https://bugs.freedesktop.org/show_bug.cgi?id=38800

--- Comment #3 from Simon Farnsworth <simon.farnswo...@onelan.co.uk> 2011-06-30 
05:20:41 PDT ---
I turned on verbose logging by adding -logverbose 65535 to my X startup line,
and I can see the following in the log:


[  3640.369] (II) RADEON(0): radeon_dri2_schedule_flip:619 fevent[0x99fa868]
[  3640.384] (II) RADEON(0): radeon_dri2_flip_event_handler:981
fevent[0x99fa868] width 1920 pitch 7680 (/4 1920)

If I'm understanding the code in radeon_dri2.c properly, this suggests that I'm
not getting a page flip happening, as radeon_dri2_schedule_flip does a
DRI2_SWAP type buffer exchange, not a DRI2_FLIP. It appears that DRI2_SWAP is
"exchange front buffer with back buffer, blit contents to screen".

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