[Nut-upsuser] UPS Liebert GXT-3

Charles Lepple clepple at gmail.com
Thu Feb 21 22:35:24 UTC 2013

On Feb 21, 2013, at 3:18 PM, Marcelo Roccasalva wrote:

>          wDescriptorLength     260
>          Warning: incomplete report descriptor
>          Report Descriptor: (length is 99)

This is not good. I don't know much about this UPS - if it has a serial port, have you ever gotten that to work? (Some other vendors tend to only support using one interface after the UPS starts up.)

Also, are there any lines in dmesg that seem to refer to this UPS?

If the NUT driver is doing something that the UPS firmware doesn't expect during initialization, we might be able to attack this from another angle by capturing the communication with the vendor monitoring program. (However, it is disconcerting that standard USB queries for retrieving descriptors are not working properly.)

Charles Lepple
clepple at gmail

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