Just so you know, I had the same problem. All I had to do to fix it was update my BIOS to the newest version and it works just fine now. You can get the BIOS updates at http://support.acer.com/drivers_download.aspx ... you might have to be in Windows to do it though, so hopefully you have duel-boot capabilities.
-- i have a acer aspire 5720 laptop, after a few hours the laptop shuts-down due to overheating, the internal fan does not come on https://bugs.launchpad.net/bugs/259223 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs