Arch Linux

headkase

Member

Registered: 2011-12-06

Posts: 2,004

Silent shutdown

I've successfully followed the instructions for silent boot:

https://wiki.archlinux.org/index.php/Silent_boot

But I am unable to find any instructions for a silent shutdown/restart.  The reason so is aesthetics, I'm using Plymouth (which works fine) and the boot is perfect but shutdown shows messages and I don't want anything shown.

A pointer to documentation for a silent shutdown/reboot would be appreciated.

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: Silent shutdown

What's your kernel command line?

headkase

Member

Registered: 2011-12-06

Posts: 2,004

Re: Silent shutdown

What's your kernel command line?

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash loglevel=3 vga=current udev.log_priority=3 vt.global_cursor_default=0 nowatchdog"

That line works, although I still do get "watchdog did not stop" messages on shutdown, I haven't removed "nowatchdog" though - even though it doesn't appear to be having the intended effect.

headkase

Member

Registered: 2011-12-06

Posts: 2,004

Re: Silent shutdown

Adding a bit of new information: I set the loglevel and udev.log_priority down to 1 with no effect.  Then set it down to 0, also no effect.

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,426

Website

Re: Silent shutdown

See https://bugs.archlinux.org/task/32673

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Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

headkase

Member

Registered: 2011-12-06

Posts: 2,004

Re: Silent shutdown

See https://bugs.archlinux.org/task/32673

Thanks JWR, if it's an upstream issue then at least I can stop banging my head against it and perhaps some day the darn thing will be "quiet" when told to be. 

W_KIWAN

Member

From: Netherlands

Registered: 2018-02-23

Posts: 28

Re: Silent shutdown

What's your kernel command line?

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash loglevel=3 vga=current udev.log_priority=3 vt.global_cursor_default=0 nowatchdog"

That line works, although I still do get "watchdog did not stop" messages on shutdown, I haven't removed "nowatchdog" though - even though it doesn't appear to be having the intended effect.

According to ArchWiki this is the right way to disable NMI watchdog, however you will get "watchdog did not stop..." messages on shutdown, so what I am doing to get rid of this messages is Blacklisting sp5100_tco module so I have Truly Silent Boot and my kernel command line is

 vt.global_cursor_default=0 nmi_watchdog=0 quiet loglevel=3 rd.systemd.show_status=auto rd.udev.log_priority=3

.

Edit: and Truly Silent Shutdown.

Last edited by W_KIWAN (2018-10-17 02:29:54)

headkase

Member

Registered: 2011-12-06

Posts: 2,004

Re: Silent shutdown

W_KIWAN,

I already have a silent boot.    It's a silent shutdown that's elusive.  Since we have different settings that work for each of us the exact kernel line probably comes down to our specific hardware.