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I can not start Ubuntu 12.10 from Live USB. Dell Latitude E5520, Intel Cote i5, 4MB RAM, 256 GB HDD. USB boot working well. Live USB created in Untebootin. The startup screen starts and I have options for Try, Install, etc. When I select an option it is the last thing I can do. Then the purple screen shows, system loading starts and gets stuck within a few seconds. I must hard reset the notebook. I can run this on desktop PC (old). Same problem I have w Kubuntu 12.10. I have Ubuntu 12.04.1 - I can run only this (as well Kubuntu). Any newer version (12.04.2, ..., x86 or amd64) fails.
Can anyone advise how to pass that?
Meanwhile I did following: I run the USB stick w LiveCD Ubuntu 12.10 in my old desktop equipped w AMD Athlon 64 dual core and ATI Radeon X3100 Graphic card. It did work so I assume it is not issue of corrupted iso file on USB stick. This assuption is stregthened by statement the issue persists on 12.04.2 version and I also did this excercise in last year October with different Ubuntu 12.10 download.
From my desktop I installed Ubuntu 12.10 on external HDD and connected to DELL notebook for boot. It boots and brings me to standard GRUB menu which I can edit. I tried to set parameters into startup script "no splash" and "nomodeset". It came again to the purple screen with UBUNTU logo and five white dots and froze again. The CPU fan is on full steam and nothing happens. Only hard reset helps.
I went through Advanced menu to Linux 3.5.0-27-generic (recovery mode) menu. I ran "dpkg", "fsck: w/o error. I ran "network" - this listed a list of plugins.
Last row showed text
modem-manager: Successfully loaded 20 plugins
and got stuck again.
On "failsafeX" option it showed error message (white box) The system is running in low-graphics mode. Mouse was not working and I coudl only hit Enter It did bring me to th menu "What would you like to do?" with four options but I could not select any other than the first one since it did not react on mouse or keyboard. I could not do anything than hard reset.