X problems with Radeon X300

[Peter Bloomfield]

Two problems have shown up running rawhide on a ThinkPad T43 with Mobility  
Radeon X300 video.  One is that resume fails with a blank screen and a  
non-responsive keyboard after many suspends--but that's something that  
comes and goes with releases of the ati driver.

The other is a mail agent that vanishes in a puff of smoke when switching  
mailboxes.  In gdb:

balsa: xcb_io.c:242: process_responses: Assertion `(((long)  
(dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed.

with the backtrace

#4  0x018d7374 in process_responses (dpy=0x817ba00,
     wait_for_first_event=<value optimized out>, current_error=0x0,
     current_request=0) at xcb_io.c:242
#5  0x018d7c35 in _XEventsQueued (dpy=0x817ba00, mode=2) at xcb_io.c:256
#6  0x018c04a8 in XPending (dpy=0x817ba00) at Pending.c:56
#7  0x009b59c6 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#8  0x05d53d79 in g_main_context_check () from /lib/libglib-2.0.so.0
#9  0x05d5454c in ?? () from /lib/libglib-2.0.so.0
#10 0x05d54caf in g_main_loop_run () from /lib/libglib-2.0.so.0
#11 0x002a78e9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#12 0x0809df04 in main (argc=2, argv=0xbffff444) at main.c:1149

The errors go away if the MUA is run with --sync, or if the radeon driver  
is replaced by vesa--that is, if I cripple the display performance, one  
way or the other.  I'm not sure what product against which to file a  
bug--or has it already been filed--any suggestions?
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