I am running an Ubuntu 22.04 standard desktop on a Intel J4205 board (integrated celeron J4205 & Intel graphics) connected to my TV.
It was running very nicely on 20.04 until some point in the summer where the screen would not return after changing channels - instead it displays no signal.
I upgraded to 22.04 to see if that would fix - it did not. I ran a live CD of 22.04 and there was no problem, so I rebuilt my machine. Back to no signal. Throughout, all the other services are running (Plex, Cockpit, Nextcloud, Samba), just no screen.
I've tried disabling Intel_idle to use default ACPI and I have tried disabling ACPI completely in the BIOS. I have switched off screensaver and sleep mode. I've even installed gnome tweak to disable lid shut behaviour (even though it doesn't have one).
Most of the similar issues I see on Google are for nvidea graphics and are driver related, which isn't the case here.
The only workaround I have is to put the computer into suspend and wake it up again, which isn't ideal.
The following entry from journalctl seems to correspond with attempts to wake up the screen - but I don't know what to do with this knowledge.
Dec 20 10:16:52 systemd[393515]: Started Service for snap application snapd-desktop-integration.snapd-desktop-integration.
Dec 20 10:16:52 systemd[393515]: Stopped Service for snap application snapd-desktop-integration.snapd-desktop-integration.
Dec 20 10:16:52 systemd[393515]: snap.snapd-desktop-integration.snapd-desktop-integration.service: Scheduled restart job, restart counter is at 1.
Dec 20 10:16:52 PackageKit[1900]: resolve transaction /196_adbbadaa from uid 0 finished with success after 787ms
Dec 20 10:16:52 goa-daemon[393681]: /org/gnome/OnlineAccounts/Accounts/account_1670874977_0: Setting AttentionNeeded to TRUE because EnsureCredentials() failed with: No credentials found in the keyring (goa-error-quark, 4)
Dec 20 10:16:52 goa-daemon[393681]: secret_password_lookup_sync() returned NULL
Dec 20 10:16:52 gnome-keyring-d[393737]: couldn't create system prompt: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.keyring.SystemPrompter exited with status 1
Dec 20 10:16:52 gnome-keyring-daemon[393737]: couldn't create system prompt: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.keyring.SystemPrompter exited with status 1
Dec 20 10:16:52 dbus-daemon[393535]: [session uid=1000 pid=393535] Activated service 'org.gnome.keyring.SystemPrompter' failed: Process org.gnome.keyring.SystemPrompter exited with status 1
Dec 20 10:16:52 gcr-prompter[393745]: cannot open display:
Dec 20 10:16:52 dbus-daemon[393535]: [session uid=1000 pid=393535] Activating service name='org.gnome.keyring.SystemPrompter' requested by ':1.20' (uid=1000 pid=393737 comm="/usr/bin/gnome-keyring-daemon --start --foreground" label="unconfined")
Dec 20 10:16:52 dbus-daemon[393535]: [session uid=1000 pid=393535] Successfully activated service 'org.freedesktop.secrets'
Dec 20 10:16:52 gnome-keyring-d[393737]: couldn't access control socket: /run/user/1000/keyring/control: No such file or directory
Dec 20 10:16:52 gnome-keyring-daemon[393737]: couldn't access control socket: /run/user/1000/keyring/control: No such file or directory
Dec 20 10:16:51 dbus-daemon[393535]: [session uid=1000 pid=393535] Activating service name='org.freedesktop.secrets' requested by ':1.15' (uid=1000 pid=393681 comm="/usr/libexec/goa-daemon " label="unconfined")
