Some unnecessary services are enabled by default in various major Linux releases. For Ubuntu, we can use the method of selective shutdown to accelerate startup and improve system performance. Here we install a software: sudoapt-getinstallsysv-rc-conf and start it like this: sudosysv-rc-conf in this software, you can use the keyboard's arrow key to move and use spaces to select, you can also directly select with the mouse, and then save and exit with q.
Some unnecessary services are enabled by default in various major Linux releases. For Ubuntu, we can use the method of selective shutdown to accelerate startup and improve system performance.
Here we install a software:
Sudo apt-get install sysv-rc-conf
Then start like this:
Sudo sysv-rc-conf
In this software, you can use the keyboard's arrow keys to move and use spaces to select them. You can also use the mouse to select them, and then use q to save and exit. The service names and basic explanations are listed.
Acpi-support: the default value for power support is 1, 2, 3, 4, and 5. I think you can adjust it to s level.
The acpid acpi daemon. The default value is 2-5.
The alsa sound subsystem should not be enabled.
Alsa-utils seems to have replaced alsa, so you can enable it. I can enable it at the S level.
Anacron is a service used to execute a program that has not been executed at the time. I think it doesn't matter, so you can turn it off.
Apmd is also a kind of power management. I think it is not necessary to enable a computer if it is not very old.
Atd is similar to anacron. I shut it down.
Bluez-utiles: the legendary Bluetooth service, and I'm sorry I didn't have it, so I turned it off.
Bootlogd seems to be used to write logs. It may be better to enable it during the security period.
Cron specifies the time to run the program service, so it is better to open.
Cupsys printer service, so if you have it, enable it.
The producer message bus system is very important and must be enabled.
Dns-clean is used for dial-up connections. If not, it is disabled.
In the evms Enterprise Volume management system, I disabled it because I didn't understand what it was called an enterprise volume.
Fetchmail is used for email daemon. I disabled it.
I shut down the table manager for gmtms, and then started gnome with startx.