Re: [Alsa-user] ALSA USB MIDI Input
On Tue, 20 Aug 2002, Pedro Lopez-Cabanillas wrote: El Mar 20 Ago 2002 10:10, Clemens Ladisch escribió: IMHO there's nothing wrong with loading the driver when the keyboard is plugged in. I'd suggest to list only the OSS drivers in the blacklist file. Hotplug can't load the snd-usb-midi module, except for the vendor/product ids listed in MODULE_DEVICE_TABLE(usb, snd_usbmidi_usb_id_table). Michael has an Evolution keyboard, a standard USB class compliant device, AFAIK. Hotplug only looks for the first interface descriptor found for each device. This is true for the user mode hotplug call only (e.g., for the daemon). For kernel drivers, Linux checks all interfaces. The only workaround I know for now, is blacklist snd-usb-audio module and load snd-usb-midi by hand or like any other ALSA module: kmod + modules.conf It isn't necessary to blacklist the snd-usb-audio module (see above). Martin Langer reported that his Evolution keyboard works. Regards, Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
(sorry for the delay) On Tue, 20 Aug 2002, Michael Martin wrote: But I'm having difficulty setting up my /etc/modules.conf file Do I need to set the USB device as a new sound card? What do I do? Also are there any docs for getting OSS Emulation to work for the USB MIDI Device? The driver should work without any driver-specific entries in modules.conf, it will then pick the first free sound card number. You would need to modify modules.con if you wanted to change some module parameters, or if you want to use OSS emulation. An example and an explanation can be found in the installation instructions which can be reached from http://www.alsa-project.org/alsa-doc/. HTH Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
On Tue, 20 Aug 2002, Michael Martin wrote: The kernel had this to say Aug 20 15:55:36 linux kernel: hub.c: USB new device connect on bus1/2, assigned device number 3 Aug 20 15:55:36 linux kernel: snd-usb-midi: using interface 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: MIDIStreaming version 01.00 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 input jack(s) on endpoint 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 output jack(s) on endpoint 2 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected Evolution Electronics Ltd. MK-249 USB MIDI keyboard Aug 20 15:55:36 linux kernel: ALSA ../alsa-kernel/usb/usbmidi.c:1196: cannot create card (error code -12) but 15:55:36 was when I unplugged and re plugged in the keyboard. I want hotplugging. The hotplugging code works, but for some reason, the driver isn't able to create the sound card object. I'd guess that the snd_cards_limit parameter is set to 1, so that ALSA refuses to use more than one sound card. (Maybe the SuSE installation sets this to 1 because it doesn't know about USB MIDI.) The following lines for /etc/modules.conf should work for your configuration: alias char-major-116 snd options snd snd_cards_limit=2 alias snd-card-0 snd-cmipci options snd-cmipci snd_index=0 alias snd-card-1 snd-usb-midi options snd-usb-midi snd_index=1 # (entries for OSS omitted, see my other mail) HTH Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
RE: [Alsa-user] ALSA USB MIDI Input
Fantastic. aconnect -i now lists: client 72: 'Evolution Electronics Ltd. USB MIDI keyboard' 1 'USB MIDI keyboard Port 1' BUT now my snd-cmipci card doesn't work. My /etc/modules.conf (attached) looks like this at the sound area: # WL76.leFtcOMtGx0:CMI8738/C3DX PCI Audio Device # # --- BEGIN: Generated by ALSACONF, do not edit. --- # --- ALSACONF verion 0.9.0 --- alias char-major-116 snd alias snd-card-0 snd-cmipci alias char-major-14 soundcore alias sound-slot-0 snd-card-0 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss options snd snd_major=116 snd_cards_limit=2 options snd-cmipci snd_index=0 alias snd-card-1 snd-usb-midi options snd-usb-midi snd_index=1 # --- END: Generated by ALSACONF, do not edit. --- NB: I edited the bit inside the ALSACONF area (which I don't think matters?) to include settings for the usb audio device aswell as the snd-cmipci card Mike -Original Message- From: Clemens Ladisch [mailto:[EMAIL PROTECTED]] Sent: 22 August 2002 09:22 To: Michael Martin Cc: Alsa Users (E-mail) Subject: Re: [Alsa-user] ALSA USB MIDI Input On Tue, 20 Aug 2002, Michael Martin wrote: The kernel had this to say Aug 20 15:55:36 linux kernel: hub.c: USB new device connect on bus1/2, assigned device number 3 Aug 20 15:55:36 linux kernel: snd-usb-midi: using interface 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: MIDIStreaming version 01.00 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 input jack(s) on endpoint 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 output jack(s) on endpoint 2 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected Evolution Electronics Ltd. MK-249 USB MIDI keyboard Aug 20 15:55:36 linux kernel: ALSA ../alsa-kernel/usb/usbmidi.c:1196: cannot create card (error code -12) but 15:55:36 was when I unplugged and re plugged in the keyboard. I want hotplugging. The hotplugging code works, but for some reason, the driver isn't able to create the sound card object. I'd guess that the snd_cards_limit parameter is set to 1, so that ALSA refuses to use more than one sound card. (Maybe the SuSE installation sets this to 1 because it doesn't know about USB MIDI.) The following lines for /etc/modules.conf should work for your configuration: alias char-major-116 snd options snd snd_cards_limit=2 alias snd-card-0 snd-cmipci options snd-cmipci snd_index=0 alias snd-card-1 snd-usb-midi options snd-usb-midi snd_index=1 # (entries for OSS omitted, see my other mail) HTH Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
RE: [Alsa-user] ALSA USB MIDI Input
The Evolution USB MIDI Devices are standard USB class compliant devices.
I've added
audio
usb-midi
snd-usb-midi
snd-usb-audio
to my blacklist file, although I would really like to know how to setup
my /etc/modules.conf file properly to use these modules.
The vendor id is: 0a4d
The product id is: 008c
I ran a USB check on the device and the results are in the attached text
file.
Do I need to edit the MODULE_DEVICE_TABLE or something?
Mike
-Original Message-
From: Pedro Lopez-Cabanillas [mailto:[EMAIL PROTECTED]]
Sent: 20 August 2002 21:26
To: Clemens Ladisch
Cc: Michael Martin; [EMAIL PROTECTED]; Takashi Iwai
Subject: Re: [Alsa-user] ALSA USB MIDI Input
El Mar 20 Ago 2002 10:10, Clemens Ladisch escribi:
Pedro Lopez-Cabanillas wrote:
I suggest you to add these modules to the /etc/hotplug/blacklist file:
# cat /etc/hotplug/blacklist
audio
usb-midi
snd-usb-audio
snd-usb-midi
You can see that I include the ALSA modules here. This prevents hotplug
from loading them when you plug the keyboard, but this is not a problem
if you use the right /etc/modules.conf setup, and the alsasound script.
IMHO there's nothing wrong with loading the driver when the keyboard is
plugged in. I'd suggest to list only the OSS drivers in the blacklist
file.
Hotplug can't load the snd-usb-midi module, except for the vendor/product
ids
listed in MODULE_DEVICE_TABLE(usb, snd_usbmidi_usb_id_table). Michael has an
Evolution keyboard, a standard USB class compliant device, AFAIK.
Hotplug only looks for the first interface descriptor found for each device.
And the standard for USB MIDI is an AudioControl interface descriptor
(SubClass=1). This interface don't match with the first entry in your table:
static usb_device_id_t snd_usbmidi_usb_id_table[] = {
{ match_flags: USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS,
bInterfaceClass: USB_CLASS_AUDIO,
bInterfaceSubClass: USB_SUBCLASS_MIDISTREAMING }, ...
But it matches with the corresponding table in usbaudio.c:
static struct usb_device_id usb_audio_ids [] = {
{ .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS),
.bInterfaceClass = USB_CLASS_AUDIO,
.bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL },
{ } /* Terminating entry */
};
You can read a bit about this in
http://linux-hotplug.sourceforge.net/?selected=usb
variable: INTERFACE
example: 3/1/1
notes: bInterfaceClass/bInterfaceSubClass/bInterfaceProtocol, from _first_
interface descriptor. Available only for device class zero. Numbers are
decimal.
As a result, when you plug a true standard USB MIDI thing, hotplug invokes
the
user.agent script with only information about the AudioControl interface,
and
user.agent probe() the snd-usb-audio module, that fails for MIDI-only
devices. The snd-usb-midi module is never loaded neither probed.
