At Sun, 28 Jul 2002 23:39:24 +0200, Martin Langer wrote: > > > Hi, > > my new USB-MIDI-Keyboard has two USB subclasses usb-midi and usb-audio. > Evolution, the manufacturer, told me "it's an Audio Class compliant device", > but I don't find a new entry in /proc/asound/seq/clients after loading the > modules. > > cat /proc/bus/usb/devices > > T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 > D: Ver= 1.00 Cls=01(audio) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=0a4d ProdID=008e Rev= 2.00 > S: Manufacturer=Evolution Electronics Ltd. > S: Product=MK-249C USB MIDI keyboard > C:* #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr= 0mA > I: If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio > I: If#= 1 Alt= 0 #EPs= 2 Cls=01(audio) Sub=03 Prot=00 Driver=snd-usb-midi > E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms > E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms > > > dmesg: > > usb.c: registered new driver snd-usb-audio > usb.c: snd-usb-audio driver claimed interface dfe688c0 > usb.c: registered new driver snd-usb-midi > snd-usb-midi: using interface 1 > snd-usb-midi: MIDIStreaming version 01.00 > snd-usb-midi: using 1 input jack(s) on endpoint 1 > snd-usb-midi: using 1 output jack(s) on endpoint 2 > snd-usb-midi: detected Evolution Electronics L MK-249C USB MIDI keyboa > usb.c: snd-usb-midi driver claimed interface dfe688d8 > > > > It's not typical to have a midi-keyboard with two subclasses, or?
it's ok. so far, audio and midi are implemented in separate ways. yes, it would be nice if they are integrated, though. > ... and doing rmmod snd-usb-midi and rmmod snd-usb-audio ends here with > Segmentation fault: > > > Jul 28 22:28:07 tuba kernel: usb.c: deregistering driver snd-usb-audio > Jul 28 22:28:10 tuba kernel: usb.c: deregistering driver snd-usb-midi > Jul 28 22:28:10 tuba kernel: Unable to handle kernel paging request at > virtual address 29323034 > Jul 28 22:28:10 tuba kernel: printing eip: > Jul 28 22:28:10 tuba kernel: e2858329 > Jul 28 22:28:10 tuba kernel: *pde = 00000000 > Jul 28 22:28:10 tuba kernel: Oops: 0002 > Jul 28 22:28:10 tuba kernel: CPU: 0 > Jul 28 22:28:10 tuba kernel: EIP: > >0010:[snd-dt019x:__insmod_snd-dt019x_O/lib/modules/2.4.19-rc1/kernel/sound/i+-195799/96] hmm, why snd-dt019x module appears here..? was it loaded? the trace seems corrupted... could you try to put snd-usb-audio to /etc/hotplug/blacklist, so that it's not automatically loaded. then we'll know the problem is related only with snd-usb-midi. Takashi ------------------------------------------------------- This sf.net email is sponsored by: Dice - The leading online job board for high-tech professionals. Search and apply for tech jobs today! http://seeker.dice.com/seeker.epl?rel_code=31 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
