I'm running Fedora 34 on three Linux systems that are connected to USB
UPSes. I have installed NUT (Network UPS Tools) on all three.
If I connect with nut-server stopped, upower detects the UPS:
# upower -d
Device:
/org/freedesktop/UPower/devices/line_power_tps6598x_source_psy_i2c_INT3515o02_tps6598xx0
native-path: tps6598x-source-psy-i2c-INT3515:02-tps6598x.0
power supply: yes
updated: Wed 30 Mar 2022 08:14:08 AM CDT (87 seconds ago)
has history: no
has statistics: no
line-power
warning-level: none
online: no
icon-name: 'ac-adapter-symbolic'
Device: /org/freedesktop/UPower/devices/ups_hiddev0
native-path:
/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.2/1-2.2:1.0/usbmisc/hiddev0
vendor: American Power Conversion
model: Back-UPS RS 1500G
serial: 4Q1805P11448
power supply: yes
updated: Wed 30 Mar 2022 08:15:31 AM CDT (4 seconds ago)
has history: yes
has statistics: yes
ups
present: yes
state: fully-charged
warning-level: none
time to empty: 1.6 hours
percentage: 100%
icon-name: 'battery-full-charged-symbolic'
History (charge):
1648646131 100.000 fully-charged
1648646101 0.000 unknown
History (rate):
1648646101 0.000 unknown
Device: /org/freedesktop/UPower/devices/DisplayDevice
power supply: yes
updated: Wed 30 Mar 2022 08:15:31 AM CDT (4 seconds ago)
has history: no
has statistics: no
ups
present: yes
state: fully-charged
warning-level: none
time to empty: 1.6 hours
percentage: 100%
icon-name: 'battery-full-charged-symbolic'
Daemon:
daemon-version: 0.99.13
on-battery: no
lid-is-closed: no
lid-is-present: no
critical-action: PowerOff
Then, if I start 'nut-server' (systemctl start nut-server), the UPS
disappears from upower.
# upower -d
Device:
/org/freedesktop/UPower/devices/line_power_tps6598x_source_psy_i2c_INT3515o02_tps6598xx0
native-path: tps6598x-source-psy-i2c-INT3515:02-tps6598x.0
power supply: yes
updated: Wed 30 Mar 2022 08:14:08 AM CDT (109 seconds ago)
has history: no
has statistics: no
line-power
warning-level: none
online: no
icon-name: 'ac-adapter-symbolic'
Device: /org/freedesktop/UPower/devices/DisplayDevice
power supply: yes
updated: Wed 30 Mar 2022 08:15:45 AM CDT (12 seconds ago)
has history: no
has statistics: no
unknown
warning-level: none
percentage: 0%
icon-name: 'battery-missing-symbolic'
Daemon:
daemon-version: 0.99.13
on-battery: no
lid-is-closed: no
lid-is-present: no
critical-action: PowerOff
The visible effect of this issue is that the XFCE4 Power Manager applet
doesn't show the status of the UPS.
Once upower has forgotten the UPS, I can make it remember it by running:
# systemctl stop nut-server
# systemctl restart upower
but it will forget it again if I run:
# systemctl start nut-server
Is this a feature or a bug?
Thanks,
Dave
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