Comment 1 for bug 1258597

Revision history for this message
Removed by request (removed3425744) wrote : Re: Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.

Confirming this on Ubuntu 14.04 dev with grub-pc 2.00-21 even with a completely new generated /etc/default/grub.