Last night I tried to upgrade from Ubuntu 11.10 to 12.04. The upgrade process had numerous errors, but I let it continue assuming that it would safer than interrupting it. Near the end, two conflicting messages appeared: "too many errors" and there was also a message telling me that the system was upgraded nonetheless. The only option I was presented at that point was to reboot, which I did, but the reboot just hanged. Then I tried to boot under "recovery mode" but the system gets into an infinite loop with the message. So I tried to re install from 10.10, which went OK, including updates. Then I upgraded to 11.04 (which I had done before) and the system fails to reboot after the update.
CPU: AMD FX-6100 Zambezi 3.3GHz Socket AM3+ 95W Six-Core MOBO: ASUS M5A97 AM3+ with Bios Version = 1208, which is the most updated as of 2012.05.25 Video Card: EVGA 01G-P3-1556-KR GeForce GTX 550 Ti
Is there a compatibility problem caused by having an nVidia GeForce graphics card with an AMD CPU?