On 3/28/20 4:41 PM, Charles Lepple wrote:
On Mar 27, 2020, at 11:51 PM, Ben Kamen <[email protected]> wrote:
I'm playing with a new CentOS 8 with a cyperpower OR500 (a smaller sibling to
the OR700) plugged in via USB.
GNOME sees the UPS... but NUT does not (even if I shut down gnome).
[root@delp ups]# upsdrvctl start
Network UPS Tools - UPS driver controller 2.7.4
Network UPS Tools - Generic HID driver 0.41 (2.7.4)
USB communication driver 0.33
No matching HID UPS found
Driver failed to start (exit status=1)
Annoyingly, the USB listeing is for a PR1500 even though it really IS an OR500
No kidding. I noticed that too.
[root@delp ups]# lsusb -d 0764:0601 -v
Bus 006 Device 002: ID 0764:0601 Cyber Power System, Inc. PR1500LCDRT2U UPS
^ that is based on the usb.ids database, not what the UPS returns. All of the
CPS UPSes seem to be either 0501 or 0601.
iProduct 1 UPS OR500
^ this model string (the part after "1") comes from the UPS itself.
Yep - I realize all this - I just throught I'd supply it in case any responder
wanted to see it.
What else can I provide to help debug this?
And -- can gnome and NUT access the UPS at the same time or do I need to
disable Gnome somehow?
Short answer, no, they can't easily share.
The NUT drivers will attempt to grab the driver away from other kernel drivers or
userspace programs if it has permission to open the device node, but the "No
matching HID UPS" error is often caused by permissions issues. Was the UPS plugged
in to the USB port before you installed NUT? If so, try unplugging and re-plugging the
USB cable. The /dev node (it will change, but using your previous lsusb output, something
like /dev/bus/usb/006/002) should allow the NUT system user to have read/write access,
frequently through the group permission bits.
Open to suggestions from others about the Gnome side, though maybe the
permissions part is sufficient.
I try those things. I didn't think Gnome and NUT played together. (I don't
remember it every being that way -- but I figured I'd ask in case something
changed with RedHat's latest.)
Thanks for the reply Charles. I'll see what else I can do with this UPS that
might allow NUT to be a netserver without USB. (There is a SNMP card installed)
Cheers,
-Ben
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