Re: webcamd, usb and two webcams - only one works
On 11/26/20 8:13 PM, Thomas Steen Rasmussen wrote: Anyway, since the APU only has the two external USB plugs I've been using, and that is the machine I need this to work on, this doesn't help a lot unfortunately. But it is a data point at least. /Thomas Hello again, OK, so I will have to wrap this up for today. I've moved the cameras back to the APU. I can get both working, but not at the same time. I will have to live with that for now. One is intended for motion detection with the "motion" software, the other is just for taking a snapshot of a control panel with some LEDs occationally. When I need to do that I can power_off the one used in motion and power_on the other one, take the snapshot, and power_off and on again, and the other camera works again. Thank you for all the help. Again :) /Thomas ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 5:05 PM, Thomas Steen Rasmussen wrote: I see. What does this mean? Since the same problem is also on different computer, intel instead of AMD. Same problem also occurred when I replaced one of the webcams with a different model. It isn't clear to me whether this is a problem/bug in one or more of the webcams or drivers, or in freebsd or somewhere else? Thank you for your time and patience with this :) Hi, The xHCI controller has some logic to reserve bandwidth in bytes per frame (125us for High speed or 1ms for Full speed) for various endpoints. If these numbers are wrong the xHCI controller may think there is no bandwidth and will not activate the endpoint and schedule the transactions. Maybe my Skylake xHCI doesn't care about these values :-( Reference: https://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/extensible-host-controler-interface-usb-xhci.pdf --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 4:43 PM, Hans Petter Selasky wrote: Hi, xhci_interrupt_poll: event[21] = 33 (0x0001002f8e50 0x0500 0x02008400) xhci_check_command: Received command event xhci_configure_reset_endpoint: Could not stop endpoint 9 xhci_interrupt_poll: event[22] = 33 (0x0001002f8e60 0x0500 0x02008400) xhci_check_command: Received command event xhci_configure_reset_endpoint: Could not set dequeue ptr for endpoint 9 I think 0x0500 means TRB_ERROR (5): From the xHCI specification: Asserted when a TRB parameter error condition (e.g., out of range or invalid parameter) is detected in a TRB. Refer to section 4.10.2.2 for examples. I see. What does this mean? Since the same problem is also on different computer, intel instead of AMD. Same problem also occurred when I replaced one of the webcams with a different model. It isn't clear to me whether this is a problem/bug in one or more of the webcams or drivers, or in freebsd or somewhere else? Thank you for your time and patience with this :) /Thomas ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 4:36 PM, Thomas Steen Rasmussen wrote:
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.
Hi,
I have a Skylake here with XHCI and it doesn't exhibit this problem when
using two differently branded HighSpeed UVC webcams simultaneously.
I'm not sure what is causing this. Because your one webcam works alone
it might have something to do with the xHCI bandwidth allocations, which
are controlled by the ESIT and average TRB len as shown below. You may
want to play with these fields in xhci.c:
switch (edesc->bmAttributes & UE_XFERTYPE) {
case UE_INTERRUPT:
case UE_ISOCHRONOUS:
temp = XHCI_EPCTX_4_MAX_ESIT_PAYLOAD_SET(max_frame_size) |
XHCI_EPCTX_4_AVG_TRB_LEN_SET(MIN(XHCI_PAGE_SIZE,
max_frame_size));
break;
--HPS
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Re: webcamd, usb and two webcams - only one works
Hi, xhci_interrupt_poll: event[21] = 33 (0x0001002f8e50 0x0500 0x02008400) xhci_check_command: Received command event xhci_configure_reset_endpoint: Could not stop endpoint 9 xhci_interrupt_poll: event[22] = 33 (0x0001002f8e60 0x0500 0x02008400) xhci_check_command: Received command event xhci_configure_reset_endpoint: Could not set dequeue ptr for endpoint 9 I think 0x0500 means TRB_ERROR (5): From the xHCI specification: Asserted when a TRB parameter error condition (e.g., out of range or invalid parameter) is detected in a TRB. Refer to section 4.10.2.2 for examples. --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
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 ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
