Ableton Forum

Well I've tried different hubs, that didn't change anything.

I also tried changing the device ID on one of the keyboards, and that didn't do much.

I wonder if after changing the device ID I need to reinstall the devices?

I've also verified that this is likely a Live specific problem -- within ...

If you want to get realy geeky, you can use various windows system diagnostic tools to measure ISRs & DPCs (geeky processing that is done on behalf of drivers in the OS kernel). Some devices cause really long ISRs or DPCs that can starve the CPU and lead to glitching.

On my PC, I found that my ...

Hello -- I'm running Live 6 on Windows Vista and I have two M-Audio O2 USB keyboards. THey are both installed correctly and in the MIDI set-up I can see both of them, but I can only get one to work at a time.

They are both functional -- when I disable one, the other works.

But I'd love to get ...