Потребовалось много времени для загрузки Ubuntu 18.04LTS

Мой ноутбук (i7 7500U@2.70GHz 16RAM) долго загружается с использованием Ubuntu 18.04 LTS

abhi@abhi-HP-ProBook-450-G4:/etc/initramfs-tools/conf.d$ journalctl(only i have shown errors)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/re
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/re
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/re
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/re
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Field [CAP1] at bit o
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Method parse/executio
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Field [CAP1] at bit offset/length 64/32 exceeds size of target Buffer (64 bits) (20170831/dsopcode-235)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Method parse/execution failed \_SB._OSC, AE_AML_BUFFER_LIMIT (20170831/psparse-550)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Field [CAP1] at bit offset/length 64/32 exceeds size of target Buffer (64 bits) (20170831/dsopcode-235)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Method parse/execution failed \_SB._OSC, AE_AML_BUFFER_LIMIT (20170831/psparse-550)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: PKCS#7 signature not signed with a trusted key
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Exception: Could not find/resolve named package element: PXPR (20170831/dspkginit-381)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Field [CAP1] at bit offset/length 64/32 exceeds size of target Buffer (64 bits) (20170831/dsopcode-235)
Sep 07 22:16:50 abhi-HP-ProBook-450-G4 kernel: ACPI Error: Method parse/execution failed \_SB._OSC, AE_AML_BUFFER_LIMIT (20170831/psparse-550)


abhi@abhi-HP-ProBook-450-G4:~$ 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 @37.374s
 └─multi-user.target @37.373s
   └─kerneloops.service @37.157s +215ms
     └─network-online.target @37.123s
       └─NetworkManager-wait-online.service @29.891s +7.230s
        └─NetworkManager.service @25.504s +4.381s
          └─dbus.service @24.061s
            └─basic.target @23.516s
             └─sockets.target @23.516s
               └─snapd.socket @23.494s +22ms
                 └─sysinit.target @23.435s
                   └─apparmor.service @22.466s +950ms
                     └─local-fs.target @22.465s
                       └─run-user-121.mount @32.096s
                         └─local-fs-pre.target @6.033s
                           └─keyboard-setup.service @2.582s +3.451s
                             └─systemd-journald.socket @2.521s
                               └─system.slice @2.521s
                                 └─-.slice @2.519s


 abhi@abhi-HP-ProBook-450-G4:/etc/initramfs-tools/conf.d$ systemd-analyze blame
     19.418s dev-sda2.device
     17.469s systemd-journal-flush.service
      9.184s systemd-sysctl.service
      8.609s systemd-udevd.service
      7.666s plymouth-start.service
      7.230s NetworkManager-wait-online.service
      6.685s snapd.service
      6.310s plymouth-quit-wait.service
      6.236s ModemManager.service
      6.006s udisks2.service
      5.235s accounts-daemon.service
      4.381s NetworkManager.service
      4.377s dev-loop2.device
      3.944s dev-loop5.device
      3.714s networkd-dispatcher.service
      3.451s keyboard-setup.service
      3.254s networking.service
      3.253s wpa_supplicant.service
      3.097s dev-loop0.device
      3.087s polkit.service
      3.068s dev-loop6.device
      3.033s grub-common.service
      2.961s gpu-manager.service
      2.949s dev-loop4.device
      2.873s dev-loop1.device
      2.736s dev-loop3.device
      2.509s speech-dispatcher.service
      2.423s avahi-daemon.service
      2.387s thermald.service
      2.090s alsa-restore.service
      2.084s rsyslog.service
      1.843s iio-sensor-proxy.service
      1.835s pppd-dns.service
      1.651s bluetooth.service
      1.591s fwupd.service
      1.579s apport.service
      1.501s systemd-logind.service
      1.198s systemd-tmpfiles-setup-dev.service
      1.163s systemd-modules-load.service
      1.139s systemd-backlight@backlight:intel_backlight.service
      1.103s gdm.service
       950ms apparmor.service
       857ms systemd-remount-fs.service
       792ms dev-mqueue.mount
       791ms sys-kernel-debug.mount
       787ms dev-hugepages.mount
       708ms systemd-rfkill.service
       649ms swapfile.swap
       597ms packagekit.service
       518ms snap-gtk\x2dcommon\x2dthemes-319.mount
       464ms systemd-journald.service
       413ms kmod-static-nodes.service
       390ms ufw.service
       383ms colord.service
       379ms systemd-timesyncd.service
       361ms snap-gnome\x2dsystem\x2dmonitor-51.mount
       343ms snap-gnome\x2dcalculator-180.mount
       340ms systemd-resolved.service
       309ms snap-gnome\x2d3\x2d26\x2d1604-70.mount
       280ms bolt.service
       277ms snap-gnome\x2dcharacters-103.mount
       261ms snap-gnome\x2dlogs-37.mount
       258ms systemd-fsck@dev-disk-by\x2duuid-6761\x2d9723.service
       250ms snap-core-4917.mount
       226ms upower.service
       215ms kerneloops.service
       210ms console-setup.service
       174ms systemd-user-sessions.service
       174ms systemd-random-seed.service
       161ms systemd-tmpfiles-setup.service
       156ms systemd-update-utmp.service
       131ms setvtrgb.service
       122ms systemd-tmpfiles-clean.service
       105ms snapd.seeded.service
        86ms dns-clean.service
        67ms boot-efi.mounts
        62ms plymouth-read-write.service
        53ms systemd-udev-trigger.service
        39ms rtkit-daemon.service
        34ms user@1000.service
        26ms user@121.service
        22ms snapd.socket
        13ms systemd-update-utmp-runlevel.service
         6ms ureadahead-stop.service
         5ms nvidia-persistenced.service
         2ms sys-kernel-config.mount
         2ms sys-fs-fuse-connections.mount

  abhi@abhi-HP-ProBook-450-G4:~$ systemd-analyze time
  Startup finished in 5.022s (firmware) + 11.520s (loader) + 6.884s (kernel)    + 37.390s (userspace) = 1min 817ms
   graphical.target reached after 37.374s in userspace