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I have created a bootable USB stick (USB2/4GB) using the instructions at http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windows. Using 12.0.4 on 32bit laptop.

All seems to work, no errors. But when I then boot from this on a laptop, I get the Ubuntu logo, lots of output and then errors such as 

usb 1-3: device descriptor read/64, error -110
reset high-speed USB device number 3 using ehci-pci
device not accepting address , error -110

and finally unable to enumerate USB device on port 1 After this I can press enter and get a initramfs shell. I can then shutdown using a long press on power button. The shutdown command is not part of this shell.

So I am guessing that the stick is working otherwise I would not get this far though there may be corruption in the files(?). No other usb ports being used though touchpad/keyboard may be usb.

I have googled this and the only answer seems to be shutting down, removing the power cord (and in my case the battery) for 5 minutes and trying again. This has not worked.

I did get this working a few years back with the same USB stick (since reformatted) on a different laptop. This laptop is a thinkpad T61. Any ideas what I have done wrong?

Just to add the first line of output where it starts to go wrong is [initramfs] Unable to find a medium containing a live file system

Just compared checksum with what I downloaded and they are the same. I downloaded ubuntu-12.04.3-desktop-i386.iso

Regards, John

TrailRider
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John
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  • Just to add the first line of output where it starts to go wrong is [initramfs] Unable to find a medium containing a live file system – John Sep 22 '13 at 13:51
  • Just compared checksum with what I downloaded and they are the same. I downloaded ubuntu-12.04.3-desktop-i386.iso – John Sep 22 '13 at 14:01
  • Try another brand of USB stick? I've had problems in the past. Also try an alternative installer (the program that preps USB.) – fleamour Sep 22 '13 at 14:58
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    @John I edited your question to include your comments in the question(as well as added code blocks to your errors so they wer easier to read/find). If you need to add any info to your questions(or any answers you may make in the future) just click `edit` just below your question then click save rather than use comments. sorry I am not able to help you with an answer, I'm not sure what is going on here. you can delete your comment by clicking the `X` next to them to keep the question clean. – TrailRider Sep 22 '13 at 15:00
  • Hi fleamour, I tried with a new installer (UNetbootin) and though far less oitput it hands at the "Unable to find a medium containing a live file system" stage. I do not think it is the installer as such as it does boot from the USB. I noticed a similar problem on this forum where every version works except 12.04.3. So perhaps the answer is to take another version. – John Sep 23 '13 at 08:08
  • possible duplicate of ["unable to find a medium containing a live file system" error when installing](http://askubuntu.com/questions/15425/unable-to-find-a-medium-containing-a-live-file-system-error-when-installing) – LiveWireBT Jan 08 '15 at 10:32

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So I downloaded 13.04 and that worked fine. So the problem is 12.04.3 which I have to say is pretty poor. Perhaps it is my PC - a thinkpad so hardly a noname machine - but not impressed. Especially as others have raised this too.

John
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