The only workaround I know for now, is blacklist snd-usb-audio module and
load snd-usb-midi by hand or like any other ALSA module: kmod + modules.conf
A clean solution for future development, IMHO, can be a third snd-usb
module,
a kind of ALSA-USB arbitrator, responsible for the descriptor parsing code,
register in USB and ALSA subsystems, and for loading the audio or midi
modules. This can be useful also for integration of some mixed audio/midi
devices, as Mr. Takashi asked for.
Regards,
Pedro
All Descriptors Report (10:39 - 21/8/102)
Device Descriptor Fields:
bLength 0x12
bDescriptorType 0x01
bcdUSB 0x0100 (USB spec. 01.00)
bDeviceClass 0x00 (ifc's specify own)
bDeviceSubClass 0x00
bDeviceProtocol 0x00
bMaxPacketSize0 0x40
idVendor 0x0A4D (unknown)
idProduct 0x008C
bcdDevice 0x0252 (release 02.52)
iManufacturer 0x01
Language ID 0x0409
iManufacturer String Evolution Electronics Ltd.
iProduct 0x02
Language ID 0x0409
iProduct String MK-249 USB MIDI keyboard
iSerialNumber 0x00
bNumConfigurations 0x01 (1)
Configuration Descriptor, Index 0x00
Re: [Alsa-user] ALSA USB MIDI Input
Pedro Lopez-Cabanillas wrote: I see both usb-midi and usbmidi. Could this be because I've got the daemon installed as well? No, but you should uninstall it if you are going to use the driver instead the daemon. To uninstall the daemon, run make uninstall in the usbmidid-x.x.x directory. (I forgot to document this in the readme) Both usb-midi and usbmidi are from messages from the OSS driver. The daemon uses usbmidid, the ALSA driver uses snd-usb-midi. I suggest you to add these modules to the /etc/hotplug/blacklist file: # cat /etc/hotplug/blacklist audio usb-midi snd-usb-audio snd-usb-midi You can see that I include the ALSA modules here. This prevents hotplug from loading them when you plug the keyboard, but this is not a problem if you use the right /etc/modules.conf setup, and the alsasound script. IMHO there's nothing wrong with loading the driver when the keyboard is plugged in. I'd suggest to list only the OSS drivers in the blacklist file. In theory, the kernel should be configured without the OSS drivers when ALSA is used, but not everyone takes the trouble of recompiling the kernel. HTH Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
RE: [Alsa-user] ALSA USB MIDI Input
I've re-installed Linux (SuSE 8.0 Pro), compiled the ALSA 0.9.0r3 Drivers, Libs and Utils as well as Aseqview. But I'm having difficulty setting up my /etc/modules.conf file Do I need to set the USB device as a new sound card? What do I do? Also are there any docs for getting OSS Emulation to work for the USB MIDI Device? Mike -Original Message- From: Clemens Ladisch [mailto:[EMAIL PROTECTED]] Sent: 20 August 2002 09:10 To: Pedro Lopez-Cabanillas Cc: Michael Martin; [EMAIL PROTECTED] Subject: Re: [Alsa-user] ALSA USB MIDI Input Pedro Lopez-Cabanillas wrote: I see both usb-midi and usbmidi. Could this be because I've got the daemon installed as well? No, but you should uninstall it if you are going to use the driver instead the daemon. To uninstall the daemon, run make uninstall in the usbmidid-x.x.x directory. (I forgot to document this in the readme) Both usb-midi and usbmidi are from messages from the OSS driver. The daemon uses usbmidid, the ALSA driver uses snd-usb-midi. I suggest you to add these modules to the /etc/hotplug/blacklist file: # cat /etc/hotplug/blacklist audio usb-midi snd-usb-audio snd-usb-midi You can see that I include the ALSA modules here. This prevents hotplug from loading them when you plug the keyboard, but this is not a problem if you use the right /etc/modules.conf setup, and the alsasound script. IMHO there's nothing wrong with loading the driver when the keyboard is plugged in. I'd suggest to list only the OSS drivers in the blacklist file. In theory, the kernel should be configured without the OSS drivers when ALSA is used, but not everyone takes the trouble of recompiling the kernel. HTH Clemens --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
RE: [Alsa-user] ALSA USB MIDI Input
