Periodic USB failure

[Jon Smirl]

I have a NSLU2 providing audio for my multi-room audio system. It has
a USB 1.0 hub attached and three CMedia USB audio adapters plugged
into it. These USB devices consistently crash once or twice per day
but then restart without problem. I have dozens of these
crash/restarts in my log.

The system runs 24/7 with music being streamed to the devices
continuously. I control the audible music in the rooms by controlling
the amp which is attached after the USB audio devices.

***@NSLU2:/var/log$ uname -a
Linux NSLU2 2.6.18-5-ixp4xx #1 Thu Aug 30 16:47:13 UTC 2007 armv5tel GNU/Linux


Jan 15 20:59:21 NSLU2 -- MARK --
Jan 15 21:19:21 NSLU2 -- MARK --
Jan 15 21:39:22 NSLU2 -- MARK --
Jan 15 21:42:26 NSLU2 kernel: usb 2-1.1: USB disconnect, address 84
Jan 15 21:42:27 NSLU2 kernel: usb 2-1.3: USB disconnect, address 85
Jan 15 21:42:27 NSLU2 kernel: usb 2-1.4: USB disconnect, address 86
Jan 15 21:42:27 NSLU2 kernel: usb 2-1: reset full speed USB device
using ohci_hcd and address 74
Jan 15 21:42:27 NSLU2 kernel: usb 2-1.1: new full speed USB device
using ohci_hcd and address 87
Jan 15 21:42:28 NSLU2 kernel: usb 2-1.1: configuration #1 chosen from 1 choice
Jan 15 21:42:28 NSLU2 kernel: input: C-Media USB Headphone Set as
/class/input/input79
Jan 15 21:42:28 NSLU2 kernel: input: USB HID v1.00 Device [C-Media USB
Headphone Set ] on usb-0000:00:01.1-1.1
Jan 15 21:42:28 NSLU2 kernel: usb 2-1.3: new full speed USB device
using ohci_hcd and address 88
Jan 15 21:42:28 NSLU2 kernel: usb 2-1.3: configuration #1 chosen from 1 choice
Jan 15 21:42:28 NSLU2 kernel: input: C-Media USB Headphone Set as
/class/input/input80
Jan 15 21:42:28 NSLU2 kernel: input: USB HID v1.00 Device [C-Media USB
Headphone Set ] on usb-0000:00:01.1-1.3
Jan 15 21:42:29 NSLU2 kernel: usb 2-1.4: new full speed USB device
using ohci_hcd and address 89
Jan 15 21:42:29 NSLU2 kernel: usb 2-1.4: configuration #1 chosen from 1 choice
Jan 15 21:42:29 NSLU2 kernel: input: C-Media USB Headphone Set as
/class/input/input81
Jan 15 21:42:29 NSLU2 kernel: input: USB HID v1.00 Device [C-Media USB
Headphone Set ] on usb-0000:00:01.1-1.4
Jan 15 21:59:22 NSLU2 -- MARK --
Jan 15 22:19:23 NSLU2 -- MARK --
Jan 15 22:39:23 NSLU2 -- MARK --
--
Jon Smirl
***@gmail.com

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