[Nut-upsuser] USBDEVFS_CONTROL error ?

John Darrah xyllyx at gmail.com
Sun Jan 27 15:27:07 UTC 2008


On Sun, Jan 27, 2008 at 10:46:13AM +0100, Arjen de Korte wrote:
> 
> > Does the following error message have a specific meaning:
> >
> > usb 1-1: usbfs: USBDEVFS_CONTROL failed cmd usbhid-ups rqt 161 rq 1 len 2
> > ret -75
> 
> [...]
> 
> > Can't retrieve Report 49 (75): Value too large for defined data type
> 
> The UPS is sending us here more data than we expect. The size of reports
> is calculated from the 'report descriptor' we retreive from the UPS.
> Apparently, when asking for this data, it returns more data than we
> expected and therefor this error will be shown.
> 
> Unless some vital information about the state of the UPS is missing, I
> wouldn't worry too much about it. Most probably, it is a bug in the UPS
> firmware (which is all too common) you can't fix yourself.
> 
> Best regards, Arjen
> -- 
> Eindhoven - The Netherlands
> Key fingerprint - 66 4E 03 2C 9D B5 CB 9B  7A FE 7E C1 EE 88 BC 57
> 
> 

I forgot to mention that this UPS is a TrippLite Omni1000 LCD

Thanks for the information.

-- 
John



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