Up,
Bon, j'ai pu récupérer des traces du crash Firefox après l'avoir lancé directement depuis Konsole. Voici ce que disent les backtraces :
The program 'firefox-bin' received an X Window System error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
(Details: serial 430668 error_code 165 request_code 149 minor_code 7)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0x30e767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x2e) [0x30e90e]
#2 /usr/lib/libX11.so.6 [0x2e8e0e9]
#3 /usr/lib/libXrender.so.1(XRenderFreePicture+0x41) [0x2e2d71]
#4 /usr/lib/libQtGui.so.4 [0x5382c8f]
#5 /usr/lib/libQtGui.so.4 [0x538374d]
#6 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x5d) [0x5377fbd]
#7 /usr/lib/libQtGui.so.4(_ZN7QPixmapD1Ev+0x30) [0x53783c0]
#8 /usr/lib/libQtGui.so.4 [0x5469eb7]
#9 /usr/lib/libQtGui.so.4(_ZN12QPaintEngineD2Ev+0x2f) [0x53b1b5f]
#10 /usr/lib/libQtGui.so.4 [0x5461552]
#11 /usr/lib/libQtGui.so.4 [0x5382bec]
#12 /usr/lib/libQtGui.so.4 [0x538374d]
#13 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x5d) [0x5377fbd]
#14 /usr/lib/libQtGui.so.4(_ZN7QPixmapD2Ev+0x30) [0x5378420]
#15 /usr/lib/libQtGui.so.4 [0x537d6ca]
#16 /usr/lib/libQtGui.so.4 [0x537dd3f]
#17 /usr/lib/libQtGui.so.4 [0x537d36a]
#18 /lib/libc.so.6(exit+0x89) [0x33e949]
#19 /usr/lib/libgdk-x11-2.0.so.0 [0x2d1f4b7]
J'ai fait quelques recherches sur GG et suis tombé sur ce Thread :
https://bugs.launchpad.net/ubuntu/+source/firefox-3.0/+bug/279240
Il semble donc que ce soit lié au mix Gtk Qt.
J'ai changé le moteur de rendu et attends de voir...
Thx.