Can't reproduce, if you can provide a screenshot and the hardware information that would be helpful.
also please attach the output of glxinfo (install the mesa-utils package then run glxinfo on a command line)
running "apport-collect 632985" will attach a lot of hardware info to the bug report.
finally attaching the output of "lspci -vvnn" and "dmesg" will help too
Can't reproduce, if you can provide a screenshot and the hardware information that would be helpful.
also please attach the output of glxinfo (install the mesa-utils package then run glxinfo on a command line)
running "apport-collect 632985" will attach a lot of hardware info to the bug report.
finally attaching the output of "lspci -vvnn" and "dmesg" will help too