5mo ago

LInux mint takes long (1:50min) to boot on a new system

Update: It was a usb 3 hub that did not work with linux. plugging it into a usb2 port on the pc improved boot time. its now 25 sec!

Hi there! So i build a new pc with hardware < year old and installed mint on it and it takes annoyingly long to boot, 1:50min from the output of systemd-analyze:

    ~~~
Startup finished in 14.075s (firmware) + 10.681s (loader) + 51.070s (kernel) + 34.573s (userspace) = 1min 50.400s 
graphical.target reached after 34.570s in userspace.
~~~

The 50sec on kernel boot seems strange to me, maybe 34sec of userspace as well.

It seems to be the systemd-usdev-settle.service according to the output of systemd-analyze blame:

    ~~~
29.451s systemd-udev-settle.service
 3.254s NetworkManager-wait-online.service
  948ms zfs-load-module.service
  491ms NetworkManager.service
  154ms blueman-mechanism.service
~~~

The output of systemctl status systemd-udev-settle.service shows:

    ~~~
systemd-udev-settle.service - Wait for udev To Complete Device Initialization
     Loaded: loaded (/usr/lib/systemd/system/systemd-udev-settle.service; static)
     Active: active (exited) since Wed 2025-01-22 12:06:16 CET; 5min ago
       Docs: man:systemd-udev-settle.service(8)
   Main PID: 526 (code=exited, status=0/SUCCESS)
        CPU: 2ms

Jan 22 12:05:47 tower systemd[1]: Starting systemd-udev-settle.service - Wait for udev To Complete Device Initialization...
Jan 22 12:05:47 tower udevadm[526]: systemd-udev-settle.service is deprecated. Please fix zfs-load-module.service, zfs-import-cache.service not to pull it in.
Jan 22 12:06:16 tower systemd[1]: Finished systemd-udev-settle.service - Wait for udev To Complete Device Initialization.

~~~

So i think i need to fix the zfs modules, because they slow udev down, but how?

Any other tips to improve boot time of my system? Ubuntu on my 4 yo laptop takes maybe 20-30 seconds to boot, so linux should be a lot faster. I appreciate any helpl!