POWER OFF COMMAND DOES NOT WORK on 22.04

Question

2 issues impacting basic Linux features:

First issue: Since I've upgraded to 22.04 my 2 NUCs, (from 18.04 and 20.04) both of them are unable to be powered-off by the command line. Neither the command

sudo poweroff

nor the command

sudo shutdown -P now

are doing the job. The NUC are always rebooting instead. The only 2 ways to switch them off is

unplug the powercord
USE the windows manager GUI command (upper button on the right corner of Standard 22.04 windows manager.

2nd Issue: GRUB_TIMEOUT delay parameter placed into /etc/default/grub does not have any effect (Grub 2.06)!

As these 2 NUC should host network services and virtualization, they are not supposed to get windows manager but just a ssh services. Please can you help me to find a fix. Power off and shutdown are basics for many decades!

Please don't ask the same question again and again. 22.04 Server automatically reboots after sudo shutdown -P now or with sudo power off instruction — user68186, Oct 06 '22 at 12:25
Check your UEFI settings. Power State set to Always-on will automatically power-on if a usb adapter is connected. When changing grub.cfg does not take effect, maybe grub is using some other root than you expect -- could you have some other root which really controls the grub menu? — ubfan1, Oct 23 '22 at 00:44

Giorgos Saridakis · Answer 1 · 2022-10-06T12:21:23.683

0

Keep calm :)

shutdown -h now

This will effectively halt your system.

As for the Grub timeout, after you have edited/etc/default/grub

sudo update-grub

Is required to notify the bootloader about your changes.

Good luck!

edited Oct 06 '22 at 12:21

answered Oct 06 '22 at 12:01

Giorgos Saridakis

736

score 0 · Answer 2 · answered Oct 23 '22 at 00:20

history | grep grub reports:

1797  sudo vi /etc/default/grub && sudo update-grub
1821  sudo vi /etc/default/grub && sudo update-grub

shutdown -h now is not running better than poweroff cmdline, my parameters are:

GRUB_DEFAULT=0
#GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
Uncomment to enable BadRAM filtering, modify to suit your needs
This works with Linux (no patch required) and with any kernel that obtains
the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
The resolution used on graphical terminal
note that you can use only modes which your graphic card supports via VBE
you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
GRUB_GFXMODE=3840x2160x32,3840x2160x24,3840x2160,1920x1080x32,1920x1080x24,1920x1080x16,1920x1080,1280x1024,1024x768x32,1024x768x24,1024x768x16,1024x768,800x600,640x480
Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"
Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

This is not an answer. You should place such additional information into your original posting. — ubfan1, Oct 23 '22 at 00:29

POWER OFF COMMAND DOES NOT WORK on 22.04

2 Answers2

Uncomment to enable BadRAM filtering, modify to suit your needs

This works with Linux (no patch required) and with any kernel that obtains

the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)

Uncomment to disable graphical terminal (grub-pc only)

The resolution used on graphical terminal

note that you can use only modes which your graphic card supports via VBE

you can see them in real GRUB with the command `vbeinfo'

Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux

Uncomment to disable generation of recovery mode menu entries

Uncomment to get a beep at grub start