After Software configuration, cannot load GUI on reboot, logged in using live USB, need help

Discussion in 'Hardware Support' started by Shan Berg Liew, Jun 16, 2015.

  1. Shan Berg Liew

    Shan Berg Liew Thread Starter
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    Jun 15, 2015
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    Hello, I have just recently installed Elementary OS freya and everything was working fine until yesterday when I set the default brightness level using the instructions in and later installing xSwipe touchpad driver just now following the instructions in

    No problems occured on reboot after setting the default brightness level. As I installed the XSwipe and reached the reboot stage of the webpage, my laptop loaded with black screen and no GUI for awhile. I reboot and pressed Alt+F1 to look at the code interface. The first line of the code interface wrote

    Error "[drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun"

    When I switch back to the GUI with the E logo, it showed “Disk drive for dev/mapper/cryptswap 1 is not ready yet or not present”

    I have posted this problem to the Newbie section but no one has replied. I am now logged on using a live USB stick. I want to retrieve my files and data first before doing anything as I have dissertation work on this laptop. I can't move or copy files because the chmod command says I am not allowed to do so even though I have already set terminal to root privileges.

    Please help.

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