Date: Wed, 17 Mar 2021 23:57:14 +0000 From: "Dave Cottlehuber" <dch@skunkwerks.at> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Webcam - Logitech C922 - question Message-ID: <9f90f7f8-565a-47f1-ab5d-d4d78fd791d4@www.fastmail.com> In-Reply-To: <08db2f9a-4c85-0c82-455c-a1c64512ccc7@att.net> References: <08db2f9a-4c85-0c82-455c-a1c64512ccc7.ref@att.net> <08db2f9a-4c85-0c82-455c-a1c64512ccc7@att.net>
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On Wed, 17 Mar 2021, at 19:45, Bob Melson wrote: > Has anybody out there successfully installed a Logitech C922 webcam? > > I've managed to install to the point where the device is recognized by > pwview, and have, I think, gotten the mic (/dev/dsp3) and speaker > (/dev/dsp2) correctly installed/activated/recognized. Problem is that I > see no video with jitsi or zoom or with the VA's telemed system - all 3 > just work on my clever phone, but not from my freebsd desktop. At this > point, I'm also not sure of mic and speaker, but they could be failing > because of the video failure. > > If anybody out there has successfully installed either a C920 or C922 > and has video, mic and sound working, I'd appreciate it if you could > post a how-to of just how you managed the trick. I don't do frustration > well and need a wise head's guidance. > > Thanks in advance, > Bob Melson hi Bob dmesg will help (see mine below). I've got a c920 here. if you want to go through this together (maybe over irc or something) reply back privately to organise. I don't see yours here https://wiki.freebsd.org/WebcamCompat what does dmesg report? I have the the following, on 13.0 & 14.0-CURRENT but I'm pretty sure this will be fine on 12.2 as well without changes. # packages multimedia/webcamd multimedia/pwcview multimedia/v4l-utils multimedia/v4l_compat (mine works without this, but its in my notes) ** no pulseaudio, sndio daemons running** # rc.conf kld_list="${kld_list} cuse" webcamd_enable=YES webcamd_user=dch webcamd_group=webcamd webcamd_0_flags="-N vendor-0x046d-HD-Pro-Webcam-C920 -S 7A9C9A7F" I probably added myself to groups video operator & webcamd as well. also, consider using firefox, the audio & mic detection works better; chrome doesn't handle this as neatly when you have multiple audio devices. in about:config for firefox, I have: media.cubeb.backend=oss dmesg will help. # dmesg | grep -i webcam [150339] ugen0.7: <vendor 0x046d HD Pro Webcam C920> at usbus0 [150339] uaudio1: <vendor 0x046d HD Pro Webcam C920, class 239/2, rev 2.00/0.11, addr 10> on usbus0 # sysctl hw.snd.verbose=2 # cat /dev/sndstat FreeBSD Audio Driver (64bit 2009061500/amd64) Installed devices: ####### USB speakers ###### pcm0: <USB audio> at ? kld snd_uaudio (1p:4v/0r:0v) default snddev flags=0x2e3<SIMPLEX,AUTOVCHAN,BUSY,MPSAFE,REGISTERED,VPC> [pcm0:play:dsp0.p0]: spd 48000, fmt 0x00200010/0x00201000, flags 0x00002100, 0x00000006 interrupts 417074, underruns 0, feed 417073, ready 0 [b:6144/3072/2|bs:4096/2048/2] channel flags=0x2100<BUSY,HAS_VCHAN> {userland} -> feeder_mixer(0x00200010) -> feeder_format(0x00200010 -> 0x00201000) -> {hardware} pcm0:play:dsp0.p0[pcm0:virtual:dsp0.vp0]: spd 48000, fmt 0x00201000/0x00200010, flags 0x10000000, 0x00000023 interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:16384/2048/8] channel flags=0x10000000<VIRTUAL> {userland} -> feeder_root(0x00201000) -> feeder_format(0x00201000 -> 0x00200010) -> feeder_volume(0x00200010) -> {hardware} pcm0:play:dsp0.p0[pcm0:virtual:dsp0.vp1]: spd 8000/48000, fmt 0x00100008/0x00200010, flags 0x10000000, 0x0000006b interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:512/64/8] channel flags=0x10000000<VIRTUAL> {userland} -> feeder_root(0x00100008) -> feeder_format(0x00100008 -> 0x00100010) -> feeder_rate(0x00100010 q:1 8000 -> 48000) -> feeder_matrix(1.0 -> 2.0) -> feeder_volume(0x00200010) -> {hardware} pcm0:play:dsp0.p0[pcm0:virtual:dsp0.vp2]: spd 48000, fmt 0x00201000/0x00200010, flags 0x10000000, 0x00000023 interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:16384/2048/8] channel flags=0x10000000<VIRTUAL> {userland} -> feeder_root(0x00201000) -> feeder_format(0x00201000 -> 0x00200010) -> feeder_volume(0x00200010) -> {hardware} pcm0:play:dsp0.p0[pcm0:virtual:dsp0.vp3]: spd 48000, fmt 0x00100010/0x00200010, flags 0x10000000, 0x00000061 interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:4096/512/8] channel flags=0x10000000<VIRTUAL> {userland} -> feeder_root(0x00100010) -> feeder_matrix(1.0 -> 2.0) -> feeder_volume(0x00200010) -> {hardware} ####### webcam record ####### pcm1: <USB audio> at ? kld snd_uaudio (0p:0v/1r:2v) snddev flags=0x2e3<SIMPLEX,AUTOVCHAN,BUSY,MPSAFE,REGISTERED,VPC> [pcm1:record:dsp1.r0]: spd 32000, fmt 0x00200010, flags 0x00002100, 0x00000005 interrupts 417065, overruns 0, feed 834130, hfree 2048, sfree 2048 [b:2048/1024/2|bs:2048/1024/2] channel flags=0x2100<BUSY,HAS_VCHAN> {hardware} -> feeder_root(0x00200010) -> feeder_mixer(0x00200010) -> {userland} pcm1:record:dsp1.r0[pcm1:virtual:dsp1.vr0]: spd 48000/32000, fmt 0x00201000/0x00200010, flags 0x10000000, 0x0000002b interrupts 0, overruns 0, feed 0, hfree 0, sfree 65536 [b:0/0/0|bs:65536/512/128] channel flags=0x10000000<VIRTUAL> {hardware} -> feeder_root(0x00200010) -> feeder_format(0x00200010 -> 0x00201000) -> feeder_volume(0x00201000) -> feeder_rate(0x00201000 q:1 32000 -> 48000) -> {userland} pcm1:record:dsp1.r0[pcm1:virtual:dsp1.vr1]: spd 8000/32000, fmt 0x00100008/0x00200010, flags 0x10000000, 0x0000006b interrupts 0, overruns 0, feed 0, hfree 0, sfree 2048 [b:0/0/0|bs:2048/16/128] channel flags=0x10000000<VIRTUAL> {hardware} -> feeder_root(0x00200010) -> feeder_matrix(2.0 -> 1.0) -> feeder_volume(0x00100010) -> feeder_rate(0x00100010 q:1 32000 -> 8000) -> feeder_format(0x00100010 -> 0x00100008) -> {userland} https://lists.freebsd.org/pipermail/freebsd-multimedia/2020-March/020164.html has some excellent resources & tips as well. for testing, https://mozilla.github.io/webrtc-landing/gum_test.html https://janus.conf.meetecho.com/echotest.html https://test.webrtc.org/ A+ Dave
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