Is there a way to boot Ubuntu-11.10 to a command line interface so I can bypass the graphics to regain control of my PC and do some apt-get updating? I have been hit by “Cannot display this video mode” again and this time, no matter what I do, I cannot get past this hurdle.
I installed Ubuntu-11.10 a little over a month ago and had some problems connecting to an old Dell 1280x1024 60 Hz LCD screen: “Cannot display this video mode” when Ubuntu tries to take final control of the screen after boot-up. Thanks to advice from Fantab (posting #4), I was able to resolve the issue by creating a script to set the screen to a known-good resolution/frequency and placing a link to this script in /etc/X11/Xsession.d/ so the script would be executed on startup.
Regrettably, this fix no longer works. I could only access my PC with a Ubuntu-11.10 CD.
Several things changed after the last update on 30-Dec-11:
- The link to the fix resolution script was remove from /etc/X11/Xsession.d/, probably because this folder was overwritten. However, restoring the link did not remedy the situation.
- “CRT1” is no longer recognized by xranadr. It has changed to “VGA-0”. However, fixing the resolution restoring script to address this did not remedy the situation.
Other efforts that failed:
- Changing the resolution restoring script to set a lower resolution from 1280x1024 60 to 1024x768 60 used successfully by the Ubuntu-11.10 CD.
- Uncommenting “# GRUB_GFXMODE=640x480” and changing it to “GRUB_GFXMODE=1280x1024x16,800x600x24,640x480”.
..and, uncommenting “#GRUB_TERMINAL=console” still resulted in a black “Cannot display this video mode”.
In short, my PC is unusable until I can get the screen to work again. Worse yet, I am unable to install any updates that may have resolved the "Cannot display.." issue.