Add xfce4 notes and configuration

Readme.md

@@ -8,6 +8,13 @@ vagrant ssh devbox
 cd /vagrant
 ansible-playbook playbook.yml --connection=local -i devbox, -e ansible_become=true
 
+# Graphics card issues
+Issues with nvidia graphics card (NVIDIA Corporation GK106GLM [Quadro K2100M]).
+* Use latest virtualbox / vagrant
+* Use proprietary nvidia driver if nvidia graphics card present
+* Enable 3d acceleration
+* Use xfce4-session instead of gnome-session
+
 # base boxes
 * geerlingguy https://app.vagrantup.com/geerlingguy
   * gerlingguy/debian10 (https://github.com/geerlingguy/packer-debian-10)

Vagrantfile

@@ -30,8 +30,10 @@ Vagrant.configure("2") do |config|
     config.proxy.no_proxy = ENV["no_proxy"]
   end
 
-  # requires additional vagrant plugin vagrant-disksize
-  config.disksize.size = "20GB"
+  # configure disksize
+  if Vagrant.has_plugin?("vagrant-disksize")
+    config.disksize.size = "20GB"
+  end
 
   # configure VM settings and additional disks
   config.vm.provider "virtualbox" do |vb|
@@ -42,7 +44,8 @@ Vagrant.configure("2") do |config|
     # https://www.virtualbox.org/manual/ch08.html
     vb.customize ["modifyvm", :id, "--vram", "128"]
     vb.customize ["modifyvm", :id, "--graphicscontroller", "vboxvga"]
-    vb.customize ["modifyvm", :id, "--accelerate3d", "off"]
+    vb.customize ["modifyvm", :id, "--accelerate3d", "on"]
+    vb.customize ["modifyvm", :id, "--accelerate2dvideo", "on"]
 
     # Adding a SATA controller that allows 4 hard drives
     unless File.exist?(DISKS[0]["name"] + ".vmdk")

handlers/main.yml

+- name: restart login manager service
+  service: name="{{ xfce4_login_manager_service }}" state="restarted"

playbook.yml

+#!/usr/bin/env ansible-playbook
 ---
 - name: playbook
   hosts: devbox
@@ -13,3 +14,6 @@
   - {role: "geerlingguy.docker", docker_users: ["vagrant"], tags: "docker"}
   - {role: 'jetbrains_installer', tags: ['jetbrains']}
   - {role: 'webofmars.xfce4-desktop', tags: ['desktop']}
+  post_tasks:
+    - import_tasks: tasks/xfce4_configuration.yml
+      tags: desktop_config

tasks/xfce4_configuration.yml

+- name: Use xfce4-session by default
+  # shell: "update-alternatives --install /usr/bin/x-session-manager x-session-manager /usr/bin/xfce4-session 60"
+  shell: "update-alternatives --set x-session-manager /usr/bin/xfce4-session"
+  register: _shell_output
+  changed_when: _shell_output.rc == 0 and _shell_output.stdout != ""
+
+- name: restart login manager service
+  #service: name="{{ xfce4_login_manager_service }}" state="restarted"
+  service: name="gdm" state="restarted"
+  when: _shell_output.changed
+