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I'm using a USB keyboard but it wasn't like this right after I installed 12.04x64

One detail though: right after I installed the AMD Radeon drivers both the GRUB screen and Ubuntu's boot sequence looked different, specially the Ubuntu screen which now seems lowdef and stretched.

Update: uninstalling the drivers seemed to have fixed this, but now I don't know how it will affect the performance of my system.

Update 2: the problem is back, and now flash video stops after a few seconds (don't know if related but since it started at the same time...)

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  • So, what driver are you using now? I find that my HD6770 card runs 15-20C cooler with the proprietary Catalyst driver (fglrx) than the open source radeon driver, so I try to use fglrx on all my installations. I am certainly having no problems with the one in the repository for 12.04.
    – Tim
    Jun 11, 2012 at 14:40
  • try to hold on <kbd>Shift</kbd> while booting
    – hingev
    Jun 11, 2012 at 14:45
  • @Tim: thats the driver that was causing the problem, so I uninstalled it.
    – Ghost
    Jun 12, 2012 at 13:55

1 Answer 1

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Sometimes some computers have problems with USB support before the operating system starts. Does it work with a PS/2 keyboard (if you have a PS/2 port on your computer for that)?

Enabling legacy USB support in your BIOS if you have the option will usually fix this.

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