New install of Ubuntu 13.04 won't boot states can't detect video card info and tries to go into low res mode. How do I fix this?

Try the bootoption:

radeon.nomodeset=1

Thanks for trying to answer my problem. I don't know where I would be able to do what you suggest. When I try to boot the machine it gives me a small square in the middle of the screen that states that the system can't find my video information and will operate in low res mode. There is an OK button to click but the mouse courser doesn't come up and if I hit enter it goes to a second screen which offers four choices with the top one selected, boot in low res mode. I get no mouse courser and can't select any other choice than boot with low res mode. If i hit enter the window goes away but nothing else happens. When this first happened I did get an X courser but that now no longer happens. Another time I got a grub choice screen and didn't choose to boot in rescue mode and it went nowhere.

I just got the following error which is interesting as I don't have a floppy drive.

Unable to mount Floppy Disk

Error mounting /dev/fd0 at /media/ubuntu/disk: Command-line `mount -t "auto" -o "uhelper=udisks2,nodev,nosuid" "/dev/fd0" "/media/ubuntu/disk"' exited with non-zero exit status 32: mount: block device /dev/fd0 is write-protected, mounting read-only
mount: /dev/fd0: can't read superblock

So anyway I don't know where to enter what you suggest. Is there any way to edit the boot files for 13.04 on my main drive with the 12.10 system? If so what would I edit to say what? Do you have any idea what happened to the 100 GB that I had on my harddrive before the install and could that be the cause of my problems?

Cheers,

Hugh G. "Sam" Ball

And Always Remember,

This Too Shall Pass

-----Original Message-----
From: actionparsnip <email address hidden>
To: huehueteot <email address hidden>
Sent: Wed, May 1, 2013 10:26 pm
Subject: Re: [Question #227967]: New install of Ubuntu 13.04 won't boot states can't detect video card info and tries to go into low res mode. How do I fix this?

Your question #227967 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/227967

    Status: Open => Answered

actionparsnip proposed the following answer:
Try the bootoption:

radeon.nomodeset=1

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You have to "play" with the console. Little bit difficult for a non-experienced user, but it can be done.

During boot hold down the Shift key until GRUB menu appears. Then select the Recovery Mode entry.
After load, you will see a window with options. First select Network and answer Yes. Then select root and execute the command below

    mount -o rw,remount /

Then you have to open the /etc/fstab file and edit it. (CAREFULLY).

    nano /etc/fstab

navigate with arrows and find the line about floppy. Add at the begging of the line a hash symbol (#). Now save the file with:
1) CTRL+X
2) Y(es)
3) ENTER.

Now reboot your system with this command

    reboot

If you follow above CAREFULLY, you should be fine. If you make a mistake either on commands or file (fstab) editing you may end up with a completely broken system.

Regards
 NikTh

https://help.ubuntu.com/community/BootOptions