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I bought my laptop Dell with Ubuntu and it comes with Ubuntu 18.04. How can I update and upgrade to Ubuntu 18.04.3?

Alana Rosário
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    You don't have to do anything. It is automatic. – user68186 Aug 21 '19 at 22:10
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    Possible duplicate of How to install updates via command line?. You can also use the Software Center (GUI package manager) – Nmath Aug 21 '19 at 22:16
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    Go to system settings, click on software and updates, click on updates and check your settings. Should be daily or weekly, and you are good. – crip659 Aug 21 '19 at 22:36
  • The factory version is totally obsolete. The kernel, for example, is 4.15. After I installed for the first time, I did update and upgrade from terminal, but a error happened after restarted my laptop. Just the Ubuntu's background appeared. I couldn't login. – Alana Rosário Aug 21 '19 at 23:16
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    Your machine will upgrade to 18.04.x automatically if you sudo apt full-upgrade or grab all system updates normally. When Ubuntu 20.04.1 is released you'll be offered the choice of moving to 20.04, but as long as you install updates when offered, you'll automatically upgrade from 18.04 to .1, .2, .3, .4, .5 as they become available. 4.15 is the 18.04 kernel unless HWE is enabled. Your last comment is also asking about HWE kernels, but your question doesn't mention that (HWE kernels are only default for 18.04.2 & later installs, need to be enabled for 18.04 & 18.04.1 installs) – guiverc Aug 21 '19 at 23:30
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    Ubuntu 18.04 LTS has the 4.15 kernel by default, it's the stable option. HWE allows 18.04 LTS to use 18.10's, 19.04's, and in the future 19.10's and finally 20.04 LTS's kernel which can be beneficial for later hardware at a very minor (potential) loss of stability (it's been tested in production far less) by enabling HWE or hardware enablement stack kernel - https://wiki.ubuntu.com/Kernel/LTSEnablementStack All security fixes are backported to 4.15 which is deemed the most stable for 18.04 (if this changes, notices will come out, eg 14.04 users were advised to shift to HWE late in it's life) – guiverc Aug 21 '19 at 23:41
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    Possible duplicate of What are point releases in LTS versions? – karel Aug 22 '19 at 00:31

1 Answers1

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The proper way to update is

alt + ctrl + t to open a terminal emulator

sudo apt update

To fetch the database

sudo apt upgrade

To make the actual install

If you want to upgrade to the next version of the system, then the command is

do-release-upgrade

Yvain
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    If I use do-release-upgrade, will the Kernel upgrade too? – Alana Rosário Aug 21 '19 at 23:23
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    Everything will be made to jump to the next version, so if it uses a newer kernel it will get it and install it. If you allready have that kernel it will leave it alone. – Yvain Aug 21 '19 at 23:37