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I am on Ubuntu 14.04 on this hardware (with no external/proprietary driver needed).

These are the enabled official repositories (all but proposed) and these are the external ones (Google Chrome, Dropbox, Google Talk Plugin).

This is my /etc/default/grub.

The problem is that, if (and only if) I wait for GRUB to finish its countdown, then when I come to Lightdm the system freezes.

I can move the mouse but there is noy input on click, more important there is not keyboard input, (so no Ctrl+Alt+F1-7 to investigate and to shutdown, nor SysRq+REISUB, only force shutdown with long press power button).

If at boot I skip the GRUB waiting time (just press Enter), the problem does not appear and everything works great.

Any hint on what might be causing it and how to investigate?

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  • No hints on this? :( :(
    – dadexix86
    Dec 27, 2015 at 10:05

1 Answer 1

Reset to default
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info -f grub -n 'Simple configuration' on ubuntu 15.10 says:

'GRUB_HIDDEN_TIMEOUT_QUIET'
         In conjunction with 'GRUB_HIDDEN_TIMEOUT', set this to 'true' ...
         deprecated in favour of the less confusing 'GRUB_TIMEOUT_STYLE=countdown'.
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