The kernel had this to say Aug 20 15:54:54 linux kernel: C-Media PCI soundcard not found or device busy Aug 20 15:54:54 linux insmod: /lib/modules/2.4.18-4GB/kernel/sound/pci/snd-cmipci.o: init_module: No such device Aug 20 15:54:54 linux insmod: Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters Aug 20 15:54:54 linux insmod: /lib/modules/2.4.18-4GB/kernel/sound/pci/snd-cmipci.o: insmod sound-slot-0 failed Aug 20 15:54:55 linux kernel: C-Media PCI soundcard not found or device busy Aug 20 15:54:55 linux insmod: /lib/modules/2.4.18-4GB/kernel/sound/pci/snd-cmipci.o: init_module: No such device Aug 20 15:54:55 linux insmod: Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters Aug 20 15:54:55 linux insmod: /lib/modules/2.4.18-4GB/kernel/sound/pci/snd-cmipci.o: insmod sound-slot-0 failed Aug 20 15:55:32 linux kernel: usb.c: USB disconnect on device 2 Aug 20 15:55:36 linux kernel: hub.c: USB new device connect on bus1/2, assigned device number 3 Aug 20 15:55:36 linux kernel: snd-usb-midi: using interface 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: MIDIStreaming version 01.00 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 input jack(s) on endpoint 1 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected 1 output jack(s) on endpoint 2 Aug 20 15:55:36 linux kernel: snd-usb-midi: detected Evolution Electronics Ltd. MK-249 USB MIDI keyboard Aug 20 15:55:36 linux kernel: ALSA ../alsa-kernel/usb/usbmidi.c:1196: cannot create card (error code -12) cmi-pci is my sound card. I did an insmod cmi-pci. but 15:55:36 was when I unplugged and re plugged in the keyboard. I want hotplugging. Mike --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
El Lun 19 Ago 2002 15:34, Michael Martin escribió: Hi, I downloaded, compiled, installed the alsa drivers (0.9.0rc3) You need alsa-lib and alsa-utils packages also. I did modprobe snd-cmipci I did modprobe usb-midi All successful. But then I did aconnect -i and I could only see my sound card's External MIDI interface, not the usb-midi interface. usb-midi is the old OSS driver. If you want to use ALSA, try modprobe snd-usb-midi instead. You can use OSS programs with ALSA drivers, thanks to the OSS emulation included in ALSA, but not vice versa; aconnect will only work with ALSA drivers. Do I need to add any lines to my /etc/modules.conf to make usb midi work? If you set your /etc/modules.conf properly, the alsasound script (installed in /etc/rc.d/init.d by 'make install') will load your modules automatically every time you boot, or by hand running that script anytime. Quoting an early post in this list about modules.conf: Really detailled instructions for almost every supported card are at http://www.alsa-project.org/alsa-doc/ for example this module snippet: # ALSA portion alias char-major-116 snd alias snd-card-0 snd-cmipci alias snd-card-1 snd-usb-midi # module options should go here # OSS/Free portion alias char-major-14 soundcore alias sound-slot-0 snd-card-0 alias sound-slot-1 snd-card-1 # only needed for 1st card alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss Regards, Pedro --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
RE: [Alsa-user] ALSA USB MIDI Input
Followed Pedro's advice. I compiled and install successfully the ALSA lib, utils and kernel driver packages. modprobe snd-usb-midi worked. I checked my /var/log/messages file after plugging the usb device in and here are the results: Aug 19 17:11:56 linux kernel: hub.c: USB new device connect on bus1/2, assigned device number 6 Aug 19 17:11:56 linux kernel: usbaudio: device 6 audiocontrol interface 0 interface 1 MIDIStreaming not supported Aug 19 17:11:56 linux kernel: usbaudio: device 6 audiocontrol interface 0 has 0 input and 0 output AudioStreaming interfaces Aug 19 17:11:56 linux kernel: usb-midi: Found MIDISTREAMING on dev 0a4d:008c, iface 1 Aug 19 17:11:56 linux kernel: usb-midi: Found MIDIStreaming device corresponding to Release 1.00 of spec. Aug 19 17:11:56 linux kernel: usb-midi: Found IN Jack 0x01 EMBEDDED Aug 19 17:11:56 linux kernel: usb-midi: Found IN Jack 0x02 EXTERNAL Aug 19 17:11:56 linux kernel: usb-midi: Found OUT Jack 0x03 EMBEDDED, 1 pins Aug 19 17:11:56 linux kernel: usb-midi: Found OUT Jack 0x04 EXTERNAL, 1 pins Aug 19 17:11:56 linux kernel: string