Export fail with underruns

Installation & Configuration Linux
#1

Suddenly Ardour starts having problems with export to audio. A dialog says the disk cannot keep up with Ardour. Nothing in the log window, but the console shows:

STE-008 Need 1024 total = 679
underrun for STE-008
STE-001 1 Need 1024 total = 679
underrun for STE-001 1
STE-003 Need 1024 total = 679
underrun for STE-003

and some more.

I haven’t seen this before… did I accidentally change a setting?

#2

Bugs belong on tracker.ardour.org
Also include a lot more information there (application version, export settings…) Thanks in advance.

#3