[Nut-upsdev] libusb_get_string: invalid argument

[Greg Hersch]

On Sun, 7 Jun 2015, Charles Lepple wrote:

> [please use reply-all to include the list, as the list does not override the Reply-To header.]
>
> On Jun 7, 2015, at 5:02 PM, Greg Hersch <hersch.greg at gmail.com> wrote:
>
>> Here is the driver debug log. If I just let it run, it pops up with
>> libusb_get_string_invalid argument over and over again, mixed in the
>> debug output. seems to be several issues reported in the log, but they
>> arent easily interpreted.
>
> Does the libusb_get_string error occur only every 30 seconds or so?

Yes - thats correct. perhaps more like every 15 sec.

>
>>   1.164089     Path: UPS.ffff0015.[1].ffff00c5, Type: Feature,
>> ReportID: 0x9b, Offset: 0, Size: 16, Value: 3
>>   1.172696     libusb_get_report: Value too large for defined data type
>>   1.172928     Can't retrieve Report c2: Value too large for defined data type
>
> The entries with hex numbers in the path aren't important - the driver tries to dump them once at startup, then does not refer to them again.

ok thanks

>
>>   3.402389     libusb_get_string: Invalid argument
>
> I think this is from trying to retrieve the value corresponding to "device.part" - which should also only be attempted once at startup.
>
> Try the attached patch?

Will do. i'll write back with how it goes - thank you

>
> Also, I would be interested in the output of "lsusb -vvv -d 09ae:" for your UPS.
>
> -- 
> Charles Lepple
> clepple at gmail
>
>
>