I solved it. Pilot error in this case. I had some old X libraries around on this computer's /usr/X11R7/lib directory, from earlier attempts to partially upgrade it. (For reasons of a bug that manifested with left-handed mice and gtk3; I think I wrote about that before). The clue was: > #0 0x00007e891d977450 in _X11TransWritev () from /usr/X11R7/lib/libX11.so.6 where libX11 is supposed to be version 7, not 6... Removing a bunch of old files helped. It also helped my troubles with vlc; it doesn't crash at startup anymore but as usual after almost 30 seconds. How a library with the wrong major number got loaded, I'm not sure. One aspect may be that a whole bunch of libraries were loaded at runtime into python as part of the PyQt package. And how does one use the files in the (x)debug.tgz sets with gdb? I tried passing them with gdb -s, or with (gdb) add-symbol-file, but neither worked. -Olaf. -- ___ Olaf 'Rhialto' Seibert -- "What good is a Ring of Power \X/ rhialto/at/falu.nl -- if you're unable...to Speak." - Agent Elrond
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