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. There is a debug knob for the XHCI controller, sysctl hw.usb.xhci.debug Try flipping it to 17 for a second while in the "timeout" state, and then flip it back to 0. Prints end up in dmesg and /var/log/messages . It might sched some more details into the exact XHCI error code. I included some of the dmesg output from the xhci debug here: == xhci_setup_generic_chain_sub: NTRB=1 xhci_setup_generic_chain_sub: LINK=0x11aff1d80 xhci_dump_trb: trb = 0xfe00339f2010 xhci_dump_trb: qwTrb0 = 0x00011aff1d80 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1d80 xhci_dump_trb: qwTrb0 = 0x00011ae5ac00 xhci_dump_trb: dwTrb2 = 0x00040400 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_dump_trb: trb = 0xfe00339f1d90 xhci_dump_trb: qwTrb0 = 0x00011ae5b000 xhci_dump_trb: dwTrb2 = 0x00020800 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=2 xhci_setup_generic_chain_sub: LINK=0x11aff1c00 xhci_dump_trb: trb = 0xfe00339f1da0 xhci_dump_trb: qwTrb0 = 0x00011aff1c00 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1c00 xhci_dump_trb: qwTrb0 = 0x00011ae5b800 xhci_dump_trb: dwTrb2 = 0x00020800 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_dump_trb: trb = 0xfe00339f1c10 xhci_dump_trb: qwTrb0 = 0x00011ae5c000 xhci_dump_trb: dwTrb2 = 0x00020400 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=2 xhci_setup_generic_chain_sub: LINK=0x11aff1a80 xhci_dump_trb: trb = 0xfe00339f1c20 xhci_dump_trb: qwTrb0 = 0x00011aff1a80 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1a80 xhci_dump_trb: qwTrb0 = 0x00011ae5c400 xhci_dump_trb: dwTrb2 = 0x00020c00 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=1 xhci_setup_generic_chain_sub: LINK=0x11aff1900 xhci_dump_trb: trb = 0xfe00339f1a90 xhci_dump_trb: qwTrb0 = 0x00011aff1900 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1900 xhci_dump_trb: qwTrb0 = 0x00011ae5d000 xhci_dump_trb: dwTrb2 = 0x00020c00 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=1 xhci_setup_generic_chain_sub: LINK=0x11aff1780 xhci_dump_trb: trb = 0xfe00339f1910 xhci_dump_trb: qwTrb0 = 0x00011aff1780 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1780 xhci_dump_trb: qwTrb0 = 0x00011ae5dc00 xhci_dump_trb: dwTrb2 = 0x00040400 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_dump_trb: trb = 0xfe00339f1790 xhci_dump_trb: qwTrb0 = 0x00011ae5e000 xhci_dump_trb: dwTrb2 = 0x00020800 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=2 xhci_setup_generic_chain_sub: LINK=0x11aff1600 xhci_dump_trb: trb = 0xfe00339f17a0 xhci_dump_trb: qwTrb0 = 0x00011aff1600 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1600 xhci_dump_trb: qwTrb0 = 0x00011ae5e800 xhci_dump_trb: dwTrb2 = 0x00020800 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_dump_trb: trb = 0xfe00339f1610 xhci_dump_trb: qwTrb0 = 0x00011ae5f000 xhci_dump_trb: dwTrb2 = 0x00020400 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=2 xhci_setup_generic_chain_sub: LINK=0x11aff1480 xhci_dump_trb: trb = 0xfe00339f1620 xhci_dump_trb: qwTrb0 = 0x00011aff1480 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_dump_trb: trb = 0xfe00339f1480 xhci_dump_trb: qwTrb0 = 0x00011ae5f400 xhci_dump_trb: dwTrb2 = 0x00020c00 xhci_dump_trb: dwTrb3 = 0x80021415 xhci_setup_generic_chain_sub: NTRB=1 xhci_setup_generic_chain_sub: LINK=0x11aff1300 xhci_dump_trb: trb = 0xfe00339f1490 xhci_dump_trb: qwTrb0 = 0x00011aff1300 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1831 xhci_setup_generic_chain: first=0xf800102c6400 last=0xfe00339f1480 xhci_transfer_insert: xhci_dump_trb: trb = 0xfe00339f1490 xhci_dump_trb: qwTrb0 = 0x96c80820 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x1821 xhci_dump_trb: trb = 0xf80096c80810 xhci_dump_trb: qwTrb0 = 0x102c6400 xhci_dump_trb: dwTrb2 = 0x xhci_dump_trb: dwTrb3 = 0x xhci_transfer_insert: qh_pos = 1 xhci_interrupt: real interrupt (status=0x0008) xhci_interrupt_poll: event[20] = 37 (0x 0x0c00 0x9400)
Re: webcamd, usb and two webcams - only one works
