Disable screen blanking by default via xorg configuration snippet

Further changes:
- add ppa:yavdr/experimental-kodi for KODI 18
- add set-kodi-display script to allow switching DISPLAY in dual
screen configuration (inkompatible with KODI 17)
This commit is contained in:
Alexander Grothe 2019-02-04 17:57:34 +01:00
parent 4a2f644bb3
commit 65e2ac1e5f
8 changed files with 238 additions and 7 deletions

View File

@ -343,8 +343,8 @@ ppa_owner: 'ppa:yavdr'
repositories:
- '{{ ppa_owner }}/{{branch}}-main'
- '{{ ppa_owner }}/{{branch}}-vdr'
- '{{ ppa_owner }}/{{branch}}-kodi'
#- '{{ ppa_owner }}/{{branch}}-yavdr'
#- '{{ ppa_owner }}/{{branch}}-kodi'
#+END_SRC
** VDR user, directories, special configuration and plugins
:PROPERTIES:
@ -1829,7 +1829,7 @@ ctl.!default {
:PROPERTIES:
:ID: 3f614f9c-c24b-4450-82ff-5c3fe103e695
:END:
The X-Server is started by using the two systemd units ~xlogin@.service~ and ~x@.service~ provided by the package *xlogin*. The former is enabled (and started) for the vdr user - which results (using the default settings for the user *vdr* with the uid *666*) in the activation of ~xlogin@vdr.service~ when reaching the graphical.target. To simplify starting and stopping the X-server and the desktop session a ~yavdr-xorg.service~ is provided by the package ~yavdr-xorg~, which depends on the two units mentioned before.
The X-Server is started by using the two systemd units ~xlogin@.service~ and ~x@.service~ provided by the package *xlogin*. The former is enabled (and started) for the vdr user - which results (using the default settings for the user *vdr* with the uid *666*) in the activation of ~xlogin@vdr.service~ when reaching the graphical.target. To simplify starting and stopping the X-server and the desktop session a ~yavdr-xorg.service~ is provided by the package ~yavdr-xorg~, which depends on the two units mentioned before.
~x@vt7.service~ is started automatically as a dependency of ~xlogin@vdr.service~ and starts the X-server. ~xlogin@vdr.service~ also starts a systemd user session using ~user@666.service~.
In order to use the keyboard layout configured during installation for the X-Server the script ~write-x11-keyboard-config~ reads the keyboard configuration from ~/etc/default/keyboard~ when starting ~x@.service~ and writes the file ~/etc/X11/xorg.conf.d/00-keyboard.conf~ (because systemd for Ubuntu (and Debian) has been patched not to create ~/etc/X11/xorg.conf.d/00-keyboard.conf~ according to the ~localectl~ settings).
@ -2578,6 +2578,10 @@ preferred_refreshrates:
when:
- intel_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
#+END_SRC
**** intel.yml
:PROPERTIES:
@ -3071,6 +3075,17 @@ Section "Screen"
EndSection
{% endif %}
#+END_SRC
***** snippet to disable screen blanking
#+BEGIN_SRC conf :tangle roles/yavdr-xorg/templates/10-serverflags.conf.j2
{{ ansible_managed | comment }}
Section "ServerFlags"
Option "NoPM" "true"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
EndSection
#+END_SRC
**** vdr
:PROPERTIES:
:ID: 748ef799-1673-4028-b52e-234328dc793b
@ -5325,7 +5340,8 @@ end
# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
map to guest = bad user
map to guest = bad password
guest account = nobody
{% if samba.windows_compatible %}
# disable unix extensions and enable following symlinks
@ -6010,6 +6026,106 @@ install serial_ir setserial /dev/{{serial_ir_device}} uart none; /sbin/modprobe
:END:
