Ubuntu 22.04 NUT 2.7.4 CYberPower CP1500AVRLCDa using usbhid-ups Hello,
The above combination works well for a few minutes -- including shutdown on pulling power or on upsmon -c fsd, notifications etc. Until the driver starts reporting error in libusb_get_string, kernel messages on USDEVFS_CONTROL failures and upsmon logs 'Data stale' It seems the UPS does not support interrupt transfer (or is buggy). On adding pollonly=enabled to ups.conf, everything appears to be working fine again. Is this a known issue? I have seen a number of success reports on this model, none mentioning the need for pollonly, so wondering whether I should troubleshoot this further. Thanks, Selva _______________________________________________ Nut-upsuser mailing list Nut-upsuser@alioth-lists.debian.net https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