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? There is a debug knob for the XHCI controller, sysctl hw.usb.xhci.debug Try flipping it to 17 for a second while in the "timeout" state, and then flip it back to 0. Prints end up in dmesg and /var/log/messages . It might sched some more details into the exact XHCI error code. --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 3:20 PM, Hans Petter Selasky wrote: Try running webcamd in the foreground, and see if there are any errors output there aswell. Like request for firmware. I now have webcamd running for both webcams in the foreground, no errors, almost the same output except the video device numbers: == $ sudo /usr/local/sbin/webcamd -i 0 -d ugen0.2 -U webcamd -G webcamd webcamd 61415 - - Attached to ugen0.2[0] webcamd 61415 - - Creating /dev/video0 webcamd 61415 - - Creating /dev/video1 $ sudo /usr/local/sbin/webcamd -i 0 -d ugen0.3 -U webcamd -G webcamd webcamd 73317 - - Attached to ugen0.3[0] webcamd 73317 - - Creating /dev/video2 webcamd 73317 - - Creating /dev/video3 == No further output when taking a snapshot with the working /dev/video0 or when trying to take a snapshot with the not working /dev/video2. I tried swapping the webcams around, the error is always with the second webcam connected (so video2), regardless of which webcam it is. /Thomas ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
Also try to switch the enumeration order. Is it always the same webcam that doesn't work? Or only /dev/video2 ? --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 3:13 PM, Thomas Steen Rasmussen wrote: 14:05:25.408143 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:25.654017 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.654030 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.654220 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 Hi, This just means the device is not returning data like it should and the USB stack detects that and tries to restart. Try running webcamd in the foreground, and see if there are any errors output there aswell. Like request for firmware. Peek at "ps auxw | grep webcamd" for arguments (remove -B argument). --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 2:49 PM, Hans Petter Selasky wrote: On 11/26/20 2:34 PM, Thomas Steen Rasmussen wrote: On 11/26/20 1:18 PM, Hans Petter Selasky wrote: Hi Thomas, Try setting the resolution or framerate down, because high resolution webcams need a lot of USB bandwidth! Hi, Hi :) Try "vga" instead of "xga". I tried vga but it did not make a difference, it still says 640*480 and only one camera works. I removed the external USB hub (which is externally powered) from the picture and plugged both cameras directly into the APU for now, to eliminate some potential sources of issues. The issue still remains. Using usbdump I was able to see the USB back-and-forth when taking a snapshot with pwcview with the working camera. About maybe 100 lines or so, no errors. Then I tried the other camera where pwcview never returns, and it looks similar at first but then gets stuck in a loop of: = 14:05:25.408143 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:25.654017 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.654030 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.654220 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:25.93 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.900012 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:25.900141 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:26.146015 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.146035 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.146244 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:26.392001 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.392017 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.392229 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 ^C14:05:26.637926 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.637939 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.638104 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:26.883934 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.883959 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:26.884114 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:27.129974 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.129984 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.130124 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:27.375997 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.376006 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.376182 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 14:05:27.621937 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.621950 usbus0.3 DONE-ISOC-EP=0084,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT 14:05:27.622184 usbus0.3 SUBM-ISOC-EP=0084,SPD=HIGH,NFR=128,SLEN=0,IVAL=0 210 packets captured 210 packets received by filter 