This systemd unit for the user session starts (and stops) kodi.
#+INCLUDE: "roles/kodi/templates/kodi.service.j2" src conf
**** set-kodi-diplay
This is a version-dependent script to force KODI to use the display set by the environment variable ~DISPLAY~. The following Version is intended for KODI 18.
#+BEGIN_SRC jinja2 :tangle roles/kodi/templates/set-kodi-display.j2 :padline no
#!/usr/bin/env python3
"""
{{ ansible_managed }}
This Script changes the monitor in KODI's guisettings.xml to the wanted output
according to the DISPLAY environment variable. It works with KODI 18 (not KODI 17!).
"""
import os
import sys
import subprocess
import xml.etree.ElementTree as ET
GUISETTINGS = '/var/lib/vdr/.kodi/userdata/guisettings.xml'
CACHE_DIR = '/var/lib/vdr/.kodi/.display_cache'
VIDEOSCREEN_TEMPLATE = """<settings version="2">
<setting id="videoscreen.monitor" default="true">{}</setting>
</settings>"""
def get_output_names():
"""
get display name from xrandr output for given DISPLAY environment variable
"""
xrandr_output = [
l for l in subprocess.check_output(
["xrandr"],
env={"DISPLAY": os.environ["DISPLAY"]}
).decode("utf-8").splitlines()
]
return [l.split()[0] for l in xrandr_output if " connected " in l]
def parse_template(template_path, template, output=""):
"""read videoscreen settings from backup or create a stub file"""
try:
xml_tree = ET.parse(template_path)
except FileNotFoundError:
print("{} not found, creating stub file".format(template_path))
xml_template = ET.fromstring(template.format(output))
xml_tree = ET.ElementTree(xml_template)
finally:
xml_tree.write(template_path)
return xml_tree
def backup_videoscreen():
"""parse guisettings.xml for display name an backup videoscreen data"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, "Default")
root = tree.getroot()
videoscreen = root.find("./setting[@id='videoscreen.monitor']")
output = videoscreen.text
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
base_tree = ET.fromstring('<settings version="2"></settings>')
xml_tree = ET.ElementTree(base_tree)
backup_root = xml_tree.getroot()
backup_root.insert(0, videoscreen)
xml_tree.write(xml_path)
print("written backup for {} to {}".format(output, xml_path))
def change_videoscreen(output, new_videoscreen):
"""change videoscreen node to content of backup file"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, output)
root = tree.getroot()
videoscreen = root.find('./setting[@id="videoscreen.monitor"]')
if videoscreen is not None:
videoscreen.text = new_videoscreen.text
else:
videoscreen = root.find("./settings")
root.insert(0, new_videoscreen)
tree.write(GUISETTINGS)
return tree
if __name__ == '__main__':
output = get_output_names()[0]
if not output:
sys.exit("Error: no screen name found")
try:
os.makedirs(CACHE_DIR, exist_ok=True)
except PermissionError:
sys.exit("Error: insufficient permissions to create cachedir {}".format(
CACHE_DIR))
try:
backup_videoscreen()
except FileNotFoundError:
print("{} does not exist".format(GUISETTINGS))
except Exception as e:
print("Could not backup videoscreen.monitor:", str(e))
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
videodir_xml = parse_template(xml_path, VIDEOSCREEN_TEMPLATE, output)
videodir_root = videodir_xml.getroot()
new_videoscreen = videodir_root.find("./setting[@id='videoscreen.monitor']")
guisettings_xml = change_videoscreen(output, new_videoscreen)
#+END_SRC
*** files
:PROPERTIES:
:ID: 58c5c693-bd24-420a-bfed-79771e8e0d47

