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I know this is not the ideal order to install things, but I already had a working Kubuntu system and needed to add Windows. Once Windows was installed (took a while) I used a live Ubuntu to re-install the Grub menu. I get the menu, but when I boot to Kubuntu I get the pulsing logo for a while and then the screen below.

I tried the suggestion from this question of disabling Fast Boot in Windows, but it made no difference. I can boot into Windows with no problems.

If I hit enter I get a root prompt. I can run startx there and I get a UI minus the task bar. The error imply a graphics issue, but then graphics appear to be working. I assume Grub is not directly the issue as that can boot either system. I tried an older kernel, but that fails in the same way.

This is a home made desktop PC based on AMD A8-6500 with the built-in graphics. It has worked fine for years before this. Using 64 bit Kubuntu.

Any ideas?

enter image description here

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  • Try to boot with windows and then reboot and choose ubuntu. Always works for me. Aug 13, 2016 at 14:56
  • That's how it should work, but choosing ubuntu (or Kubuntu in my case) always gives this error
    – steevc
    Aug 13, 2016 at 15:07
  • Just out of curiosity, did you find a solution to your problem? Sep 11, 2016 at 10:26
  • I'm afraid not. Had to reinstall and then it worked fine.
    – steevc
    Sep 13, 2016 at 8:05
  • Mine was related to some windows disks being held onto. In windows "shutdown /s /t 5" fixed it so ubuntu booted
    – Brian
    Feb 1, 2017 at 16:36

1 Answer 1

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I didn't find a solution to this. I ended up doing a fresh Ubuntu install. I was able to use the existing /home, so a lot of settings were preserved

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