Em Wed, 9 Jan 2019 08:51:29 +0500 Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> escreveu: > I upgraded kernel to 5.0 rc1 and the error message "Unknown > pixelformat 0x00000000" are disappeared. > > Instead I see not obvious message "uvcvideo: Non-zero status (-71) in > video completion handler." This is unrelated. Usually, you get -71 errors when there's a problem with usb cabling. This is what it means: #define EPROTO 71 /* Protocol error */ >From Documentation/driver-api/usb/error-codes.rst: ``-EPROTO`` [#f1]_, [#f2]_ a) bitstuff error b) no response packet received within the prescribed bus turn-around time c) unknown USB error > Maybe in this case better to write "Video format XXX not supported" ? The message about the lack of support for P010 is still there: [ 5.218031] uvcvideo: Unknown video format 30313050-0000-0010-8000-00aa00389b71 The best solution would be to really convert this into something that applications can benefit, e. g. exporting the P010 format to userspace. > It would help quickly understand that is culprit here. > > > -- > Best Regards, > Mike Gavrilov. Thanks, Mauro
