My acer aspire one 522 with a new ubuntu 12.10 or Kubuntu 12.10 installation (dual boot with win7) sometimes has a black screen but if I reboot once or more, I can login on desktop.
How can I fix this problem?
I think my problem is solved. I found that my USB gamepad is bad,because when I unplugged it, my system always works properly.
I found this solution from the