[Mesa-dev] very strange intermittent frame-dropping

[Luke Kenneth Casson Leighton]

ok installed libxcb1-dbg from debian, that gives more info, sorry i
can't install all the dbg symbols because of conflicting dependencies,
it seems that the packages are not fully sync'd at debian/testing.

starting to look like an x11 (xcb-related) bug, not mesa, what do you think?

l.

Approximately the same as the monitor refresh rate.
328 frames in 5.0 seconds = 65.397 FPS
^C
Program received signal SIGINT, Interrupt.
0x00007ffff6b49180 in __poll_nocancel () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) where
#0  0x00007ffff6b49180 in __poll_nocancel ()
   from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff5042150 in _xcb_conn_wait ()
   from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ffff5043c0f in wait_for_reply ()
   from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ffff5043d81 in xcb_wait_for_reply64 ()
   from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007ffff7061018 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007ffff76a88ea in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#6  0x00007ffff76a8c47 in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#7  0x00007ffff3a899ca in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#8  0x00007ffff3a89f01 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#9  0x00007ffff3a75054 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00005555555566be in ?? ()
#11 0x0000555555555e38 in ?? ()
#12 0x00007ffff6a8b730 in __libc_start_main ()
   from /lib/x86_64-linux-gnu/libc.so.6
#13 0x000055555555646a in ?? ()