I have the same issue with other web-midi apps (for example https://teenage.engineering/apps/ep-sample-tool )
It seems this was caused by a chrome bug that surfaced with linux 6.5. See discussion here: https://issues.chromium.org/issues/40940293 There is a fix https://chromium- review.googlesource.com/c/chromium/src/+/5302886 that solved my issue with non working outgoing web-midi. I haven't tested the novation products but it seems likely that this is caused by the same bug. That fix is not yet in stable chrome. I tested fix with : chrome beta Version 123.0.6312.22 Ubuntu 22.04.3 LTS Linux 6.5.0-21 ** Bug watch added: issues.chromium.org/issues #40940293 https://issues.chromium.org/issues/40940293 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2043299 Title: Linux 6.5 breaks Novation Components web MIDI application To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2043299/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs