Date: Thu, 26 Nov 2020 16:36:44 +0100 From: Thomas Steen Rasmussen <thomas@gibfest.dk> To: Hans Petter Selasky <hps@selasky.org> Cc: usb@freebsd.org Subject: Re: webcamd, usb and two webcams - only one works Message-ID: <18196ba8-f507-9318-6f00-46f0f55e6e20@gibfest.dk> In-Reply-To: <0330eee1-e22c-82b9-1c50-4e8c42bf9466@gibfest.dk> References: <c11c1a2f-306f-3cd9-825f-4c39fd250d50@gibfest.dk> <9a382539-c90d-91b9-bfac-f36c0f19d3f7@selasky.org> <723be24d-b2fe-85df-4961-5483004050e8@gibfest.dk> <f49afce8-e055-d432-b374-4af10bf7d70e@selasky.org> <cdadc525-e4f9-6cde-26f3-15d7594bd5ee@gibfest.dk> <6c527c1f-62a6-3089-50b8-02cda74b4eb1@selasky.org> <13180470-0336-b115-ce31-bc392ff8da76@gibfest.dk> <638a1059-f8dc-59c5-21ff-aabc380cac28@selasky.org> <0330eee1-e22c-82b9-1c50-4e8c42bf9466@gibfest.dk>
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On 11/26/20 4:26 PM, Thomas Steen Rasmussen wrote: > On 11/26/20 4:08 PM, Hans Petter Selasky wrote: >> On 11/26/20 3:38 PM, Thomas Steen Rasmussen wrote: >>> I tried swapping the webcams around, the error is always with the >>> second webcam connected (so video2), regardless of which webcam it is. >> >> Hi, >> >> Might be a bug in the XHCI controller driver or XHCI HW, that the >> isochronous transactions don't get scheduling time. >> >> Do you have the possibility to test on another computer running FreeBSD? > > I do actually, let me get that setup. > Hello, That was easy, webcamd and pwcview was already installed :) I can confirm the same behaviour happens on an Intel NUC which has this XHCI root hub: uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 /dev/video0 is able to take a snapshot with pwcview, /dev/video2 hangs. /Thomas
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