usbhid-ups does not disable beeper with Eaton 3S550 about nut HOT 4 CLOSED

Hi Arnaud,
any news on the issue?

Have being using Eaton 3S700 facing the same issue:

• nut-2.7.4 (compiled from source)
• linux-2.4.28 (uClibc 0.9.27)
• libusb-0.1.12 (compiled from source)

Please let me know, if any debugging info is required. So far OK is returned, but beeper is not disabled:
1) upsc 3s ups.beeper.status
enabled
2) upscmd -uMyUser -pMyPassword 3s beeper.disable
OK
3) upsc 3s ups.beeper.status
enabled

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Hi Sergey / @stalchuk
just to say that I'm looking at it and think I've found the issue. However, I'll need a bit more time to test my findings and implement it in a way that does not generate regression for other units.
This will have to happen by the end of this (busy) week, since I'm on training next one and part of the following...
For the sake of completion, here are some details:
historically, we were using the HID Path "UPS.PowerSummary.AudibleAlarmControl" for "ups.beeper.status" and related commands (beeper.{enable,disable,mute,on,off}
However, some recent and/or smaller units use a different path ("UPS.BatterySystem.Battery.AudibleAlarmControl"), while still providing the historic one (which however doesn't act as expected).

I've tested successfully this new HID Path with a 3S 550, but still have to check for non regression on older units.

Still, since you compile nut from source, while waiting for the proper fix in NUT, you can simply replace the above mentioned path.

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Thanks for your patience Sergey!

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Thanks for the fix, Arnaud!

Now it works as expected)

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