Experimental Physics and
Industrial Control System

Hi Terry,

 

Can you tell if there is some resource being consumed?  Memory, files open, etc?  Can you send me a copy of the initial error messages?  Unfortunately I don’t have a USB 2.0 Saturn I can test with.  

 

I did verify recently that on Linux it is not possible to restart the IOC without power-cycling the USB 2.0 Saturn.  This does not happen on Windows, and it does not happen on Linux with the USB 1.0 or parallel port versions of the Saturn.

 

Mark

 

 

 

Hi.

I’m running two saturn-vortex spectrometers connected via usb2 to Centos 5 linux IOCs which are running the dxp2-8-1 packages with epics 3.14.8.2. I have libusb 0.1.12-5.1

It all works initially, (after a bit of a tussle with usb permissions) but the usb on both appears to fall over after about 20 hours of continuous running and the xerxes.c errors start, apparently about not being able to contact the vortex anymore.  (failed to locate detChan 0 and so-on)

 

To fix it, I power-cycle the vortex and restart Epics.  Just re-plugging the usb doesn’t do it.

 

Has anyone else seen this sort of thing and have any suggestions about how to cure it? I’m sorry I’m short on detail, still looking.

 

Thanks.

 

 

Dr. Terry Cornall | Senior Controls  Engineer | Australian Synchrotron p: (03) 8540 4280 | f: (03) 8540 4200 [email protected] | www.synchrotron.org.au 800 Blackburn Road, Clayton, Victoria 3168