Re: USB isochronous frame lost

2012-10-27 Thread Stefan May
e below. You can see that for every URB three isochronous frames are lost, and 29 packets are received. Are you sure that this is not a firmware problem? Best regards, Stefan May Oct 27 17:41:06 Brutus kernel: [53.512200] uvcvideo: uvc_v4l2_poll Oct 27 17:41:06 Brutus kernel: [53.512210]

Re: USB isochronous frame lost

2012-10-26 Thread Stefan May
. It is definitely a firmware problem. Could you imagine what was not respected there, so that almost every packet is dropped? Stefan May Am 26.10.2012 17:38, schrieb Alan Stern: On Fri, 26 Oct 2012, Stefan May wrote: it seems that data are interpreted differently. While the host is getting

Re: USB isochronous frame lost

2012-10-25 Thread Stefan May
e the reason? Can I force the host to use NTSC? Very best, Stefan May ## Host f6f8ac00 1236436296 S Ci:1:003:0 s 80 00 0002 2 < f6f8ac00 1236436489 C Ci:1:003:0 0 2 = f6f8ac00 1236437528 S Co:1:003:0

Re: USB isochronous frame lost

2012-10-25 Thread Stefan May
Dear Alan, thank you for your answer. I recorded the trace within the guest. Tonight, I record it for the host too in order to see, if that change happens. Very best, Stefan May Am 25.10.2012 17:01, schrieb Alan Stern: On Thu, 25 Oct 2012, Stefan May wrote: Dear USB-Developers, I am

USB isochronous frame lost

2012-10-24 Thread Stefan May
hint what is going wrong there? Do you know with parameters have to be respected on the firmware side? Below, I've attached lsusb output too. Best regards, Stefan May # Native Ubuntu ###