[Nut-upsuser] libusb_get_interrupt: error reading from interrupt endpoint /dev/ugen0.1

Charles Lepple clepple at gmail.com
Thu Mar 24 02:17:31 UTC 2011

On Mar 23, 2011, at 12:09 PM, John Bayly wrote:

> Using an Eaton Evolution S 3000 (usbhid-ups) 2.6.0 on FreeBSD 7.3.  
> After checking the debug log for an unrelated reason I saw that it  
> was being swamped by the following message:

The USB stack in FreeBSD prior to 8.0 did not lend itself to being  
precisely controlled from userspace by libusb. It sounds like you are  
seeing slightly different problems than I saw while trying to make  
tripplite_usb work under FreeBSD, but the common symptom was the  
interrupt endpoints. (FreeBSD prior to 8.0 seems to poll the endpoints  
more frequently than userspace code reads from them, and I often saw  
partial packets dropped when the buffer filled up.)

How do things work if you add the "pollonly" option to the  
configuration file?

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