On recent kernels with some USB UPSs, sys-power/nut will get many USB events it doesn't want to handle. It normally syslog's for those events, which can result in lots of clutter in the logs (i.e. 7 messages every 5 seconds), a la <https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=160700>. Attachment 75508 [details, diff] is a simple patch to nut which changes the appropriate upslogx() calls to usbdebugx() calls. I've been using it for a few months with no problems.
Created attachment 87023 [details, diff] Patch to nut ebuild This is a patch to nut's ebuild to apply the patch in attachment 75508 [details, diff] to nut. It should apply to most recent versions of nut, including 2.0.2 and 2.0.3.
NAK. Stop using hidups and use newhidups instead.