descriptor 0 found (length = 4) Aug 19 17:11:56 linux kernel: usb-midi: langid(0) 0x0409 Aug 19 17:11:56 linux kernel: usb-midi: langid(match) 0x0409 Aug 19 17:11:56 linux kernel: usb-midi: fetchString(2) Aug 19 17:11:56 linux kernel: usb-midi: fetchString = 24 Aug 19 17:11:56 linux kernel: usbmidi: found [ MK-249 USB MIDI keyboard ] (0x0a4d:0x008c), attached: Aug 19 17:11:56 linux kernel: usbmidi: /dev/midi01: in (ep:81 cid: 0 bufsiz: 0) out (ep:02 cid: 0 bufsiz:64) Aug 19 17:11:57 linux kernel: usb.c: registered new driver snd-usb-audio Aug 19 17:11:57 linux kernel: usbaudio: device 6 audiocontrol interface 0 interface 1 MIDIStreaming not supported Aug 19 17:11:57 linux kernel: usbaudio: device 6 audiocontrol interface 0 has 0 input and 0 output AudioStreaming interfaces Aug 19 17:11:57 linux kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1966: cannot create a card instance 0 Aug 19 17:11:57 linux insmod: Using /lib/modules/2.4.18-4GB/kernel/sound/usb/snd-usb-audio.o Where am I going wrong? When I did aconnect -i no usb device was shown. Aug 19 17:11:57 linux kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1966: cannot create a card instance 0 MK-249 USB MIDI keyboard is the Evolution keyboard. I see both usb-midi and usbmidi. Could this be because I've got the daemon installed as well? -Original Message- From: Pedro Lopez-Cabanillas [mailto:[EMAIL PROTECTED]] Sent: 19 August 2002 16:29 To: Michael Martin Cc: alsa-user Subject: Re: [Alsa-user] ALSA USB MIDI Input El Lun 19 Ago 2002 15:34, Michael Martin escribi: Hi, I downloaded, compiled, installed the alsa drivers (0.9.0rc3) You need alsa-lib and alsa-utils packages also. I did modprobe snd-cmipci I did modprobe usb-midi All successful. But then I did aconnect -i and I could only see my sound card's External MIDI interface, not the usb-midi interface. usb-midi is the old OSS driver. If you want to use ALSA, try modprobe snd-usb-midi instead. You can use OSS programs with ALSA drivers, thanks to the OSS emulation included in ALSA, but not vice versa; aconnect will only work with ALSA drivers. Do I need to add any lines to my /etc/modules.conf to make usb midi work? If you set your /etc/modules.conf properly, the alsasound script (installed in /etc/rc.d/init.d by 'make install') will load your modules automatically every time you boot, or by hand running that script anytime. Quoting an early post in this list about modules.conf: Really detailled instructions for almost every supported card are at http://www.alsa-project.org/alsa-doc/ for example this module snippet: # ALSA portion alias char-major-116 snd alias snd-card-0 snd-cmipci alias snd-card-1 snd-usb-midi # module options should go here # OSS/Free portion alias char-major-14 soundcore alias sound-slot-0 snd-card-0 alias sound-slot-1 snd-card-1 # only needed for 1st card alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss Regards, Pedro --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
El Lun 19 Ago 2002 18:24, Michael Martin escribió: Where am I going wrong? When I did aconnect -i no usb device was shown. Aug 19 17:11:57 linux kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1966: cannot create a card instance 0 MK-249 USB MIDI keyboard is the Evolution keyboard. I see both usb-midi and usbmidi. Could this be because I've got the daemon installed as well? No, but you should uninstall it if you are going to use the driver instead the daemon. When you plug in some usb device, the linux-hotplug program tries to find a suitable driver, and then modprobe it. That is what happened: first, hotplug has tried the audio.o module (OSS), but this driver is for digital audio, not MIDI, and cannot work with it: Aug 19 17:11:56 linux kernel: hub.c: USB new device connect on bus1/2, assigned device number 6 Aug 19 17:11:56 linux kernel: usbaudio: device 6 audiocontrol interface 0 interface 1 MIDIStreaming not supported Aug 19 17:11:56 linux kernel: usbaudio: device 6 audiocontrol interface 0 has 0 input and 0 output AudioStreaming interfaces Then, it probed the usb-midi (OSS) driver, that claimed your device succesfully: Aug 19 17:11:56 linux kernel: usb-midi: