(hope that's correct to post that way through email since I'm just adding an answer to a specific question in a specific thread), here we go:

Daniel Mack daniel at zonque.org Sun Sep 7 13:39:12 CEST 2014 Previous message: [alsa-devel] AKAI EIE PRO Next message: [alsa-devel] AKAI EIE PRO Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] On 09/07/2014 01:30 PM, humbert.olivier.1 at free.fr wrote:

...

if that can help, we had an user on http://www.linuxmao.org with an EIE PRO. Here you have his lsusb -v :

Bus 001 Device 006: ID 09e8:0010 AKAI Professional M.I. Corp. Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 255 Vendor Specific Subclass bDeviceProtocol 255 Vendor Specific Protocol

According to the tech specs, this should be a USB hub, but it isn't. Or is this just one of the sub-devices? What does 'lsusb -t' say, and does Linux see something like a mouse or mass storage device when connected to one of the hub ports?

To test accordingly to the question a USB device (Webcam C905) is plugged in one of the EIE Pro. hub ports

1) AKAI EIE Pro *OFF*:

------------------- $ lsusb Bus 002 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp. Bus 005 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 006 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 005 Device 004: ID 174c:5106 ASMedia Technology Inc. Transcend StoreJet 25M3 Bus 006 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer Bus 005 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard Bus 005 Device 007: ID 047d:1020 Kensington Expert Mouse Trackball Bus 005 Device 012: ID 058f:9254 Alcor Micro Corp. Hub -------------------

2) AKAI EIE Pro *ON*:

------------------- $ lsusb Bus 002 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp. Bus 005 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub ven. nov. 28 19:27:58 CET 2014 Bus 006 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 005 Device 004: ID 174c:5106 ASMedia Technology Inc. Transcend StoreJet 25M3 Bus 005 Device 018: ID 0409:005a NEC Corp. HighSpeed Hub Bus 006 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer Bus 005 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard Bus 005 Device 007: ID 047d:1020 Kensington Expert Mouse Trackball Bus 005 Device 012: ID 058f:9254 Alcor Micro Corp. Hub Bus 005 Device 019: ID 046d:080a Logitech, Inc. Portable Webcam C905 Bus 005 Device 020: ID 09e8:0010 AKAI Professional M.I. Corp. -------------------

------------------- $ lsusb -t /: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M |__ Port 7: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M /: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 1: Dev 6, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 1: Dev 6, If 1, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 2: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M |__ Port 3: Dev 12, If 0, Class=Hub, Driver=hub/4p, 12M |__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M |__ Port 4: Dev 18, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 1: Dev 19, If 0, Class=Video, Driver=uvcvideo, 480M |__ Port 1: Dev 19, If 1, Class=Video, Driver=uvcvideo, 480M |__ Port 1: Dev 19, If 2, Class=Audio, Driver=snd-usb-audio, 480M |__ Port 1: Dev 19, If 3, Class=Audio, Driver=snd-usb-audio, 480M |__ Port 4: Dev 20, If 0, Class=Vendor Specific Class, Driver=, 480M |__ Port 4: Dev 20, If 1, Class=Vendor Specific Class, Driver=, 480M /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M -------------------

3) Then, the Webcam plugged in the EIE Pro. has been unplugged:

------------------- $ lsusb -t /: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M |__ Port 7: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M /: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 1: Dev 6, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 1: Dev 6, If 1, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 2: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M |__ Port 3: Dev 12, If 0, Class=Hub, Driver=hub/4p, 12M |__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M |__ Port 4: Dev 18, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 4: Dev 20, If 0, Class=Vendor Specific Class, Driver=, 480M |__ Port 4: Dev 20, If 1, Class=Vendor Specific Class, Driver=, 480M /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M -------------------

------------------- $ lsusb Bus 002 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA Technology Corp. Bus 005 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 006 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 005 Device 004: ID 174c:5106 ASMedia Technology Inc. Transcend StoreJet 25M3 Bus 005 Device 018: ID 0409:005a NEC Corp. HighSpeed Hub Bus 006 Device 003: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer Bus 005 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard Bus 005 Device 007: ID 047d:1020 Kensington Expert Mouse Trackball Bus 005 Device 012: ID 058f:9254 Alcor Micro Corp. Hub Bus 005 Device 020: ID 09e8:0010 AKAI Professional M.I. Corp. -------------------

Sincerely hoping it'll help to include full support in ALSA for the AKAI EIE Pro as it's very good stuff, nicely built and convenient (for its hub) to USB ports eaters as we're all in the music phylum :-)

Cheers!