I am having the same bug, and recordfail=1 even if concurrency=none for me. If I set recordfail=0 and restart grub works.. once. The next time I restart it goes back to not using a timeout. I should note that I never changed the concurrency setting at any time, it was always =none for me.
I am having the same bug, and recordfail=1 even if concurrency=none for me. If I set recordfail=0 and restart grub works.. once. The next time I restart it goes back to not using a timeout. I should note that I never changed the concurrency setting at any time, it was always =none for me.