd from git master: efaebb70294055f371cd328124b23a343cea6a68

Alex Deucher and I narrowed it down to bad EXA/Composite interaction on IRC.
Turning on EXANoComposite seems to work around it.

Neither dmesg nor Xorg.0.log seem to show anything.


I've observed this behaviour before CS branch merge, but only after the GLX app
has run for significantly longer, or if I move around the window the app is in.
Did not report earlier as I was unsure if it was due to my power management
code.

The new CS code seems to expose the bug more consistently and quickly.


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