After some analysis, this looks like that it could be some problem with the graphics driver.
Could you please provide information about your graphics hardware and drivers etc.
It would also help to install the debug packages for X from http://ddebs.ubuntu.com/ and to gdb X with them.
Thanks
After some analysis, this looks like that it could be some problem with the graphics driver.
Could you please provide information about your graphics hardware and drivers etc.
It would also help to install the debug packages for X from http:// ddebs.ubuntu. com/ and to gdb X with them.
Thanks