The ACID build on one of our repeaters crashes occasionally after repeatedly recording "Cannot submit data pipe for urb 0, error -22: internal error" I've been unsuccessful at locating details of this error online. Is there a list of such errors available? I'm running two nodes on the server. I've had issues when rebooting where one node operates normally, and the other delivers choppy audio to the radio. The URI green light toggles much slower than normal. I may have an internal USB hardware issue. They are both on the same internal bus, and both radios are in use, one a repeater using a GE MSTR II, and the second is used as a UHF link. The computer is a ATOM Mini-ITX with a SATA SSD. Once they are working after a reboot, they go for quite a while. This last failure occurred after a "reboot" command. I read somewhere that a similar error was caused by a known CentOS bug, so I'm wondering if I need to move to DIAL to get a "fix," but would like to understand it better before just moving. I don't like lurking issues :-) It operated flawlessly for about two years prior to this. This is the second time in the past month, or so, that we've dealt with this. Any thoughts? Thanks, Bob kk6ecm