Autostart with KMS grab

[Anvil5465]

I have tried making a system service for sunshine with KMS grab enabled, but I have been running into a lot of problems. Initially, the service simply wouldn't start at boot, but I was able to overcome this with a sudo crontab job (@reboot sleep 30 && systemctl start sunshine.service). However, I have reached a dead end that I can't seem to fix. For some reason, if sunshine is launched using my system service, it fails to create an audio device and stream the computer's audio. My system service file is below. I am using Ubuntu 24.10. Any help would be greatly appreciated.

[Unit]
Description=Sunshine self-hosted game stream host for Moonlight.
StartLimitIntervalSec=500
StartLimitBurst=5

[Service]
ExecStart=/bin/bash -c "PULSE_SERVER=unix:$(pactl info | awk '/Server String/{print$3}') flatpak run dev.lizardbyte.app.Sunshine"
Restart=on-failure
RestartSec=5s

[Install]
WantedBy=graphical-session.target

[ReenigneArcher]

Here's some references for you:

• Flatpak version: without audio or without video LizardByte/Sunshine#2839
• Documentation: Startup call for Linux+Flatpak (sudo -i PULSE_SERVER...) is incorrect LizardByte/Sunshine#3261
• Documentation: Fix the instruction for KMS_CAPTURE LizardByte/Sunshine#2840

We definitely need to improve the instructions around flatpak, but I'll close this since it will be handled upstream and then propagate here to flathub.

[Anvil5465]

Thanks so much this is super helpful