Hi,

one Fedora user has reported this issue with cyberpower 800AVR using usbhid-
ups

> > The change in SVN r2098 triggers the problem. By looking at the usbmon
> > output I see that this device fails to respond to the get_report
> > requests when the request size is 512 bytes.
> 
> Thanks for reporting this. Can you try if fixing the size to 8 bytes
> (instead of SMALLBUF) helps? You may wish to change both of the
> following lines in in 'drivers/libhid.c':
> 
> 144           unsigned char   buf[8];
> 472           unsigned char   buf[8];

He confirmed this fixes the problem for him too

Michal


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