[Cialug] debian605+gdm3

[Dan Hockey]

<snip>.
> 
> If you wanted to try to explore the root cause...(which you
> might end up doing after reinstalling in text mode anyway):
> 
> Enter into init level 1, "recovery mode" or whatever
> mechanism you used earlier to get into a console.  You
> can also use "init=/bin/sh" as an added argument to the grub
> kernel line (but then issue "mount -o remount,rw /" after
> you're dropped to a shell).
> 
> Then, issue:
> 
>   cp /etc/X11/default-display-manager{,-bak}
>   cp /dev/null /etc/X11/default-display-manager
>   mv /etc/X11/xorg.conf{,-bak} # it might not exist...
> 
> Reboot.  The system should come up normally but without
> X.  Log in as root.
> 
> Issue "Xorg -configure" and look at the resulting
> xorg.conf.new that's produced.  Does the driver match
> (intel vs. nv vs. nvidia vs. ...)?  Is it displaying to
> the HDMI output by default instead of the VGA?  etc.
> 
> Take a look at /var/log/Xorg.0.log for indications of
> previous problems, too.
> -- Paul Gray             
>                
>            -o)
> 314 East Gym, Dept. of Computer Science     
>      /\\
> University of Northern Iowa       
>               _\_V
>  Message void if penguin violated ...  Don't mess with
> the penguin
>  No one says, "Hey, I can't read that ASCII attachment ya
> sent me."
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> 

what worked for me was...

update-rc.d gdm3 disable

at least now I can login directly

from looking at the log file it looks like it didn't recognize the
monitor and kept falling back to the next lowest res setting.
-dan