Hi
I’m using Ubuntu 18.04 LTS release and has installed Nvidia 390.48 drivers via “Additional Drivers” section.
After installing drivers, my Ubuntu boot-up time has increased by over 100% (By more than 15 seconds to 25+ seconds).
In between when there’s a lag for 15+ seconds then my display on monitor turn purple (Purple as on Ubuntu boot-up screen), and then when that lag ends, there’s a “beep” from PC which is similar to the “beep” one hears from PC when the system gets restarted and ONLY then the login screen appears.
Without the drivers, my system boots up in less than 10 seconds and the lag of 15+ seconds with purple screen does not happen. With Nvidia Drivers, the lag happens, and boot up time increases to more than 25 seconds.
I’ve installed my Ubuntu in legacy mode and NOT in UEFI mode due to certain problems that Nvidia drivers was having in UEFI mode in my PC. I’m happt with this.
My PC Specs:
Core i3 4160
12 GB RAM
Gigabyte GA-H81M-S
120 GB Kingston SSD (Ubuntu 18.04 is installed here)
1 TB WD HDD (For storing data, no OS here)
Here’s some info for one to consider (I’ve highlighted the problem parts in ORANGE color) :
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 @27.419s
└─multi-user.target @27.419s
└─getty.target @27.419s
└─getty@tty1.service @27.417s
└─system-getty.slice @27.416s
└─setvtrgb.service @27.410s +5ms
└─systemd-user-sessions.service @1.655s +4ms
└─network.target @1.654s
└─NetworkManager.service @980ms +673ms
└─dbus.service @854ms
└─basic.target @832ms
└─sockets.target @832ms
└─snapd.socket @830ms +2ms
└─sysinit.target @790ms
└─apparmor.service @304ms +485ms
└─local-fs.target @303ms
└─local-fs-pre.target @287ms
└─keyboard-setup.service @167ms +120ms
└─systemd-journald.socket @160ms
└─system.slice @160ms
└─-.slice @158ms
~
:~$ systemd-analyze blame
25.745s lightdm.service
25.744s plymouth-quit-wait.service
25.534s NetworkManager-wait-online.service
7.992s apt-daily.service
2.442s apt-daily-upgrade.service
1.355s dev-sda1.device
771ms dev-loop1.device
684ms dev-loop0.device
683ms fwupd.service
682ms ModemManager.service
673ms NetworkManager.service
649ms dev-loop2.device
639ms dev-loop5.device
618ms snapd.service
611ms dev-loop3.device
597ms udisks2.service
552ms networkd-dispatcher.service
550ms dev-loop4.device
546ms accounts-daemon.service
485ms apparmor.service
466ms networking.service
409ms grub-common.service
376ms alsa-restore.service
279ms polkit.service
270ms apport.service
255ms gpu-manager.service
242ms systemd-resolved.service
240ms systemd-udevd.service
238ms systemd-timesyncd.service
232ms systemd-journal-flush.service
215ms hddtemp.service
186ms avahi-daemon.service
175ms thermald.service
172ms snap-gnome\x2dcharacters-69.mount
161ms rsyslog.service
160ms lm-sensors.service
156ms pppd-dns.service
150ms libvirtd.service
145ms snap-gnome\x2d3\x2d26\x2d1604-59.mount
124ms rtkit-daemon.service
120ms keyboard-setup.service
107ms systemd-logind.service
106ms snap-gnome\x2dlogs-25.mount