0 packets dropped by kernel $ = Note that usbdump is completely quiet when I don't run pwcview on either camera. If the problem was that the first webcam sends too much data for the second webcam to work, wouldn't usbdump show that? This makes me think the problem is elsewhere! You could try to run webcamd in the foreground. It is also possible to enable debugging when you build webcamd from ports. Also, usbdump, can dump the traffic of these devices so that you see exactly what is going on. This is devinfo output with the two webcams plugged directly into the USB plugs on the APU3: xhci0 usbus0 uhub1 uaudio0 pcm0 uaudio1 pcm1 Where "uhub1" is uhub1: <0x1022 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 Can you show what usbconfig tell about these two devices when they are connected? I sent the output of dump_all_desc for one of them in the initial email. I can send both or other output if needed? This is the brief output for both: === $ sudo usbconfig -d ugen0.3 dump_device_desc ugen0.3: at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA) bLength = 0x0012 bDescriptorType = 0x0001 bcdUSB = 0x0200 bDeviceClass = 0x00ef bDeviceSubClass = 0x0002 bDeviceProtocol = 0x0001 bMaxPacketSize0 = 0x0040 idVendor = 0x1224 idProduct = 0x2a25 bcdDevice = 0x0100 iManufacturer = 0x0001 iProduct = 0x0002 iSerialNumber =
Re: webcamd, usb and two webcams - only one works
On 11/26/20 2:34 PM, Thomas Steen Rasmussen wrote: On 11/26/20 1:18 PM, Hans Petter Selasky wrote: Hi Thomas, Try setting the resolution or framerate down, because high resolution webcams need a lot of USB bandwidth! Hi, Hi, Thanks for the reply. How can I set the resolution or framerate lower? I first connect both webcams, and then try for example with the pwcview command: $ sudo pwcview -h -c 1 -o foo.jpg -d /dev/video0 -s xga Webcam set to: 640x480 (xga) at 5 fps $ $ sudo pwcview -h -c 1 -o foo.jpg -d /dev/video2 -s xga Webcam set to: 640x480 (xga) at 5 fps ^C $ Try "vga" instead of "xga". And only the first (video0+1) works, the second (video2+3) never returns. Can I maybe tell webcamd to set fps and resolution somehow or how would I do it? This is done by the clients of V4L. You could try to run webcamd in the foreground. It is also possible to enable debugging when you build webcamd from ports. Also, usbdump, can dump the traffic of these devices so that you see exactly what is going on. Can you show what usbconfig tell about these two devices when they are connected? In the "sysctl -a" output you'll find some "%parent" nodes which tell how they are connected. Also "devinfo" will tell that. The webcams are connected to a externally powered USB3 hub which is connected to a USB3 XHCI controller. I would think the 5 gbit/s offered by USB3 would be enough for this. USB3 is an own bus, and the 5 GBit/s won't be used unless your device is 3.0 compatible. Actually your USB HUB has USB2 and USB3 in parallell. The onboard usb3 controller: usbus0 on xhci0 usbus0: 5.0Gbps Super Speed USB v3.0 ugen0.1: <0x1022 XHCI root HUB> at usbus0 uhub1: <0x1022 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 When I plugin the external USB hub it shows both a usb 2 and a usb3 hub for some reason? ugen0.2: at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen0.3: at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA) This is normal and expected! Is the USB HUB self powered? uhub5 on uhub1 uhub5: on usbus0 uhub5: 4 ports with 4 removable, self powered uhub6 on uhub1 uhub6: on usbus0 uhub6: 4 ports with 4 removable, self powered So when I plug in the webcams how do I know which "uhub" device they are plugged into? These are the messages after plugging in the webcams: = ugen0.4: at usbus0 uaudio0 on uhub5 uaudio0: on usbus0 uaudio0: No playback. uaudio0: Record[0]: 48000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 44100 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 16000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 8000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: No MIDI sequencer. pcm0: on uaudio0 uaudio0: No HID volume keys found. ugen0.5: at usbus0 uaudio1 on uhub5 uaudio1: on usbus0 uaudio1: No playback. uaudio1: Record[0]: 48000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 44100 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 16000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 8000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: No MIDI sequencer. pcm1: on uaudio1 