Found MIDISTREAMING on dev 0a4d:008c, iface 1 Aug 19 17:11:56 linux kernel: usb-midi: Found MIDIStreaming device corresponding to Release 1.00 of spec. Aug 19 17:11:56 linux kernel: usb-midi: Found IN Jack 0x01 EMBEDDED Aug 19 17:11:56 linux kernel: usb-midi: Found IN Jack 0x02 EXTERNAL Aug 19 17:11:56 linux kernel: usb-midi: Found OUT Jack 0x03 EMBEDDED, 1 pins Aug 19 17:11:56 linux kernel: usb-midi: Found OUT Jack 0x04 EXTERNAL, 1 pins Aug 19 17:11:56 linux kernel: string descriptor 0 found (length = 4) Aug 19 17:11:56 linux kernel: usb-midi: langid(0) 0x0409 Aug 19 17:11:56 linux kernel: usb-midi: langid(match) 0x0409 Aug 19 17:11:56 linux kernel: usb-midi: fetchString(2) Aug 19 17:11:56 linux kernel: usb-midi: fetchString = 24 Aug 19 17:11:56 linux kernel: usbmidi: found [ MK-249 USB MIDI keyboard ] (0x0a4d:0x008c), attached: Aug 19 17:11:56 linux kernel: usbmidi: /dev/midi01: in (ep:81 cid: 0 bufsiz: 0) out (ep:02 cid: 0 bufsiz:64) At this point, you can use your keyboard with this driver, reading and writing to /dev/midi01. This is not ALSA, but OSS. After, you tried modprobe snd-usb-audio: Aug 19 17:11:57 linux kernel: usb.c: registered new driver snd-usb-audio Aug 19 17:11:57 linux kernel: usbaudio: device 6 audiocontrol interface 0 interface 1 MIDIStreaming not supported Aug 19 17:11:57 linux kernel: usbaudio: device 6 audiocontrol interface 0 has 0 input and 0 output AudioStreaming interfaces Aug 19 17:11:57 linux kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1966: cannot create a card instance 0 Aug 19 17:11:57 linux insmod: Using /lib/modules/2.4.18-4GB/kernel/sound/usb/snd-usb-audio.o Of course, this module can't find any hardware to work with, and fails. If you do a lsmod command, you should see the 'audio' and 'usb-midi' drivers. To unload them: # rmmod audio usb-midi I suggest you to add these modules to the /etc/hotplug/blacklist file: # cat /etc/hotplug/blacklist audio usb-midi snd-usb-audio snd-usb-midi You can see that I include the ALSA modules here. This prevents hotplug from loading them when you plug the keyboard, but this is not a problem if you use the right /etc/modules.conf setup, and the alsasound script. HTH Pedro --- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1refcode1=vs3390 ___ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
El Mié 14 Ago 2002 14:57, Michael Martin escribió: Does anyone know what the situation is with ALSA and usb midi in? I'm using successfully two USB-MIDI devices: a Roland/Edirol UM-2 and a Midiman Midisport 2x2 with ALSA. I have seen some reports about many other USB MIDI devices working, including Evolution's keyboards. I'm having trouble setting this up. I compiled and installed successfully (I think) the midid (usb midi daemon from http:// www.informatik.uni-halle.de/~ladischc/usbmidid.html), plugged a USB MIDI Compatible input device, followed instructions and the system log reported that I could not find the correct driver. The daemon loading system is based in linux-hotplug. I had seen that if a device has an AudioControl interface and a MIDIStreaming one, certain hotplug versions only report the AudioControl interface to the loader. You can try a dirty workaround for this, changing the first line of /etc/hotplug/usb.usermap from: snd-usbmidi 0x0180 0 0 0 0 0 0 0 0x01 0x03 0 0 to: snd-usbmidi 0x0180 0 0 0 0 0 0 0 0x01 0x01 0 0 Note that if you have also some USB digital audio devices in your system, this will try to load (erroneusly) the ALSA USB-MIDI daemon for these devices, as the AudioControl interface is a common interface subclass for both device types. Another reversed problem with hotplug may be that some kernel USB-audio modules can claim (erroneusly again) the MIDI divices. In this case, you can include the offending driver name in /etc/hotplug/blacklist and load the ALSA kernel drivers with kmod and /etc/modules.conf According to the URL above, usb midi has been integrated into the ALSA kernel, should I therefore download the latest ALSA, compile and install? If so, which version? The USB-MIDI daemon (user space driver) is deprecated now, and doesn't provide a rawmidi interface, only the sequencer client. You can try the kernel driver version instead. It is in the current CVS. See: http://www.alsa-project.org/download.php3 After you (hopefully) success with this stuff, a report about your working devices will be appreciated (CC: alsa-devel list), in order to include them in the alsa-matrix: http://www.alsa-project.org/alsa-doc/ Regards, Pedro --- 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-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] ALSA USB MIDI Input