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@ -7,8 +7,8 @@ ppa_owner: 'ppa:yavdr'
repositories:
- '{{ ppa_owner }}/{{branch}}-main'
- '{{ ppa_owner }}/{{branch}}-vdr'
- '{{ ppa_owner }}/{{branch}}-kodi'
#- '{{ ppa_owner }}/{{branch}}-yavdr'
#- '{{ ppa_owner }}/{{branch}}-kodi'
# properties of the user vdr and vdr-related options
# NOTE: user name, uid and confdir must match the values set by the vdr package
vdr:

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@ -35,4 +35,9 @@
group: '{{ vdr.group }}'
mode: "0664"
force: no
# TODO: Add configuration files
- name: expand template for set-kodi-display
template:
src: 'templates/set-kodi-display.j2'
dest: '/usr/bin/set-kodi-display'
mode: "0755"

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@ -9,4 +9,4 @@ ExecStart=/usr/bin/kodi -l /run/lirc/lircd
ExecStop=/bin/bash -c "/usr/bin/kodi-send --action=QUIT; while ps -p $MAINPID -o comm=; do sleep .25; done"
TimeoutStopSec=10
SuccessExitStatus=0 127 SIGKILL
Restart=on-failure
Restart=on-failure

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@ -0,0 +1,96 @@
#!/usr/bin/env python3
"""
{{ ansible_managed }}
This Script changes the monitor in KODI's guisettings.xml to the wanted output
according to the DISPLAY environment variable. It works with KODI 18 (not KODI 17!).
"""
import os
import sys
import subprocess
import xml.etree.ElementTree as ET
GUISETTINGS = '/var/lib/vdr/.kodi/userdata/guisettings.xml'
CACHE_DIR = '/var/lib/vdr/.kodi/.display_cache'
VIDEOSCREEN_TEMPLATE = """<settings version="2">
<setting id="videoscreen.monitor" default="true">{}</setting>
</settings>"""
def get_output_names():
"""
get display name from xrandr output for given DISPLAY environment variable
"""
xrandr_output = [
l for l in subprocess.check_output(
["xrandr"],
env={"DISPLAY": os.environ["DISPLAY"]}
).decode("utf-8").splitlines()
]
return [l.split()[0] for l in xrandr_output if " connected " in l]
def parse_template(template_path, template, output=""):
"""read videoscreen settings from backup or create a stub file"""
try:
xml_tree = ET.parse(template_path)
except FileNotFoundError:
print("{} not found, creating stub file".format(template_path))
xml_template = ET.fromstring(template.format(output))
xml_tree = ET.ElementTree(xml_template)
finally:
xml_tree.write(template_path)
return xml_tree
def backup_videoscreen():
"""parse guisettings.xml for display name an backup videoscreen data"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, "Default")
root = tree.getroot()
videoscreen = root.find("./setting[@id='videoscreen.monitor']")
output = videoscreen.text
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
base_tree = ET.fromstring('<settings version="2"></settings>')
xml_tree = ET.ElementTree(base_tree)
backup_root = xml_tree.getroot()
backup_root.insert(0, videoscreen)
xml_tree.write(xml_path)
print("written backup for {} to {}".format(output, xml_path))
def change_videoscreen(output, new_videoscreen):
"""change videoscreen node to content of backup file"""
tree = parse_template(GUISETTINGS, VIDEOSCREEN_TEMPLATE, output)
root = tree.getroot()
videoscreen = root.find('./setting[@id="videoscreen.monitor"]')
if videoscreen is not None:
videoscreen.text = new_videoscreen.text
else:
videoscreen = root.find("./settings")
root.insert(0, new_videoscreen)
tree.write(GUISETTINGS)
return tree
if __name__ == '__main__':
output = get_output_names()[0]
if not output:
sys.exit("Error: no screen name found")
try:
os.makedirs(CACHE_DIR, exist_ok=True)
except PermissionError:
sys.exit("Error: insufficient permissions to create cachedir {}".format(
CACHE_DIR))
try:
backup_videoscreen()
except FileNotFoundError:
print("{} does not exist".format(GUISETTINGS))
except Exception as e:
print("Could not backup videoscreen.monitor:", str(e))
xml_path = os.path.join(CACHE_DIR, '{}-videodevice.xml'.format(output))
videodir_xml = parse_template(xml_path, VIDEOSCREEN_TEMPLATE, output)
videodir_root = videodir_xml.getroot()
new_videoscreen = videodir_root.find("./setting[@id='videoscreen.monitor']")
guisettings_xml = change_videoscreen(output, new_videoscreen)

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@ -69,7 +69,8 @@
# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
map to guest = bad user
map to guest = bad password
guest account = nobody
{% if samba.windows_compatible %}
# disable unix extensions and enable following symlinks

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@ -174,3 +174,8 @@
dest: /etc/X11/xorg.conf.d/20-intel.conf
when:
- intel_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

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@ -0,0 +1,8 @@
{{ ansible_managed | comment }}
Section "ServerFlags"
Option "NoPM" "true"
Option "blank time" "0"
Option "standby time" "0"
Option "suspend time" "0"
Option "off time" "0"
EndSection