Unterschiede zwischen den Revisionen 7 und 8
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== fc08:0101 and ChromeOS (HP14 / Falco.4389.92.0 / CHROME VERSION 42.0.2311.153) == === chrome://system/ -> syslog === {{{ 2015-05-21T14:23:27.410832+02:00 INFO kernel: [ 491.957953] usb 1-8: USB disconnect, device number 6 2015-05-21T14:28:59.882529+02:00 INFO kernel: [ 824.374435] usb 1-8: new full-speed USB device number 10 using xhci_hcd 2015-05-21T14:28:59.895503+02:00 INFO kernel: [ 824.387679] usb 1-8: New USB device found, idVendor=fc08, idProduct=0101 2015-05-21T14:28:59.895528+02:00 INFO kernel: [ 824.387714] usb 1-8: New USB device strings: Mfr=0, Product=2, SerialNumber=0 2015-05-21T14:28:59.895531+02:00 INFO kernel: [ 824.387734] usb 1-8: Product: USB MIDI Interface 2015-05-21T14:29:00.167608+02:00 ERR cras_server[7525]: USB card: vendor:fc08, product:0101, checksum:93b1e75a }}} |
USB-Midi Cable fc08:0101
Adapter USB to Midi In-Out LogiLink®
There are many USB MIDI cables out there that have buggy
firmware that reports it can do more than 4 bytes in a
packet when they can only properly handle 4 [...]
+ case USB_ID(0xfc08, 0x0101): /* Unknown vendor Cable */
ep->max_transfer = 4;
break;
/*
Source: Tarek Soliman - http://lists.alioth.debian.org/pipermail/pkg-alsa-devel/2011-April/008894.html - http://ftp.uni-kl.de/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc3
Devices like the ESI M4U, the RedOctane GuitarHero MIDI Interface, the Textech USB MIDI cable, and ones based on the QinHeng CH345 chip, claim to be standard compliant, but do not work if packets have more than four bytes.
Source: Clemens Ladisch http://www.audio-forums.com/re-usb-midi-keyboards-t77925.html
http://www.logilink.eu/showproduct/UA0037.htm und http://www.2direkt.de/i-sell2u/images/datenblatt/UA0037.pdf
$ sudo lsusb -v -d fc08:0101
Bus 005 Device 002: ID fc08:0101
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0xfc08
idProduct 0x0101
bcdDevice 2.50
iManufacturer 0
iProduct 2 USB MIDI Interface
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 101
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 9
bInCollection 1
baInterfaceNr( 0) 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 3 MIDI Streaming
bInterfaceProtocol 0
iInterface 0
MIDIStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 65
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 1 Embedded
bJackID 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 2 External
bJackID 2
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 1 Embedded
bJackID 3
bNrInputPins 1
baSourceID( 0) 2
BaSourcePin( 0) 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 2 External
bJackID 4
bNrInputPins 1
baSourceID( 0) 1
BaSourcePin( 0) 1
iJack 0
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 0
bRefresh 0
bSynchAddress 0
MIDIStreaming Endpoint Descriptor:
bLength 5
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 1
baAssocJackID( 0) 3
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 0
bRefresh 0
bSynchAddress 0
MIDIStreaming Endpoint Descriptor:
bLength 5
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 1
baAssocJackID( 0) 1
Device Status: 0x0000
(Bus Powered)
fc08:0101 and ChromeOS (HP14 / Falco.4389.92.0 / CHROME VERSION 42.0.2311.153)
chrome://system/ -> syslog
2015-05-21T14:23:27.410832+02:00 INFO kernel: [ 491.957953] usb 1-8: USB disconnect, device number 6 2015-05-21T14:28:59.882529+02:00 INFO kernel: [ 824.374435] usb 1-8: new full-speed USB device number 10 using xhci_hcd 2015-05-21T14:28:59.895503+02:00 INFO kernel: [ 824.387679] usb 1-8: New USB device found, idVendor=fc08, idProduct=0101 2015-05-21T14:28:59.895528+02:00 INFO kernel: [ 824.387714] usb 1-8: New USB device strings: Mfr=0, Product=2, SerialNumber=0 2015-05-21T14:28:59.895531+02:00 INFO kernel: [ 824.387734] usb 1-8: Product: USB MIDI Interface 2015-05-21T14:29:00.167608+02:00 ERR cras_server[7525]: USB card: vendor:fc08, product:0101, checksum:93b1e75a