Ubuntu 19.04 tiempo de arranque muy largo

Ubuntu 19.04 tiempo de arranque muy largo

Me pregunto qué pasa con el tiempo de arranque de mi Ubuntu.
Tengo una computadora reciente, con arranque dual de Windows (i5 de 8.a generación).
¿A qué se refiere la parte del espacio de usuario?

olivbau@olivier-Ubuntu:~$ systemd-analyze blame 
      6.405s NetworkManager-wait-online.service
      5.207s fwupd.service
      5.037s bolt.service
      2.824s plymouth-quit-wait.service
      1.084s systemd-backlight@backlight:intel_backlight.service
      1.032s plymouth-read-write.service
       783ms snapd.service
       720ms dev-nvme0n1p5.device
       627ms systemd-logind.service
       566ms snap-gtk\x2dcommon\x2dthemes-1198.mount
       563ms snap-gnome\x2dcharacters-254.mount
       546ms snap-docker-384.mount
       517ms snap-gnome\x2d3\x2d28\x2d1804-31.mount
       496ms snap-gnome\x2dsystem\x2dmonitor-77.mount
       476ms snap-code-8.mount
       448ms snap-core-6673.mount
       425ms snap-gnome\x2dlogs-61.mount
       416ms snap-core18-941.mount
       382ms systemd-journald.service
       372ms snap-gnome\x2dcalculator-406.mount
       363ms snap-insomnia-30.mount
       354ms dev-loop3.device
       340ms dev-loop1.device
olivbau@olivier-Ubuntu:~$ systemd-analyze critical-chain
The time after the unit is active or started is printed after the "@" character.
The time the unit takes to start is printed after the "+" character.

graphical.target @1min 37.011s
└─multi-user.target @1min 37.011s
  └─kerneloops.service @1min 37.001s +10ms
    └─network-online.target @1min 36.995s
      └─NetworkManager-wait-online.service @1min 30.589s +6.405s
        └─NetworkManager.service @1min 30.509s +75ms
          └─dbus.service @1min 30.494s
            └─basic.target @1min 30.479s
              └─sockets.target @1min 30.479s
                └─snapd.socket @1min 30.477s +1ms
                  └─sysinit.target @1min 30.470s
                    └─systemd-    backlight@backlight:intel_backlight.service @790ms +1.084s
                  └─system-systemd\x2dbacklight.slice @789ms
                    └─system.slice @221ms
                      └─-.slice @221ms


olivbau@olivier-Ubuntu:~$ systemd-analyze
Startup finished in 6.867s (firmware) + 4.795s (loader) + 2.567s (kernel) + 3min 720ms (userspace) = 3min 14.951s 
graphical.target reached after 1min 37.011s in userspace

trama SVG

editar:

 olivbau@olivier-Ubuntu:~$ lsblk | grep -v 'loop'
 NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
 sda           8:0    0 931,5G  0 disk 
 └─sda1        8:1    0 638,6G  0 part 
 nvme0n1     259:0    0 119,2G  0 disk 
 ├─nvme0n1p1 259:1    0   529M  0 part 
 ├─nvme0n1p2 259:2    0   100M  0 part /boot/efi
 ├─nvme0n1p3 259:3    0    16M  0 part 
 ├─nvme0n1p4 259:4    0  86,4G  0 part 
 └─nvme0n1p5 259:5    0  32,2G  0 part /

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