On Tue, 15 Nov 2005 at 21:00 +0100, Christoph Eckert wrote: > Hi, > > > > Not sure if I'm seeing the same problem, but it sounds like it might > > be. My midi controller (keystation) works fine for day after day of > > minimal use, and then one day I'll go to use it and it doesn't work. > > qjackctl sees it and can establish connections, dmesg reports nothing > > unusual. It just doesn't seem to be generating any events. I unplug > > its usb and it disappears from qjackctl. I plug it back in and it > > reappears, but still doesn't work. So I unplug the power and plug it > > back in, same thing. So I unload snd-usb-audio and unplug the usb and > > plug it back in and the same thing. Finally I give up and reboot. > > did you try amidimon in a shell window (amidimon --ports all) or > kmidimon to check if there realy is no MIDI coming in? No, but I tried aseqview. I'll try one of those next time. > In your case, maybe it's a problem of coldplug vs. hotplug. I'd try to > unplug the devices during boot time and plug it in after you logged in. I think it is probably *plug related. I used to think that something in the usb drivers was getting in a wierd state, but this last time being able to fix it without a reboot is making me doubt that. Or it could have been a coincidental unrelated problem. > Furthermore, ensure that in your kernel config, drivers, usb you have > *disabled* usb-midi and usb-audio. Both are OSS and conflict with the > ALSA snd_usb_audio which handles four USB devices perfectly on my > machine (except for the keyboard loss, of course :) . I'll double-check. Plugging and unplugging with snd-usb-audio works great most of the time. -- Hans Fugal ; http://hans.fugal.net There's nothing remarkable about it. All one has to do is hit the right keys at the right time and the instrument plays itself. -- Johann Sebastian Bach -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: Digital signature Url : http://music.columbia.edu/pipermail/linux-audio-user/attachments/20051115/23f9db0d/attachment.bin
