LMMS Wiki has been archived and it is now read-only. If you are interested in writing documentation or tutorials for LMMS, please move to https://docs.lmms.io/user-manual/.

Fixing audio latency on Ubuntu

From LMMS Wiki
Jump to navigation Jump to search

I get lots of latency (lag) when playing instruments in LMMS

This is often the cause of your sound being routed through PulseAudio (which is the default for many desktop distributions such as Ubuntu), even if you have set the audio interface to ALSA. To fix this problem, LMMS needs to directly access your sound card. To do this, run

aplay -l

And look at the card and device numbers - for example:

card 2: SI7012 [SiS SI7012], device 0: Intel ICH [SiS SI7012]

Next, go to LMMS, open the settings menu (Edit > Settings), go to the Audio Settings tab, and in the "device" field, delete "default" and type


Where the first "x" is the card number, and the second is the device number. For example, the above configuration would be "hw:2,0". Restart LMMS and you should have very little latency.