Comment 6 for bug 136853

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Oliver Mihatsch (olli-knaeul) wrote : Re: [Gutsy] multiple regressions since Feisty

Same problem here, after updating to gutsy my Amilo M (Silicon Motion SM720 Lynx3DM) runs awfully slow. The Xorg process took 100% CPU just to redraw a window. Also text console was not working.

I've found two workarounds:
To reenable the text console (from Bug #144178 )
"sudo modprobe vga16fb"
"sudo modprobe fbcon"
and ALT+F1 should work again

To get rid of the corruptions and performance problems change in the /etc/X/xorg.conf from 24bit color depth to 16 bit color depth (Display Section). (from Bug #154514 )