Installing ubntustudio-audio causes hang at login

[Antonio Roberts]

I'm on a fresh installation of Ubuntu 19.04 and have installed the ubuntustudio-audio package. Occasionally when I restart it will hang when I log in to my user account. The mouse can still be moved etc but the desktop never loads.

I'm using a Dell XPS 13.

[Len Ovens (len-ovenwerks)]

1) have you also installed:
   ubuntustudio-controls
   ubuntustudio-performance-tweaks
   ubuntustudio-audio-core
   ubuntustudio-plugins
   linux-lowlatency
     ubuntustudio-lowlatency-settings

The first three should probably have been installed as depends for ubuntustudio-audio but may not have. The last three are more optional but worth while for most audio workflows.

2) have you run ubuntustudio-controls? If you have installed ubuntustudio-audio from the gnome software installer, jack has probably not been installed correctly (this affects other SW besides jack such as ardour). Running ubuntustudio-controls and clicking on the FIX Real Time Permissions button should fix that. (then log out and in or reboot)

Please leave a comment if this helps or not. The normal way of adding ubuntustudio metas to another flavour is to first install ubuntustudio-installer and use this to install. The latest version of ubuntustudio-installer does this fix automatically.

[Antonio Roberts (hellocatfood)]

ubuntustudio-controls and ubuntustudio-audio-core were automatically installed when I installed ubuntustudio-audio. I had to manually install ubuntustudio-audio-performance-tweaks.

I had installed jack just before I installed these packages and so the option to fix real time permissions wasn't available.

Before reinstalling my system I had previously tried using the GUI installer but encountered this bug https://bugs.launchpad.net/ubuntu/+source/ubuntustudio-installer/+bug/1839182

[Erich Eickmeyer (eeickmeyer)]

ubuntustudio-audio-performance-tweaks isn't a package. Perhaps you meant ubuntustudio-performance-tweaks?

[Antonio Roberts (hellocatfood)]

Yes (typo)

[Erich Eickmeyer (eeickmeyer)]

You never answered the question Len asked about running Ubuntu Studio Controls: "Running ubuntustudio-controls and clicking on the FIX Real Time Permissions button should fix that. (then log out and in or reboot)". Was this attempted?

[Len Ovens (len-ovenwerks)]

Have you installed the lowlatency kernel? And if so, have you tried booting booting the generic kernel? (from the advanced menu not the second item which might just be a copy of lowlatency <fixed in 19.10>)

[Antonio Roberts (hellocatfood)]

I'd addressed Len's answer with this:

"I had installed jack just before I installed these packages and so the option to fix real time permissions wasn't available." To add to this, I have run ubuntustudio-controls and I can't see an option to "FIX Real Time Permissions", possibly because I had installed Jack before I had installed ubuntustudio-audio.

I don't want the lowlatency kernel and so won't be installing it, and it seems like it's optional.

[Len Ovens (len-ovenwerks)]

Yes the lowlat kernel is optional. perhaps try removing ubuntustudio-performance-tweaks. I can think of nothing else that may be causing this.

Have you set up jack (using ubuntustudio-controls or Cadence) to autostart at session start? If so try turning jack off just before rebooting/shutting down. (not sure how to do that with Cadence)

It would appear that there is one package causing your problem. So far we don't know what. What with the move systemd, I am not sure where to look for log files that might show something useful.

[Antonio Roberts (hellocatfood)]

ubuntustudio-performance-tweaks wasn't installed until Erich suggested it earlier, so I don't think it was causing the problem.

I don't have jack or cadence auto starting.

I'm not sure where else to look. I think the hardest thing in diagnosing this is that sometimes it happens and sometimes it doesn't.

I have another computer which I'll eventually reisntall everything and hopefully I'll know more

[Erich Eickmeyer (eeickmeyer)]

Ok, this has officially taken a turn down the "support request" road, which means this is an invalid bug report per Launchpad rules. Please follow support channels at https://ubuntustudio.org/support and contact us that way to help get this resolved.