Comment # 104
on bug 66963
from Eugene
(In reply to comment #103) > (In reply to comment #102) > > If you could explain me where is kernel command line (when I'm seeing GRUB > > menu push "e" or "c"; and if "c" what to do after I entered radeon.modeset=0 > > in there?), I would try it. I'm just a newbie using kubuntu a few months. > > in the grub menu select the kernel you want to boot and press 'e' then move > to the end of the line that starts: > linux /boot/<blah blah blah> > and append the options to the end of that line. e.g., > linux /boot/<blah blah blah> radeon.modeset=0 1 > The '1' means boot into single user mode rather than X. > > Also, if you haven't already, try disabling aspm: > linux /boot/<blah blah blah> radeon.aspm=0 radeon.dpm=1 Thanks for your explanations. Recently tried it. But...: with > linux /boot/<blah blah blah> radeon.aspm=0 radeon.dpm=1 still blank screen after starting kernel loading with > linux /boot/<blah blah blah> radeon.modeset=0 1 it seems it's booting but I can't see command line - only black screen or text line: "kernel booting... bla-bla-bla" and also no command line. Trying to enter anything gives nothing. But if a enter "reboot" and press Enter it restarts. So it gets the commands but I can't see any display output.
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