Slow boot time on ssd (~10s dev-sda2.device)

[newtonloquito]

Hi, I have installed xubuntu 21.04 on a new ssd and I have been trying to see how fast can it boot. My pc has a very slow firmware time (nearly 13s, an asus prime a320 motherboard with csm disabled), but the userspace was something like 2 seconds so I still got around 20 secs from pressing the power on button to getting to the desktop. However, I have copied the files that were in my old /home folder from a fedora system that still exists on my secondary drive (an hdd), and after doing that my boot time went up by nearly 10 seconds. When I run systemd-analyze blame it says that the biggest culprit is the "9.438s dev-sda2.device" with sda2 being my root partition on the SSD. I had pretty much the same problem with my hdd, with nearly 10 seconds wasted in mounting the root partition (In neither of both did I separate the home folder onto it's own partition, but if it speeds thing up I might consider doing it). I have disabled fsck for sda2 and the EFI partition since and the boot time even went up, so I will be enabling it again. How can I optimize this? I just have to delete everything and reinstall, create a partition only for the /home folder or should I do something else? Thanks in advance.

[HermanAB]

Well, this is the 21st century. Don’t reboot. Use Hibernate and Suspend, same as with a laptop machine. With a SSD, the machine will awaken instantly.

[newtonloquito]

I think I will, thanks!

[newtonloquito]

Well I runned "systemctl hibernate", the screen glitched and after that i got the same 30 sec boot time as always. Seems like my pc doesn't want to hibernate. I read that for using hibernation I should disable secure boot but my motherboard doesn't have that option (or at least is very hidden). Suspend does work, but with a very unstable power supply I'm not sure that could work for sustained periods of time XD.

[newtonloquito]

I deleted all the stuff I copied from the old hdd and now my boot time is even worse than before, seems like that wasn't the problem

[oldfred]

Have you updated UEFI firmware and SSD firmware to latest available?

Is system doing a fsck on partition when mounting.
Years ago, it ran fsck every 40 reboots. Now with ext4, it just should do a check to see if ext4 has issue.

Some things to review:
Slow Boot --------------------------------
https://ubuntuforums.org/showthread.php?t=2450783
https://ubuntuforums.org/showthread....9#post13932499
https://ubuntuforums.org/showthread.php?t=2417453 &
https://ubuntuforums.org/showthread....2#post13857392 &
https://www.dedoimedo.com/computers/...slow-boot.html
https://askmeaboutlinux.com/2019/11/...-boots-slowly/

[newtonloquito]

Problem solved. I just reinstalled the OS, used the default formatting (before I used custom, although I don't think this is what solved the issue).

[GhX6GZMB]

Well, this is the 21st century. Don’t reboot. Use Hibernate and Suspend, same as with a laptop machine. With a SSD, the machine will awaken instantly.

Not quite.
Actually, a resume from Hibernate is a bit slower than a cold boot. Hibernate will do a cold boot and then restore the session. For Suspend, I agree with you.