uaudio1: No HID volume keys found. = "uhub5" is the usb2 external hub. Could this be the reason for my timeouts? Maybe. You can check: usbdump -i usbus0 -s 65536 And see if there are any USB errors besides from cancelled. Are you running -stable ? --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 1:18 PM, Hans Petter Selasky wrote: Hi Thomas, Try setting the resolution or framerate down, because high resolution webcams need a lot of USB bandwidth! Hi, Thanks for the reply. How can I set the resolution or framerate lower? I first connect both webcams, and then try for example with the pwcview command: $ sudo pwcview -h -c 1 -o foo.jpg -d /dev/video0 -s xga Webcam set to: 640x480 (xga) at 5 fps $ $ sudo pwcview -h -c 1 -o foo.jpg -d /dev/video2 -s xga Webcam set to: 640x480 (xga) at 5 fps ^C $ And only the first (video0+1) works, the second (video2+3) never returns. Can I maybe tell webcamd to set fps and resolution somehow or how would I do it? The webcams are connected to a externally powered USB3 hub which is connected to a USB3 XHCI controller. I would think the 5 gbit/s offered by USB3 would be enough for this. The onboard usb3 controller: usbus0 on xhci0 usbus0: 5.0Gbps Super Speed USB v3.0 ugen0.1: <0x1022 XHCI root HUB> at usbus0 uhub1: <0x1022 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 When I plugin the external USB hub it shows both a usb 2 and a usb3 hub for some reason? ugen0.2: at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=SAVE (0mA) ugen0.3: at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA) uhub5 on uhub1 uhub5: on usbus0 uhub5: 4 ports with 4 removable, self powered uhub6 on uhub1 uhub6: on usbus0 uhub6: 4 ports with 4 removable, self powered So when I plug in the webcams how do I know which "uhub" device they are plugged into? These are the messages after plugging in the webcams: = ugen0.4: at usbus0 uaudio0 on uhub5 uaudio0: on usbus0 uaudio0: No playback. uaudio0: Record[0]: 48000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 44100 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 16000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 8000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio0: No MIDI sequencer. pcm0: on uaudio0 uaudio0: No HID volume keys found. ugen0.5: at usbus0 uaudio1 on uhub5 uaudio1: on usbus0 uaudio1: No playback. uaudio1: Record[0]: 48000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 44100 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 16000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: Record[0]: 8000 Hz, 1 ch, 16-bit S-LE PCM format, 2x8ms buffer. uaudio1: No MIDI sequencer. pcm1: on uaudio1 uaudio1: No HID volume keys found. = "uhub5" is the usb2 external hub. Could this be the reason for my timeouts? Thanks! /Thomas ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
Re: webcamd, usb and two webcams - only one works
On 11/26/20 1:04 PM, Thomas Steen Rasmussen via freebsd-usb wrote: Hello USB friends :) I am having a hard time trying to get two webcams working simultaneously on FreeBSD 12.2-STABLE r367109 GENERIC amd64. Each webcam works by itself, for example when taking a snapshot with pwcview: sudo pwcview -h -c 1 -o foo.jpg -d /dev/video0 The webcam creates two video devices, video0 and video1. When I plug in the second webcam video2 and video3 are created. But trying to use the device doesn't work, pwcview hangs forever and multimedia/motion complains about timeouts when speaking to the camera. If I swap the cameras around then "the other one" works, so I know both cameras are fine. It seems somehow webcamd or maybe something in the usb system doesn't like having two cameras in my setup. Hi Thomas, Try setting the resolution or framerate down, because high resolution webcams need a lot of USB bandwidth! We currently don't have so many checks for excess bandwidth usage in the USB stack in FreeBSD, but I believe this is the root cause. Or make sure the webcams are connected to different USB host controllers. I recently bought a couple of USB 3.0 capable webcams to resolve the issue I had on my setup. USB 2.0 is only 480 MBit/s and many webcams simply send raw data :-) Both are connected to a USB hub, but I have tried connecting one directly to the computer, which is a pcengines APU3C4 btw. It did not make a difference. What can I try to troubleshoot/debug this? Any more info needed? --HPS ___ freebsd-usb@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
