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? ... 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] Not tainted Jul 28 22:28:10 tuba kernel: EFLAGS: 00210246 Jul 28 22:28:10 tuba kernel: eax: 29323030 ebx: dcb21940 ecx: dcb21984 edx: dcb21900 Jul 28 22:28:10 tuba kernel: esi: d900d000 edi: 00001fff ebp: e2b637dc esp: d84cdee4 Jul 28 22:28:10 tuba kernel: ds: 0018 es: 0018 ss: 0018 Jul 28 22:28:10 tuba kernel: Process rmmod (pid: 529, stackpage=d84cd000) Jul 28 22:28:10 tuba kernel: Stack: d9662dc0 db38cc00 e28583ed d900d000 e2854e5a d9662dc0 00001000 e2854fc5 Jul 28 22:28:10 tuba kernel: db38cc00 d900d000 db38cc00 00000001 e2b637c0 e28519ae db38cc00 00000001 Jul 28 22:28:10 tuba kernel: 00000000 e2b62a01 db38cc00 dfe68898 c021e47d dfe67800 db38cc00 dfe67300 Jul 28 22:28:10 tuba kernel: Call Trace: [snd-dt019x:__insmod_snd-dt019x_O/lib/modules/2.4.19-rc1/kernel/sound/i+-195603/96] [snd-dt019x:__insmod_snd-dt019x_O/lib/modules/2.4.19-rc1/kernel/sound/i+-209318/96] [snd-dt019x:__insmod_snd-dt019x_O/lib/modules/2.4.19-rc1/kernel/sound/i+-208955/96] [<e2b637c0>] [snd-dt019x:__insmod_snd-dt019x_O/lib/modules/2.4.19-rc1/kernel/sound/i+-222802/96] Jul 28 22:28:10 tuba kernel: [<e2b62a01>] [usb_drivers_purge+141/224] [<e2b637c0>] [usb_drivers_purge+62/224] [<e2b637c0>] [<e2b637c0>] Jul 28 22:28:10 tuba kernel: [usb_deregister+114/144] [<e2b637c0>] [<e2b62a8a>] [<e2b637c0>] [free_module+23/160] [sys_delete_module+247/448] Jul 28 22:28:10 tuba kernel: [system_call+51/56] Jul 28 22:28:10 tuba kernel: Jul 28 22:28:10 tuba kernel: Code: 89 50 04 89 02 ff 4b 3c ff 43 44 0f 8e 05 07 00 00 53 56 e8 a small bug or a big hole? martin ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
