yavdr-ansible/roles/yavdr-xorg/tasks/detect-xorg.yml

---
# file: roles/yavdr-xorg/tasks/detect-xorg.yml

- name: "expand template for x-verbose@.service"
  template:
    src: "templates/systemd/system/x-verbose@.service.j2"
    dest: "/etc/systemd/system/x-verbose@.service"

- name: "expand template for xorg-verbose.conf"
  template:
    src: "templates/xorg-verbose.conf.j2"
    dest: "/etc/X11/xorg-verbose.conf"

- name: "remove intel snippet"
  file:
    path: /etc/X11/xorg.conf.d/20-intel.conf
    state: absent

- name: Stop VDR
  systemd:
    name: vdr.service
    state: stopped
    enabled: yes
  notify: ['Start VDR']

- name: Stop yavdr-xorg
  systemd:
    name: 'yavdr-xorg'
    state: stopped
    enabled: yes
  notify: ['Start yavdr-xorg']

- name: Stop xlogin
  systemd:
    name: 'xlogin@{{ vdr.user }}.service'
    state: stopped
  notify: ['Start xlogin']

- name: Stop x
  systemd:
    name: x@vt7.service
    state: stopped

- name: check if a nvidia driver has been installed
  set_fact:
    nvidia_driver_installed: '{{ "nvidia" in lookup("file", "/etc/yavdr/autoinstalled") }}'

- name: unload nouveau driver, replace with nvidia
  block:
    - name: unbind vconsole
      shell: echo 0 > /sys/class/vtconsole/vtcon1/bind

    - name: "wait a little, so noveau isn't used anymore"
      wait_for:
        timeout: 1

    # unloading the drivers using the modprobe module does not work for some strange reason...
    - name: unload kms drivers
      rmmod:
        name: '{{ item }}'
      loop:
        - nouveau
        - ttm
        - drm_kms_helper
        - drm

    - name: load nvidia driver
      modprobe:
        name: "nvidia"
        state: present

    - name: "wait a little before starting nvidia-persistenced"
      wait_for:
        timeout: 1

    - name: start nvidia-persistenced
      systemd:
        name: "nvidia-persistenced"
        state: started
        enabled: true
        masked: false
        daemon_reload: true
  when:
    - nvidia_detected
    - nvidia_driver_installed
    - '"nouveau" in modules'

- name: "start x-verbose@.service"
  systemd:
    name: "x-verbose@vt7.service"
    state: started
    enabled: false
    masked: false
    daemon_reload: true

- name: "wait a little, so X has some time to start up"
  wait_for:
    timeout: 3

- name: "detect xorg configuration"
  xrandr_facts:
    preferred_refreshrates: '{{ preferred_refreshrates }}'
    preferred_resolutions: '{{ preferred_resolutions }}'
    preferred_outputs: '{{ preferred_outputs }}'

- debug:
    var: xorg.primary

- debug:
    var: xorg.secondary
  when: xorg.secondary is defined

- debug:
    var: drm
  when: drm is defined

- name: "stop x-verbose@vt7.service"
  systemd:
    name: "x-verbose@vt7.service"
    state: stopped
    enabled: false
    masked: true

#- name: "wait a little bit, so X has some time to shut down (needed?)"
#  wait_for:
#    timeout: 3

- name: save results
  block:
    - name: ensure facts.d directory exists
      file:
        state: directory
        path: /etc/ansible/facts.d

    - name: write xorg variable as local fact
      copy:
        content: '{{ {"xorg": xorg} | to_nice_json }}'
        dest: /etc/ansible/facts.d/xorg.fact

    - name: write xrandr variable as local fact
      copy:
        content: '{{ {"xrandr": xrandr} | to_nice_json }}'
        dest: /etc/ansible/facts.d/xrandr.fact

    - name: write drm variable as local fact
      copy:
        content: '{{ {"drm": drm} | to_nice_json }}'
        dest: /etc/ansible/facts.d/drm.fact
  when:
    - xrandr is defined
    - xorg is defined
    - drm is defined

- name: update xorg, xrandr and drm variables with values from local facts if needed
  set_fact:
    xorg: '{{ ansible_local.xorg.xorg }}'
    xrandr: '{{ ansible_local.xrandr.xrandr }}'
    drm: '{{ ansible_local.drm.drm }}'
  when:
    - xrandr is undefined
    - xorg is undefined
    - drm is undefined

# TODO: expand template for xorg.conf (or snippets)
#       with respect for the available graphics card driver
#       nvidia, noveau, intel, radeon

- name: nvidia related config
  block:
  - name: create xorg.conf (for nvidia driver)
    template:
        src: templates/xorg.conf.j2
        dest: /etc/X11/xorg.conf
        backup: yes
  when:
    - nvidia_detected

- name: intel xorg config snippet
  template:
    src: templates/20-intel.conf.j2
    dest: /etc/X11/xorg.conf.d/20-intel.conf
  when:
    - intel_detected and not nvidia_detected

- name: server flags config snippet to disable screen blanking
  template:
    src: templates/10-serverflags.conf.j2
    dest: /etc/X11/xorg.conf.d/10-serverflags.conf