[Nut-upsuser] Unable to use nut-2.7.4 with Eaton 5E1500I USB

Charles Lepple clepple at gmail.com
Mon Jun 19 23:27:31 UTC 2017

On Jun 19, 2017, at 10:45 AM, Manuel Wolfshant wrote:
> #lsusb -vvv -d 0463:ffff
> Bus 002 Device 012: ID 0463:ffff MGE UPS Systems UPS
>       HID Device Descriptor:
>          bLength                 9
>          bDescriptorType        33
>          bcdHID               1.10
>          bCountryCode           33 US
>          bNumDescriptors         1
>          bDescriptorType        34 Report
>          wDescriptorLength     549
>          Warning: incomplete report descriptor
>          Report Descriptor: (length is 9)
>            Item(Main  ): (null), data=none
>            Item(Main  ): (null), data=none
>            Item(Main  ): (null), data=none
If I recall, this is equivalent to the usbhid-ups "method 2" approach to retrieving the descriptor. 

>> If not (lsusb returns "Report Descriptors:" / "** UNAVAILABLE **"), it seems like the two options are to upgrade the kernel (which I understand is an issue),
> unfortunately it is. If mandatory I guess I can do some tricks with cron to rollback a known good situation but given that I have no idea what failed during the previous attempt ( nothing got logged -- I suspect a kernel panic although I have no idea why would this happen ) I'd prefer to avoid, if possible.
>>  or try to roll back the userspace tools to match what was current when the kernel was current.
> I am afraid I did not understand this part...

If there are newer kernels out there, it is possible that some of the userspace tools (usbutils, libusb, etc.) are expecting a newer kernel. Is it possible to downgrade any of them, to test with package versions that were released at the same time as the 2.6.32 kernel?

More information about the Nut-upsuser mailing list