So, after trying every combination of options I could think of to no effect, as well as several reboots, I gave up. However, after rebooting the *keyboard itself*, the beeps are gone! So it's possible that this is a firmware bug in the keyboard and not in ubuntu. I will update if I discover anything else.
So, after trying every combination of options I could think of to no effect, as well as several reboots, I gave up. However, after rebooting the *keyboard itself*, the beeps are gone! So it's possible that this is a firmware bug in the keyboard and not in ubuntu. I will update if I discover anything else.