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Xubuntu 16.04, Grub 2.02~beta2-36ubuntu3

I edited the timeout to 3 seconds:

GRUB_TIMEOUT=3

Then run:

sudo update-grub

Timeout during grub boot is still 10 seconds. What am I doing wrong?

Edit: Suggested duplicate question's answer does not address the specific issue that GRUB_TIMEOUT and GRUB_HIDDEN_TIMEOUT cannot both be enabled simultaneously, and therefore to change GRUB TIMEOUT from its default setting, GRUB_HIDDEN_TIMEOUT must be commented out.

jub
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  • Do you have a `GRUB_HIDDEN_TIMEOUT ` line specified somewhere? – Jos Jun 15 '16 at 12:32
  • @Jos, yes: `GRUB_HIDDEN_TIMEOUT=0` and `GRUB_HIDDEN_TIMEOUT_QUIET=true` – jub Jun 15 '16 at 13:47
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    Comment out these two lines and run `update-grub` again. It should work now. See http://askubuntu.com/questions/475993/grub-update-warning-in-ubuntu-14-04. – Jos Jun 15 '16 at 13:54

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