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Old 08-10-2010, 08:52 AM   #1
BewilderedStranger
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Video problems installing ubuntu.


Hello I just installed Ubuntu using Wubi and I am having problems with it. I am running an x58 Rampage II Gene with a radeon hd4850. I'm using a polaroid tlx-04240b hdtv for my monitor. After installing via wubi when I select ubuntu from grub I just get a blue screen that says no signal. I had the same problems before when I tried installing ubuntu and I finally gave up after messing with it for a while. Anyhow I finally started trying to figure it out again and I am brand new to linux so i really dont have a clue what to do here. I'm about 70% sure the problem is just the resolution being to high or the proper driver not installed but as i said I've never successfully used linux so i just dont know how to fix it. Any assistance would be greatly appreciated. Thanks
 
Old 08-10-2010, 10:23 AM   #2
m_yates
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Did you try booting Ubuntu CD? Normally, Ubuntu will boot from CD using a fallback standard VESA resolution that your TV should recognize. If that works, try installing from the CD instead of Wubi. You should then have a working video output to the TV, but it won't be 1080p resolution.

To get 1080p resolution, you need to have the correct driver installed. I believe the correct driver is xserver-xorg-video-radeon:
Code:
sudo apt-get install xserver-xorg-video-radeon
That may allow you to set the desired resolution. If not, you need to create a file at /etc/X11/xorg.conf for 1080p resolution. A good guide for that is here: http://www.mythtv.org/wiki/Modeline_Database

I have a Samsung 720p TV, and I had to create my own xorg.conf file in order to get it to work. Ubuntu installed with 800x600 resolution I believe.
 
Old 08-10-2010, 12:55 PM   #3
BewilderedStranger
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Thank you for the help. I was unable to boot from the live cd as well i get the screen with all the options and I tell it to run without making changes then I lose signal. A couple more questions how do i get to the prompt to punch in the command and how do i navigate from one folder to another and look at the contents of the folder within the prompt? Again thank you for the assistance.

Last edited by BewilderedStranger; 08-10-2010 at 12:57 PM.
 
Old 08-10-2010, 03:25 PM   #4
m_yates
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Using the CD, at the boot page press "F4" and select "safe graphics mode". You should then be able to boot up graphically and install from there.


To enter commands, open the "terminal" program found under:

Applications>Accessories>Terminal

in the upper left hand corner of the screen.

Alternatively, you can press the keys ctrl+alt+F1 to get to a command-line only runlevel. You can return to the graphical desktop by pressing ctrl+alt+F7.

To navigate to directories, use the "cd" command. For example:
Code:
cd /etc/X11
will put you in the directory /etc/X11. Once there, you can list files with the "ls" command:
Code:
ls
You should see your xorg.conf file there. To edit it, use "nano":
Code:
sudo nano xorg.conf
save changes by pressing ctrl+o and exit nano with ctrl+x

Hope that helps.

Last edited by m_yates; 08-11-2010 at 08:51 AM. Reason: typo error
 
Old 08-11-2010, 12:07 AM   #5
BewilderedStranger
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I just can not find this safe graphics mode option.i've pressed f4 at every screen i could press f4 at and wether i select try ubuntu without making changes to your system install ubuntu check disk for errors or anything i end up with no signal. i uninstalled ubuntu using wubi and tried getting anywhere and everywhere from the live cd to no avail. this is bang head on wall aggrivating especially since i popped the 32bit version of the same disc into one of our older computers and it popped right up no problem.i cant seem to get to any command prompt or anything at all. anyhow thanks again for the help.
 
Old 08-11-2010, 08:49 AM   #6
m_yates
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Here are detailed instructions for the various boot options, including safe graphics mode:
https://help.ubuntu.com/community/BootOptions
 
Old 08-11-2010, 08:22 PM   #7
BewilderedStranger
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hmm interesting

I read that page and I see the picture however pressing f4 at the menu on a fresh copy of 10.04 lts 64 bit downloaded from the website brings me the oem install option normal or use driver disc no safe graphics mode.
 
Old 08-12-2010, 07:25 AM   #8
m_yates
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Try downloading the alternate install CD image described here:

http://www.ubuntu.com/desktop/get-ub...ative-download

You can then use the text-based installer.
 
  


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