Had some time this morning to do some trouble shooting based on some feedback, here are the results to your questions and suggestions (which I thank you for by the way!)
"What is the vintage of the computer, and how long has it been in operation? Is this a new "feature" that has appeared after years of use, or is this a new build exhibiting this from the get go?"
Computer is an IBM Lenovo ThinkCentre with a P4 processor, about 5 years old. Has been running as a linux box for over a year. This problem started about 6 months ago, so it was not always an issue.
"I wonder if the computer is logically moving the USB device. When this occurs, what are the results of executing lsusb at the Linux command line after exiting the CLI> prompt? Does it find the URI, and at the address shown in the error (4-1)? (lsusb will have two leading zeros... e.g 004-001)"
[root@QTH_Server ~]# lsusb
Bus 004 Device 003: ID 0d8c:013a C-Media Electronics, Inc.
Bus 004 Device 001: ID 0000:0000
Bus 005 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
So it appears that the box is moving the device, so I do I fix that? In the error, the location was 4-1
One test you can make on a functioning system (uri green light flashing) is pull the USB cable from the URI wait a few seconds and plug it back in. If the flashing green does not recover then your SW would not be able to recover from the USB disruptions.
The green light starts flashing like normal after I unplug the USB cable, and plug it back in. Here is the information from the CLI prompt when I do that...
[Oct 4 06:35:04] WARNING[4502]: chan_usbradio.c:2073 used_blocks: Error reading output space
== Set device 4-1 to usb29912
[Oct 4 06:35:13] WARNING[4503]: chan_usbradio.c:1728 hidthread: Loaded parameters from usbradio_tune_usb29912.conf for device usb29912 .
USB has it?s issues at times. It?s probably not your software but you should update if you haven?t in a while. More likely is the USB bus is getting glitched. There might be an indication of that in dmesg (type dmseg as the Linux prompt).
usb 4-1: usbfs: USBDEVFS_CONTROL failed cmd asterisk rqt 161 rq 1 len 4 ret -71
usb 4-1: USB disconnect, address 2
usb 4-1: new full speed USB device using uhci_hcd and address 3
usb 4-1: configuration #1 chosen from 1 choice
input: C-Media Electronics Inc. USB PnP Sound Device as /class/input/input2
input,hidraw0: USB HID v1.00 Device [C-Media Electronics Inc. USB PnP Sound Device] on usb-0000:00:1d.2-1
I did notice that someone or something was trying to "hack" into the box. LOTS of attempts to connect, so I fixed that with a block of the offending IP in iptables, not sure if that has something to do with it or not.
Thanks again everyone!
Steve Denbow | KD8BIW