Michael Martin wrote: I'm having trouble setting this up. I compiled and installed successfully (I think) the midid (usb midi daemon from http:// www.informatik.uni-halle.de/~ladischc/usbmidid.html), plugged a USB MIDI Compatible input device, followed instructions and the system log reported that I could not find the correct driver. What is the exact error messsage? The problem is probably that described in Pedro's mail. If it says something like device 123 is not claimed by any driver, this is OK, because usbmidid is not a driver but a daemon, and is loaded after that message has been printed. I compiled your usbmidid program and managed to install it fine, but I still need to know simply how to monitor MIDI input like a sysex or midi monitor program that can connect to the usb driver and how it connects to the usb driver? The usbmidid program creates ALSA sequencer ports. The alsa-lib package contains a test program for this named seq in the alsa-lib/test/ directory. Use ./seq client to show all clients (in most cases, usbmidid is client number 128), and ./seq port 128 to show all ports of that client. To monitor input events from port 0 on client 128, use ./seq decoder 128.0. The output is very verbose, but you should be able to see what's going on. You could use any other program which supports the ALSA sequencer, but there aren't (yet) many such programs, and from those, most use the API from ALSA version 0.5.x, which is outdated. The current ALSA version is 0.9.x, and is not backwards compatible. Most programs support the 'old' OSS API (RawMidi, the API used by the current Linux kernel drivers). The daemon doesn't support the OSS API, but ALSA can emulate it for its kernel drivers. Therefore, I'd suggest to use ALSA's kernel driver instead. According to the URL above, usb midi has been integrated into the ALSA kernel, should I therefore download the latest ALSA, compile and install? If so, which version? The latest released version is 0.9.0rc2 (from the ALSA homepage). This version does _not_ contain the USB MIDI driver, so you have to get the latest version from CVS, see http://www.alsa-project.org/download.php3 (at the bottom). There are scripts named cvscompile to compile the packages, see the INSTALL files for details. Do you know where I can find more information about USB MIDI with ALSA and USB MIDI on Linux? We're trying to test our USB Keyboard Controllers (Evolution keyboards are really just MIDI Input Controller devices) in Linux, but there seems to be little information to go on. (alsa-user readers: please don't read the next paragraph ;-) There is an OSS driver from Nagano Daisuke at http://member.nifty.ne.jp/Breeze/softwares/unix/usbmidi-e.html. This is worth considering because it doesn't require installation of the entire ALSA package, and, for the time being, an OSS driver may be adequate for most users. Some information about the ALSA driver can be found at http://www.alsa-project.org/alsa-doc/doc-php/template.php3?module=usb-midi. The section titled Before you start is only relevant for devices from Midiman. This page can be reached from the ALSA Soundcard Matrix at http://www.alsa-project.org/alsa-doc/. Evolution keyboards aren't yet listed there; yesterday, Patrick wrote: | I'm collecting them for now until I or Dan get the energy to add | them to the matrix. I don't think we can expect normal users to be able to download the latest code via CVS. It is probably better to wait until the next release (candidate) is released as an easy-to-install package. HTH Clemens --- 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-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
