To speed up the boot process I disabled on my Leap15.1/KDE laptop the plymouth bootscreen. In YAST the Kernel parameters line now states: “video=1366x768 resume=/dev/disk/by-id/ata-ST9500325AS_6VE5AGBV-part6 plymouth.enable=0 quiet showopts”
But now I see only the black screen with the cursor blinking at the top left during boot until the log-in screen appears. How can I get the text of the boot process to display in a similar manner as when hitting the escape key with the plymouth boot screen?
I see something similar, when I use “plymouth.enable=0”. I do get some boot text, but a lot less than I should see.
I have mostly reverted to omitting the “plymouth.enable=0”, but also omitting the “splash=silent”. Then I get more normal boot text.
I haven’t tried hard, but I think the missing boot text may actually be there. It is just going to the wrong virtual console. If you experiment with CTRL-ALT-Fn you might find it.
The following might be helpful to understand why you might not see text on the screen when the initramfs is being loaded and some messages might be delayed if shown at all. I’m assuming that the behavior described is not unique to Ubuntu, that we likely do something similar inopenSUSE (Yes, I’m guessing)
https://wiki.ubuntu.com/BootGraphicsArchitecture
If you want to see your boot events on screen, it might require enabling plymouth.
It might not improve speed, but I suppose you could disable the splashscreen which should fully direct all output to the display.
I don’t know if you re-direct your output to an alternate or remote console or display might affect performance.
TSU
You would remove “quiet”.
systemd.show_status
Takes a boolean argument or the constant auto. Can be also specified without an argument, with the same effect as a positive boolean. If enabled, the systemd manager (PID 1) shows terse service status updates on the console during bootup. auto behaves like false until a unit fails or there is a significant delay in boot. Defaults to enabled, unless quiet is passed as kernel command line option, in which case it defaults to auto. If specified overrides the system manager configuration file option ShowStatus=, see systemd-system.conf(5). However, the process command line option --show-status= takes precedence over both this kernel command line option and the configuration file option.
https://www.freedesktop.org/software/systemd/man/systemd.html
quiet [KNL] Disable most log messages
https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
I also add “loglevel=4” to make it slightly less verbose.
Thank you, ravas, removing quiet did the trick. I am still used to see the text scrolling past from the time before the splash screen was implemented and I don’t see any reason for this. On my newest laptop running Tumbleweed the SSD is too fast so it goes from the grub screen straight to the login screen. Thank you tsu2 too for the link with the background information.