Citeren Danilo Godec <[email protected]>:

If the UPS really only uses the RX and TX pins, the setting of
'cablepower' is irrelevant.
Yes, the supplied RS232 cable only has three connected pins. Without
setting 'cablepower=none', the driver didn't detect the UPS.

Again, the driver itself doesn't care about this setting, this is purely for the UPS. What could be happening is that you have a 'smart' connector that attaches to the serial port and requires this setting to power a small circuit in the connector. I could also be that this setting prevents another program from probing/messing with the serial port. You're not running something like Modem Manager are you?

[...]

I tried 'cypress', 'krauler', 'ippon' and 'phoenix'. The driver only
detects the UPS with 'phoenix'.

Right, I just wanted to know if you actually tried the other subdrivers. Clearly, the right one for this model is the 'phoenix' type.

Best regards, Arjen
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