Update Linux Mint docs

scripts/vms/README.md

@@ -10,12 +10,16 @@ This folder contains directories making use of [Vagrant](https://www.vagrantup.c
     - Windows: `winget install -e --id Oracle.VirtualBox`
 2. [Install Vagrant](https://developer.hashicorp.com/vagrant/install?product_intent=vagrant)
     - Windows: `winget install  -e --id Hashicorp.Vagrant`
+3. [Install Vagrant Virtual Box Guest Additions Plugin](https://subscription.packtpub.com/book/cloud-and-networking/9781786464910/1/ch01lvl1sec12/enabling-virtualbox-guest-additions-in-vagrant).
+   This helps ensururing that the guest additions of each box are automatically updated.
+    - `vagrant plugin install vagrant-vbguest`
 
 ### Setup VM
 
 1. `cd` into `{vmdir}`, e..g, `cd ubuntu`
 2. Start the vm `vagrant up`
-3. Linux machines: Store ssh configuration: `vagrant ssh-config > default`
+3. Restart the vm
+4. Linux virtual machines: Store ssh configuration: `vagrant ssh-config > vagrant-ssh`
 
 ### Use VM
 
@@ -24,6 +28,20 @@ On Linux, you can also do `ssh -Y -F vagrant-ssh default` to SSH into the machin
 
 If asked for a password, this is `vagrant`.
 
+#### Multiple Screens
+
+One can configure mulitple screen as the virtual machine settings of Virtual Box:
+Navigate to "Display" (1), set "Video Memory" to the maximum value (2), and then adjust the number of displays (3).
+
+![Virtual Box settings for multiple screens at VM settings](virtualbox-multiple-screens-1.png)
+
+In case you want to have a fixed resoltuion, one can pin the screen resolution as follows:
+During running of Virutal Box,
+(1) unselect "Auto-size Guest Display" and
+(2) adjust the screen resolution to full HD
+
+![Virtual Box settings for multiple screens at running VM](virtualbox-multiple-screens-1.png)
+
 ### Remove VM
 
 Execute `vagrant destroy`.
@@ -48,3 +66,16 @@ Solution: Delete folder `C:\Users\$username\VirtualBox VMs\jabref-ubuntu`
 
 Solution: `snap refresh --edge jabref` (or `--stable`, ...).
 More info on snaps is available at <https://snapcraft.io/docs/quickstart-tour>.
+
+> `An error occurred during installation of VirtualBox Guest Additions 7.0.20. Some functionality may not work as intended.`
+
+Install the guest additions manually by "Devices" > "Install Virtual Box Gueat Additions".
+
+> I get a strange installation error.
+
+Look at <https://stackoverflow.com/a/78040474/873282>.
+
+> How can I update the guest additions?
+
+They should be automatically updated during a reboot.
+A manual update can be triggered by `vagrant vbguest --do install`.

scripts/vms/linux-mint-cinnamon/README.md

@@ -2,15 +2,26 @@
 
 [Linux Mint](https://linuxmint.com/) with JabRef snap and libreoffice-connection pre-installed.
 
-Uses <https://portal.cloud.hashicorp.com/vagrant/discover/aaronvonawesome/linux-mint-21-cinnamon>.
+Uses <https://app.vagrantup.com/archman/boxes/linuxmint/versions/22>.
 
 Start JabRef by following steps:
 
 - 1. Open termminal
 - 2. `cd jabref`
 - 3. `./gradlew run`
 
-## Alternative
+## Alternatives
+
+### Using `archman/linuxmint`
+
+This image does not work with multiple monitors.
+
+Issues
+
+- [VirtualBox: Mouse pointer offset](https://forums.linuxmint.com/viewtopic.php?t=427855)
+- [VirtualBox 3D acceleration: blank screen](https://forums.linuxmint.com/viewtopic.php?t=427853)
+
+### Building an own image
 
 We could have build our own image.
 First creating an image using packer with <https://github.com/rmoesbergen/packer-linuxmint>.

scripts/vms/linux-mint-cinnamon/Vagrantfile

@@ -5,7 +5,7 @@ Vagrant.configure("2") do |config|
 
   # https://portal.cloud.hashicorp.com/vagrant/discover/aaronvonawesome/linux-mint-21-cinnamon
   config.vm.box = "aaronvonawesome/linux-mint-21-cinnamon"
-  config.vm.box_version = "4.0.1"
+  # config.vm.box = "archman/linuxmint" # v22
 
   config.vm.network :forwarded_port, guest: 80, host: 8080, auto_correct: true
 
@@ -16,9 +16,20 @@ Vagrant.configure("2") do |config|
   end
 
   config.vm.provision "shell", inline: <<-SHELL
+    sudo apt-get update
+    sudo apt-get -y upgrade
+
+    # enable building of the virtual box guest addons
+    # hint from https://forums.virtualbox.org/viewtopic.php?p=508680&sid=fe86fb0f6c03c7443f1fba9a5c29a861#p508680
+    sudo apt install -y build-essential dkms
+
+    # switch kernel - hint by https://askubuntu.com/a/1521872/196423
+    sudo apt install -y linux-oem-22.04 linux-tools-oem-22.04
+
     sudo apt-get install -y git
   SHELL
 
+  # Install JDK, clone JabRef's source code, and do an initial build
   config.vm.provision "shell", privileged: false, inline: <<-SHELL
     curl -s "https://get.sdkman.io" | bash
     source "$HOME/.sdkman/bin/sdkman-init.sh"