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During a reboot, my grub menu is always hidden (the default is not-hidden), unless I power the machine off for at least a few seconds and restart the machine. Then the grub menu will be shown.
My /etc/default/grub file is shown as follows, it was created by bkworm or sid installations by default:
I had a similar problem some years ago.
It turned out that the monitor did not receive a signal until the 5 seconds in GRUB_TIMEOUT had passed.
I changed GRUB_TIMEOUT to 15 seconds which made the GRUB menu visible for the last few seconds of the 15.
You could try the same workaround.
Everything is good now. Never realized that dp vs hdmi could make such a big difference. Or it could have just been a bad/inadequate hdmi cable. Thanks a whole lot for sharing the experience.
pwzhangzz wrote: ↑2024-01-27 18:38
Everything is good now. Never realized that dp vs hdmi could make such a big difference. Or it could have just been a bad/inadequate hdmi cable. Thanks a whole lot for sharing the experience.
Don't know the details, but dp seems to work so much better with linux. My wife bought a new monitor, she got it working once or twice after several dozens reboots, that was hdmi. She bought another, which works better. I tried the first with my pc, which has a dp connector, and it has worked every time.
I have heard also others have had problems with hdmi.
Awhile back I changed out a monitor used by three computers, one vga, one DVI, on hdmi. Two never had issues, one always failed to display the lvm decrypt, or grub thru hdmi. Doing it blind always worked. I thought it was the particular installation. With no changes other than monitor that install now post fine. No idea why.
I have two monitors, one DP, the other a large TV on HDMI. The GRUB menu and POST never shows unless I switch off the power to the TV; otherwise the first thing displayed is the login screen.
It's only a minor annoyance as I rarely boot anything else than my main Debian and just flick the power switch for the TV off at the wall if I wish to boot a different OS or enter UEFI setup menu.
“ computer users can be divided into 2 categories:
Those who have lost data
...and those who have not lost data YET ”Remember toBACKUP!
pwzhangzz wrote: ↑2024-01-27 18:38
Everything is good now. Never realized that dp vs hdmi could make such a big difference. Or it could have just been a bad/inadequate hdmi cable? Thanks a whole lot for sharing the experience.