Ubuntu - Revision history

Hdridder: /* NetworkManager */

2026-01-07T21:48:21Z

NetworkManager

← Older revision		Revision as of 21:48, 7 January 2026
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	===NetworkManager===		===NetworkManager===

	[[NetworkManager]] is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex. ~~You may need to install~~ ifupdown ~~and disable the netplan thing to achieve this~~.		[[NetworkManager]] is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex.
	* sudo apt-get purge network-manager
	* ~~Uninstall dhcpcd~~		* Make sure you have ifupdown installed
	* Uninstall openresolv		* Edit /etc/network/interface. See [[Networking#Interfaces]].
			* <code>sudo apt-get purge network-manager</code>
			* If installed uninstall openresolv
	These 2 needed to be done on a raspberry pi running debian buster		These 2 needed to be done on a raspberry pi running debian buster
	* uninstall wicd		* uninstall wicd

2026-01-07T19:43:13Z

← Older revision		Revision as of 19:43, 7 January 2026
Line 13:		Line 13:
	===NetworkManager===		===NetworkManager===

	NetworkManager is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex. You may need to install ifupdown and disable the netplan thing to achieve this.		[[NetworkManager]] is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex. You may need to install ifupdown and disable the netplan thing to achieve this.
	* sudo apt-get purge network-manager		* sudo apt-get purge network-manager
	* Uninstall dhcpcd		* Uninstall dhcpcd

2025-06-08T13:14:02Z

Application management

← Older revision		Revision as of 13:14, 8 June 2025
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	;apt full-upgrade		;apt full-upgrade
	:Update the package meta-data and update all		:Update the package meta-data and update all
			;apt-mark hold <package>
			:Prevent updates of <package>, they will be show as upgradable by <code>apt update</code> but will be held back by <code>apt (full-)upgrade</code>
			;apt-mark unhold <package>
			:Allow updates on <package> again
			;apt-mark showhold
			:SHow all packages that are held back

	;apt-get autoclean		;apt-get autoclean

2025-04-19T20:25:54Z

apt update reports NO PUBKEY

← Older revision		Revision as of 20:25, 19 April 2025
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	<code>gpg --export [KEY_ID] \| sudo tee /etc/apt/keyrings/ubuntu.gpg </code>		<code>gpg --export [KEY_ID] \| sudo tee /etc/apt/keyrings/ubuntu.gpg </code>

	In /apt/sources.d/xxxxx.list make sure 'Signed By' points to the .gpg file		In /apt/sources.d/xxxxx.list make sure 'Signed By' points to the .gpg file or to have '[signed-by=/etc/apt/keyrings/ubuntu.gpg]' when you have a 1-line source file


			The same thing works for Debian too. I would expect Debian a keyserver of its own but I've not found it yet.

	===Add applications===		===Add applications===

2025-04-16T19:08:48Z

Application management

← Older revision		Revision as of 19:08, 16 April 2025
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	====apt update reports NO PUBKEY====		====apt update reports NO PUBKEY====
	When apt update reports things like: "The following signatures couldn't be verified because the public key is not available: NO_PUBKEY [KEY_ID]" you can ~~fetch~~ the ~~key like~~:		When apt update reports things like: "The following signatures couldn't be verified because the public key is not available: NO_PUBKEY [KEY_ID]" you can repair as described on linuxblog.io[https://linuxblog.io/how-to-fix-gpg-no_pubkey-error-the-following-signatures-couldnt-be/]:

	<code>gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys [KEY_ID]</code>		<code>gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys [KEY_ID]</code>

2025-04-16T19:05:09Z

Application management

@@ Line 95: / Line 95: @@
 ;dpkg -i <packagefile>
 :Install from the packagefile
 ===Add applications===

2024-03-18T09:07:14Z

Snap

← Older revision		Revision as of 09:07, 18 March 2024
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	</syntaxhighlight>		</syntaxhighlight>

	When using this anyhow. Some snaps (like firefox) may send daily warnings an update is pending. For some reason this does not happen automatically and you need to execute <code>sudo snap refresh</code> to do the update		When using this anyhow. Some snaps (like firefox) may send daily warnings an update is pending. For some reason this does not happen automatically and you need to execute <code>sudo snap refresh</code> to do the update.

			The snap-store cannot be updated from the ubuntu software catalog as the process is running always. To update:<br>
			<code>snap-store --quit && sudo snap refresh snap-store</code>

	===Settings GUI===		===Settings GUI===

2023-09-29T20:50:01Z

NetworkManager

← Older revision		Revision as of 20:50, 29 September 2023
Line 14:		Line 14:

	NetworkManager is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex. You may need to install ifupdown and disable the netplan thing to achieve this.		NetworkManager is a bad idea, just use <code>/etc/network/[[Networking#Interfaces\|interfaces]]</code> and /etc/resolv.conf to configure your network. Having a DHCP server to supply network configuration is fine, everything else is making things complex. You may need to install ifupdown and disable the netplan thing to achieve this.
			* sudo apt-get purge network-manager
	* Uninstall dhcpcd		* Uninstall dhcpcd
	* Uninstall openresolv		* Uninstall openresolv

2023-09-19T19:28:44Z

Application management

← Older revision		Revision as of 19:28, 19 September 2023
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	;do-release-upgrade		;do-release-upgrade
	:Upgrade to the latest Ubuntu release, latest LTS if that is what you run.		:Upgrade to the latest Ubuntu release, latest LTS if that is what you run.

			;dpkg -i <packagefile>
			:Install from the packagefile

	===Add applications===		===Add applications===

2023-09-03T11:50:20Z

Modfications made

← Older revision		Revision as of 11:50, 3 September 2023
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	# If /var/log/syslog is full of messages like '<code>failed to bind to /tmp/.X11-unix/X....</code>', make sure / is owned by root.		# If /var/log/syslog is full of messages like '<code>failed to bind to /tmp/.X11-unix/X....</code>', make sure / is owned by root.
	# Check [[Networking#Interfaces]] for allow-hotplug		# Check [[Networking#Interfaces]] for allow-hotplug


	===Tracker===		===Tracker===
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	apt purge nautilus		apt purge nautilus
	apt install thunar		apt install thunar

			===Get a visible border on the gnome terminal===
			vi .config/gtk-3.0/gtk.css

			terminal-window notebook {
			border-width: 0px 1px 1px 1px;
			border-style: solid;
			border-color: grey;
			}

			terminal-window.maximized notebook,
			terminal-window.fullscreen notebook {
			border-style: none;
			}

	==Application management==		==Application management==