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21 votes
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How to remove old kernel versions?

It is always recommended to leave the 2 latest versions of the kernel, but to remove other kernel versions I used the following commands: dpkg -l | fgrep linux-image- Never remove the kernel shown ...
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13 votes

How to remove old kernel versions?

You can use this one-liner to automatically clean up all old kernels (make sure to restart the computer before doing this if you have just updated the kernel): sudo apt purge $( dpkg --list | grep -P ...
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  • 1,637
12 votes
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How do I install the latest version of VLC media player?

Install from a Repository You can install the latest supported version from the Official PPA. This has the added benefit of being an official build and distribution channel, maintained by VLC ...
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11 votes
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Upgrade elementary to Ubuntu 15.04 'Vivid Vervet'

There are two reasons why it's a very bad idea to upgrade. elementary OS 0.3 (Freya) is based on Ubuntu 14.04 (Trusty). It will almost certainly not work if you were to update to 15.04 - the packages ...
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10 votes
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Update error (sudo apt-get update)

With reference to your other post, you have followed this AU post. To solve the error open terminal and run: sudo add-apt-repository --remove "deb http://archive.canonical.com/ $(lsb_release -sc)...
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  • 7,877
10 votes
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Direct update from Freya to Loki?

According to this tweet from the official elementary OS Twitter account, it won't be possible to directly upgrade. A clean install will be required. See also: Should I download loki beta or freya?
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10 votes
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What is the recommended way to upgrade elementary OS 0.3 Freya to 0.4 Loki?

There continues to be no officially supported way to upgrade between version of elementary OS. This is due to the installer being a patched Ubuntu/Debian installer with no custom elementary support ...
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  • 4,930
10 votes
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How to upgrade from elementary OS 5 to 6?

To my huge surprise, I learnt that the only way to move to a new version is to completely re-install the OS. This does not go well with the line "replacement for Windows and macOS", because ...
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  • 116
9 votes
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How do I update elementary OS when new versions come out?

For the moment is impossible to upgrade from one version to other, the problem is that they are based in the LTS versions of ubuntu and you can't upgrade from LTS to LTS, I don't know if the ...
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  • 468
9 votes
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Loki - Where is the update manager?

You can install manually that program with this : sudo apt-get install software-properties-gtk sudo apt-get install update-manager
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  • 149
9 votes
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What is the recommended way to update from elementary OS Loki 0.4 to Loki 0.4.1?

Step 1. Update Open up AppCentre Navigate to the Updates tab Install all available updates Reboot if required Now your System Settings > About section should look like the following image. Note ...
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  • 4,930
9 votes
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Update from Loki to Juno stable?

While the "suggested" upgrade path is to install Juno from scratch, and if you have your /home as a separate partiton might be the best method to be safe, I've just updated both my PCs with ...
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8 votes
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Is it possible to install a more up-to-date kernel in Freya?

System Recovery If you are now unable to boot, press (or tap) Shift while booting (right after BIOS post screen) to show the GRUB menu. You can choose an older kernel to boot into from the recovery ...
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  • 2,067
8 votes

How to remove old kernel versions?

You can simply run sudo apt-get autoremove to "remove all unused packages" which includes older kernels. You should test a reboot before to be shure the new kernel works! It is more secure to ...
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  • 776
8 votes

I am unable to update or install software in the AppCenter

A fix for this specific issue has just been released in the form of a new packagekit version. If this is not applied automatically, you can do it with the following two commands: sudo apt update sudo ...
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  • 4,930
8 votes

Disable AppCenter dock reminder

To the first question, you can open a terminal and type: killall appcenter Now the reminder dessapears from Planck. To the second question, you can try to show all the hidden startup applications. ...
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  • 2,268
7 votes

Can't login after upgrade

I don't have a crystal ball, but I suppose to look for .Xauthority in your home folder, there might be a permission problem: Press CTRL+ALT+F1 (but if you on mackbook do CTRL+FN+F1) to get to a ...
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  • 1,537
7 votes

Upgrade elementary to Ubuntu 15.04 'Vivid Vervet'

As the answers before were not that clear IMHO, here's an answer: No, do not upgrade to the 15.04 base. Freya is built upon 14.04 LTS and only that. elementary OS' repositories do not even contain ...
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  • 2,872
7 votes

Upgrading Distro from Luna to Freya

There isn't currently a way to upgrade from one release of elementary OS to another. From the release announcement: elementary OS Luna users should back up their data and perform a clean install. ...
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  • 2,131
7 votes

The Cursor Mouse disappears after Lock

A temporary solution is - Go to tty1 with CTRL + ALT + F1 then get back to desktop with CTRL + ALT + F7
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  • 81
7 votes
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Disable AppCenter dock reminder

The AppCenter periodically shows updates because it runs in the background on startup. To disable its notifications, set it to not run on startup: mkdir ~/.config/autostart/ cp /etc/xdg/autostart/io....
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  • 4,224
7 votes

Delay to Start Elementary OS 0.4 Loki (64-bit)

This is a known bug: https://bugs.launchpad.net/elementaryos/+bug/1596377 This is the workaround: Significant lag loading panel and dock after login (Loki) mv /etc/xdg/autostart/at-spi-dbus-bus....
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7 votes

Why is my Elementary OS Not Updating via terminal / Apps are not updating from App Center?

To solve the problem "public key is not available: NO_PUBKEY A74F73EFFE70B91C", import the key: wget -q "http://packages.elementary.io/key.asc" -O- | sudo apt-key add -
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7 votes
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AppCenter can't update Flatpak packages

I have the same situation since yesterday morning. So far I haven't any solution but I found this: According to Hector R on this issue on GitLab Step1 flatpak install org.freedesktop.Platform/...
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  • 96
6 votes

Does elementary receive Debian's security update?

While Ubuntu is derived from Debian, Ubuntu has its own security team. This team is responsible for security updates to land in the Ubuntu software repositories. As elementary OS uses the Ubuntu ...
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  • 2,872
6 votes

Requires installation of untrusted packages in elementary OS

Option 1: To solve this install y-ppa-manager.To install open terminal and run: sudo add-apt-repository ppa:webupd8team/y-ppa-manager sudo apt-get update sudo apt-get install y-ppa-manager Now run ...
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  • 7,877
6 votes

How can I upgrade from the beta to the stable version of elementary OS?

First install the package that provides add-apt-repository if it's not already installed: sudo apt-get install software-properties-common Next, remove elementary OS Beta PPA and replaced it with the ...
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5 votes
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When upgrading hardware, do I need to reinstall elementary OS for hardware recognition?

The only main issue : your video graphic card. If you want to change your graphic card, do not forget to uninstall your driver.
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  • 111
5 votes

Software Update is offering 14.10

I would check Software & Updates, Updates. Where it says: Notify me of new Ubuntu Version: Is it set to Never? or something else? Set it to Never.
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