Ubuntu

Boot Issues. Please help.

Asked by Alexander Dalrymple

I'm dual booting with Windows 7 64 bit and Ubuntu 12.10. When I boot normally, it goes straight to Ubuntu. It will flash the Ubuntu red screen, then go black and lose signal. The computer stays on and everything but the screen is 100% blank and my monitor goes into stand by. If, when loading the BIOS, I hit F12 then choose to load Ubuntu, a new screen comes up. It askes how to tun it. Standard boot(selecting this repeates the same process, blank screen and input loss) or Advanced Ubuntu options. I have to put into recovery mode to get it to load. It runs about a 2 minute process of recovery then loads and I log in. Why won't it boot normally and how do I fix it?

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Solved by:
Hamish McIntyre-Bhatty
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actionparsnip (andrew-woodhead666) said : 		#1

Does the system have a make and model?
Is Ubuntu fully updated?

Thanks

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Alexander Dalrymple (ardalrymple) said : 		#2

What system? The computer? It's an x51 from Alienware. And yes, it is.

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Best Hamish McIntyre-Bhatty (hamishmb) said : 		#3

When you boot into recovery mode, a kernel option called nomodeset is set. Sometimes this needs to be set for normal boot as well. To do this, you need to edit /etc/default/grub. Run the command in a terminal :

gksudo gedit /etc/default/grub

and hit enter.

A text editor will open. You'll see a line which starts as :

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

You need to midify it so it reads:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset".

Save the file and quit gedit. Next run:

sudo update-grub

And you're finished.
Hope this helps

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actionparsnip (andrew-woodhead666) said : 		#4

http://quantumbeach.wikidot.com/bug:1

Why did your initial question state it was an Alienware x51?

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Alexander Dalrymple (ardalrymple) said : 		#5

Thanks Hamish McIntyre-Bhatty, that solved my question.

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actionparsnip (andrew-woodhead666) said : 		#6

In future, can you please give full details. It gets you help faster

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Hamish McIntyre-Bhatty (hamishmb) said : 		#7

You're welcome