Cannot run Ubuntu on Acer

**advanirajesh** · February 20th, 2012

Hi

I am trying to run Ubuntu on Acer 4520 Amd 64 Machine. I downloaded ubuntu-11.10-desktop-amd64.iso and prepared a pendrive to boot the machine from.

Problem:
The machine prompts me to select from one of the options like "Run Ubuntu from USB" / "Install Ubuntu..." / etc.

I tried multiple times to run Ubuntu from USB, but clicking on it runs several lines of some code that I do not understand and after some time it just stops.

History:

The machine has various partitions. On D the previous version (I think 8.04) of Ubuntu was installed which stopped working at some point so I formatted the partition using Disk management utility in Windows recently. This might be causing some problem, not sure.

I would appreciate an early help in this regard.

Thanks,

Rajesh

**Quackers** · February 20th, 2012

Welcome to UF

Does the screen just go black? It could be a video problem. I believe it has a Nvidia graphics chip so it may be an idea to try the nomodeset boot option as described in the link below

http://ubuntuforums.org/showthread.php?t=1613132

**advanirajesh** · February 20th, 2012

No. The screen does not go blank. Yes, it does have Nvidia Graphics. I tried nomodeset as you suggested, but it doesn't seem to help.

Thanks,

Rajesh

**advanirajesh** · February 20th, 2012

The image of screen showing where the whole thing just stops:

Awaiting an early help!

**Quackers** · February 20th, 2012

No image

**advanirajesh** · February 20th, 2012

Sorry, something went wrong. here is the link to image.

http://t.co/TBtFvJYQ

**Quackers** · February 20th, 2012

That appears to be a kernel panic. Do your caps lock and num lock lights start flashing when the screen stops?
Unfortunately I'm not sure what may be causing that. It may be an idea to try a different version of Ubuntu as that will use a different kernel.

Alternately somebody else may have more ideas.

**advanirajesh** · February 20th, 2012

Yes, the CAPS lock light starts flashing after the screen stops. I am not sure which version should I try. I guess, earlier the machine was on Ubuntu 8.04 or so.