Myth Box Configuration

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Myth Box Configuration

This is mostly for my reference, but you never know what might come in handy for someone else. I'm writing most of this after the fact, so I may have forgotten some steps, but I think this covers the main ones.

Pretty much all of the following needs to be run as root.
* {{{dnf install http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm}}}
* {{{dnf install mythtv}}}
* {{{dnf install ntp}}}
* Set /etc/ntp.conf server to Torch
* {{{systemctl start ntpd; systemctl enable ntpd}}}
* {{{systemctl start httpd; systemctl enable httpd}}}
* {{{dnf groupinstall "Xfce Desktop"}}}
* {{{dnf install kdm}}}
* Hopefully the above is enough to get a graphical environment going. Set it to boot to the UI by default:
* {{{systemctl set-default graphical}}}
* I had to hard link /etc/mythtv/config.xml to ~/.mythtv/config.xml for the backend to start.
* Configure sane video settings in Grub. Get the name of the output:
* {{{for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n "${con#*/card?-}: "; cat $p; done}}}
* In {{{/etc/default/grub}}} (I'm not sure the vga line does anything with KMS, but it won't hurt either):
* {{{GRUB_CMDLINE_LINUX="rhgb quiet vga=0x3d9 splash video=HDMI-A-1:1920x1080"}}}
* {{{grub2-mkconfig -o /boot/grub2/grub.cfg}}}
* fstrim cron job. In {{{/etc/cron.daily/fstrim}}}:
{{{
#!/bin/bash
fstrim -a
}}}
* {{{chmod +x /etc/cron.daily/fstrim}}}
* Configure mythweb in {{{/etc/httpd/conf.d/mythweb.conf}}}. Specifically the database and possibly hostname.
* {{{max_input_vars = 10000}}} in /etc/php.ini (allows editing of large channel lists via MythWeb)
* Apply ugly hack if X keeps losing the plot when you turn the tv off. Create the following file in /usr/local/sbin/uglyhack:
{{{
#!/bin/bash

export DISPLAY=:0
while :
do
if ! xrandr --nograb --current | grep -q \*
then
xrandr --output HDMI-0 --mode 1920x1080
fi
sleep 1
done
}}}
* {{{chmod +x /usr/local/sbin/uglyhack}}}
* Then create a systemd service to run it (probably in /etc/systemd/system):
{{{
[Unit]
Description=Ugly X Hack
After=graphical.target

[Service]
Type=simple
User=cybertron
ExecStart=/usr/local/sbin/uglyhack
Restart=always

[Install]
WantedBy=graphical.target
}}}
* {{{systemctl start uglyhack; systemctl enable uglyhack}}}
* The default mythbackend unit file needs some tweaks or myth doesn't start right at boot time. Put the following in /etc/systemd/system/mythbackend.service:
{{{
[Unit]
Description=MythTV backend service
After=network-online.target mariadb.service mysqld.service time-sync.target
Wants=httpd.service

[Service]
Type=simple
Environment=MYTHCONFDIR=/etc/mythtv
User=mythtv
ExecStart=/usr/bin/mythbackend --logpath /var/log/mythtv
Restart=always
Restart=on-failure
StartLimitBurst=5
StartLimitInterval=1

[Install]
WantedBy=multi-user.target
}}}