Last bit of advice, a simple thing to try is to (re)install the
graphics driver. If you have AMD/ATI or NVIDIA graphics, we
strongly recommend that you install the proprietary driver that
is installed with the
Additional Drivers tool in the
System
Settings dialog. If you have Intel graphics and
glxinfo
works, but Chimera doesn't, then make sure you have all the
Ubuntu patches installed. But even if you keep your system
up-to-date, if you have Intel graphics, you should switch to
newer versions of Ubuntu when they come out -- for instance,
today, you should upgrade to 12.10, and I'd recommend 13.04 when
it comes out,
ad infinitum or at least for the next 5
years, until the Intel graphics driver is much less buggy (it
has drastically improved in the last couple of years, but there
is much more being done).
HTH,
Greg
On 11/06/2012 12:26 PM,
sette@uniroma2.it wrote: