USB soundrecording device not recognized / recognized at random

English Hardware
#1

Hi I have 2 Behringer recording interfaces UMC404 and UMC 1808 There seamed to be no problem with UMC404 but UMC1808 developed a problem or Linux/laptop HW developed a problem in sofar that the recording unit is sometimes recognized othertimes not. Sometimes changin the usb cable helps. For more info , here is the system log

 2019-10-25T06:20:06.186508+10:00 linux-awz9 kernel:   977.960008] usb 4-3: new full-speed USB device number 30 using ohci-pci
2019-10-25T06:20:06.374439+10:00 linux-awz9 kernel:   978.151275] usb 4-3: not running at top speed; connect to a high speed hub
2019-10-25T06:20:06.378461+10:00 linux-awz9 kernel:   978.155178] usb 4-3: invalid descriptor for config index 0: type = 0x2, length = 2
2019-10-25T06:20:06.378499+10:00 linux-awz9 kernel:   978.155185] usb 4-3: can't read configurations, error -22
2019-10-25T06:20:06.574476+10:00 linux-awz9 kernel:   978.348101] usb 4-3: new full-speed USB device number 31 using ohci-pci
2019-10-25T06:20:06.758445+10:00 linux-awz9 kernel:   978.535178] usb 4-3: not running at top speed; connect to a high speed hub
2019-10-25T06:20:06.762419+10:00 linux-awz9 kernel:   978.539177] usb 4-3: invalid descriptor for config index 0: type = 0x2, length = 2
2019-10-25T06:20:06.762452+10:00 linux-awz9 kernel:   978.539183] usb 4-3: can't read configurations, error -22
2019-10-25T06:20:06.770487+10:00 linux-awz9 kernel:   978.544098] usb usb4-port3: attempt power cycle
2019-10-25T06:20:07.270504+10:00 linux-awz9 kernel:   979.044106] usb 4-3: new full-speed USB device number 32 using ohci-pci
2019-10-25T06:20:07.302531+10:00 linux-awz9 kernel:   979.077225] usb 4-3: not running at top speed; connect to a high speed hub
2019-10-25T06:20:07.306531+10:00 linux-awz9 kernel:   979.081226] usb 4-3: invalid descriptor for config index 0: type = 0x2, length = 2
2019-10-25T06:20:07.306577+10:00 linux-awz9 kernel:   979.081234] usb 4-3: can't read configurations, error -22
2019-10-25T06:20:07.498486+10:00 linux-awz9 kernel:   979.272082] usb 4-3: new full-speed USB device number 33 using ohci-pci
2019-10-25T06:20:07.530504+10:00 linux-awz9 kernel:   979.305688] usb 4-3: not running at top speed; connect to a high speed hub
2019-10-25T06:20:07.531703+10:00 linux-awz9 kernel:   979.309184] usb 4-3: invalid descriptor for config index 0: type = 0x2, length = 2
2019-10-25T06:20:07.531733+10:00 linux-awz9 kernel:   979.309191] usb 4-3: can't read configurations, error -22
2019-10-25T06:20:07.543809+10:00 linux-awz9 kernel:   979.316067] usb usb4-port3: unable to enumerate USB device

…it says there " usb 4-3: not running at top speed; connect to a high speed hub " and " usb 4-3: invalid descriptor for config index 0: type = 0x2, length = 2 " what does it mean ? Any idea how to solve the problem ? Thanks

#2

Laptop model? Are you connecting via a USB 3.0 port or USB 2.0 port?

#3

Are you able to test the device of interest with another PC?

#4

Hi,

The Laptop is USB 2.0 connection , The recording interface is USB 2.0

Info center data when the the usb connection is working

https://thumbs2.imagebam.com/0c/36/dd/85a4831324026313.jpg](http://www.imagebam.com/image/85a4831324026313)

Still have to test it on a windows machine.

I am at a loss , can’t pinpoint a pattern … The usb cable does have a gost arrester (magnet on the cable) .

can’t test it on my desk top since I am on a different location.

The laptop is approx 8 year old. I upgraded the RAM and installed the SSD drive.

Anyway if you have any further ideas please let me know … thanks

#5

Worn USB sockets/plugs perhaps?

#6

Well , I tested the audio interface on a windows10 labtop, the recording interface was detected immediately !!!

Don’t think there are worn connectors but must admit I thought along those ways too.

So what is left

the hardware of the Toshiba labtop and Linux … gut-feel it has something to do with Linux ! something is missing …

There is a program in the repostitory called " USBviewer ". This program requires

USB compiled into the kernel
USB core modules loaded
and
usbdevfs filesystem mounted

…and then you apparently can interogate usb connection/devices.

…so how do I go about it ? …what do I have to install ?

… and , if I install the above , what implications does it have on my system ?

Thanks and best regards

#7

I don’t think it’s linux. Behringer are known for their devices to work fine with linux.

#8

“UMC 1808” or UMC1820?
Try it with another machine.

#9

The OP already did that (refer earlier in the thread).

#10

Well … I tried it again with the windows machine … and IT DID NOT WORK UNDER WINDOWS EITHER !!! intermitaned fault as it is .

The thing what windows did however, it gave me a msg that the unit is faulty.

Well that makes it a WARRANTY CLAIM !!!

I wish that Linux would have given me a similar msg rather then nothing or only hidden in the systems log with some obscure error msg.

The other thing is a diagnostic tool for usb devices would be very helpful ,.

So coming back to the usbviewer mentioned above , what would I have to do to make it happen ?

Thanks for your help and best regards

otto_oz

#11

I’m not surprised to read this.

I wish that Linux would have given me a similar msg rather then nothing or only hidden in the systems log with some obscure error msg.

Such a message could be misleading anyway, as the symptoms may be caused by other intermediate issues.

The other thing is a diagnostic tool for usb devices would be very helpful ,.

So coming back to the usbviewer mentioned above , what would I have to do to make it happen ?

Well, it’s easy enough to install, but I don’t really see the point.