I probably get something similar on Kubuntu 8.10. Firefox crashes randomly when scrolling a website. This is very annoying. I could get the following output when starting firefox on the command line:
----------------------------> app-startupICEDTEAPLUGIN_DEBUG = (null)
QPixmap: Invalid pixmap parameters
The program 'firefox' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAlloc (insufficient resources for operation)'.
(Details: serial 671596 error_code 11 request_code 53 minor_code 0)
(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 [0x7fa101c449fc]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_lock+0x17) [0x7fa101c44b77]
#2 /usr/lib/libX11.so.6 [0x7fa1045398c0]
#3 /usr/lib/libXrender.so.1(XRenderFreePicture+0x46) [0x7fa1047fca26]
#4 /usr/lib/libQtGui.so.4 [0x7fa0f9ec6cfb]
#5 /usr/lib/libQtGui.so.4 [0x7fa0f9ec7680]
#6 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x53) [0x7fa0f9ebcfa3]
#7 /usr/lib/libQtGui.so.4(_ZN7QPixmapD1Ev+0x24) [0x7fa0f9ebd2e4]
#8 /usr/lib/libQtGui.so.4 [0x7fa0f9f9f0bb]
#9 /usr/lib/libQtGui.so.4 [0x7fa0f9f97819]
#10 /usr/lib/libQtGui.so.4 [0x7fa0f9ec6c58]
#11 /usr/lib/libQtGui.so.4 [0x7fa0f9ec7680]
#12 /usr/lib/libQtGui.so.4(_ZN7QPixmap5derefEv+0x53) [0x7fa0f9ebcfa3]
#13 /usr/lib/libQtGui.so.4(_ZN7QPixmapD2Ev+0x24) [0x7fa0f9ebd334]
#14 /usr/lib/libQtGui.so.4 [0x7fa0f9ec2193]
#15 /usr/lib/libQtGui.so.4 [0x7fa0f9ec279f]
#16 /usr/lib/libQtGui.so.4 [0x7fa0f9ec1e85]
#17 /lib/libc.so.6(exit+0x9d) [0x7fa108bfe66d]
#18 /usr/lib/libgdk-x11-2.0.so.0 [0x7fa10388ac81]
#19 /usr/lib/libX11.so.6(_XError+0xf4) [0x7fa104532784]
Hope this helps anyone.
--
closes when scrolling
https://bugs.launchpad.net/bugs/47564
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