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Bug#636135: xserver-xorg-video-radeon: Logout of KDE gives black screen with pointer still visible.



> This looks like the X server is waiting for input, so maybe kdm fails to
> reconnect to it after the reset for some reason.

I have included the trace for kdm and kdm_greeter (taken after logout during black screen with only pointer), maybe someone will find it useful:

kdm trace:
#0  0x00007f0d28fd5e43 in __select_nocancel () at ../sysdeps/unix/syscall-template.S:82
#1  0x00000000004084d2 in mainLoop (argc=<value optimized out>, argv=<value optimized out>) at ../../../kdm/backend/dm.c:1260
#2  main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kdm/backend/dm.c:317

kdm_greeter trace:
#0  0x00007fae06e17723 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=499) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fae03f329e4 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fae03f32f1d in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fae08732abf in QEventDispatcherGlib::processEvents (this=0x2252c80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#4  0x00007fae07b649ce in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#5  0x00007fae087071c2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fae087073bf in QEventLoop::exec (this=0x7fffcbce45b0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fae07f6f4d6 in QDialog::exec (this=0x23e56b0) at dialogs/qdialog.cpp:552
#8  0x000000000041dfb3 in FDialog::exec (this=0x23e56b0) at ../../../kdm/kfrontend/kfdialog.cpp:155
#9  0x00000000023e56b0 in ?? ()
#10 0x00000000022cc230 in ?? ()
#11 0x00000000022cc230 in ?? ()
#12 0x000000000228b410 in ?? ()
#13 0x00000000004191d7 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kdm/kfrontend/kgapp.cpp:483

Not sure what to make of this bug. Might not even bee the radeon module that's the root cause, could be a problem in X or KDM which is only exposed with certain combinations of video drivers and hardware.

Is there any downside to running with "TerminateServer=true" in kdmrc?





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