Webcam not working | Gentoo Linux Community | Page 1

left wing Jul 7, 2024, 9:38 PM

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Can't open webcam. It's windows Hello so maybe that's the issue? v4l2-ctl shows "cannot open device" also I'm missing options that I'm supposed to configure in the kernel. Help x.x

civic hedge Jul 7, 2024, 9:43 PM

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left wing Can't open webcam. It's windows Hello so maybe that's the issue? v4l2-ctl shows ...

what device is it?

left wing Jul 7, 2024, 10:03 PM

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Lenovo Webcam

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one sec

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let meee send you the name

left wing Jul 7, 2024, 10:04 PM

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civic hedge what device is it?

Bus 001 Device 002: ID 17ef:4839 Lenovo Lenovo Performance Camera

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and then the actual device

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grrrr

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https://www.lenovo.com/us/en/p/accessories-and-software/webcams-and-video/webcams-and-video_webcams/4xc1d66055

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says it's UVC compliant

civic hedge Jul 7, 2024, 10:07 PM

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can you send output from dmesg?

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using wgetpaste

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wgetpaste -c 'sudo dmesg'

left wing Jul 7, 2024, 10:09 PM

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civic hedge can you send output from dmesg?

sure

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one sec

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need to install wgetpaste

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lol

civic hedge Jul 7, 2024, 10:10 PM

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emerge -av wgetpaste

left wing Jul 7, 2024, 10:10 PM

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yeah

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got it

civic hedge Jul 7, 2024, 10:10 PM

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nice :3

left wing Jul 7, 2024, 10:10 PM

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https://bpa.st/J7PA

civic hedge Jul 7, 2024, 10:12 PM

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nothing really stands out from dmesg

left wing Jul 7, 2024, 10:12 PM

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yeah I thought so too

civic hedge Jul 7, 2024, 10:12 PM

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(also i see a waybar user, nice)

left wing Jul 7, 2024, 10:12 PM

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:P

civic hedge Jul 7, 2024, 10:12 PM

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you should post your ricing in #1049175025791537242

left wing Jul 7, 2024, 10:12 PM

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I'm still in the process to customize my dotfiles

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switched a few weeks ago. Still getting used to everything

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switched from macos with yabai

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so I'm used to tiling wms but like been using linux for around 4ish years now?

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and just decided fuck it i'll switch and buy a thinkpad :P

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got a cheap deal on a Thinkpad E14 Gen 3 with a Ryzen 7 5700 and 16 Gigs of ram

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for like 190?

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anyway

civic hedge Jul 7, 2024, 10:14 PM

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yeah but sadly i dont see why it wouldnt be working

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i dont mess with webcams often

left wing Jul 7, 2024, 10:15 PM

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no problem

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maybe I'm too young is too easy as a category?

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x.x

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hard for me to gage how hard a problem is lol

knotty notch Jul 7, 2024, 10:32 PM

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Don't worry about it. What kernel are you using?

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Distribution kernel or a custom config?

left wing Jul 7, 2024, 10:36 PM

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I'm using distribution kernel p much

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accidentally nuked my custom config so I used the config from dist

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I forgot to version

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cat_dead

knotty notch Jul 7, 2024, 10:39 PM

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Ok. You should have the video class driver then, most webcams use that

left wing Jul 7, 2024, 10:40 PM

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supposidly it uses UVC

knotty notch Jul 7, 2024, 10:40 PM

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Ok. Does lsusb show much

left wing Jul 7, 2024, 10:41 PM

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left wing ```Bus 001 Device 002: ID 17ef:4839 Lenovo Lenovo Performance Camera```

this is what lsusb shows

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ast least in relation to this device

knotty notch Jul 7, 2024, 10:41 PM

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Ah good. So it is detected.

left wing Jul 7, 2024, 10:41 PM

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uses MJPEG YUY2 encoding

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could that be an issue?

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I legit have 0 exp working with webcams x.x

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knotty notch Jul 7, 2024, 10:43 PM

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Can you wgetpaste `ls /sev

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Oh good

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So we have a device.

left wing Jul 7, 2024, 10:43 PM

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yes

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but for some reason it can't open it

left wing Jul 7, 2024, 10:44 PM

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knotty notch Can you wgetpaste `ls /sev

do u want /dev?

knotty notch Jul 7, 2024, 10:44 PM

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Nah that answered my question

left wing Jul 7, 2024, 10:44 PM

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oki

knotty notch Jul 7, 2024, 10:44 PM

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Oh and it's external great

left wing Jul 7, 2024, 10:44 PM

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yep

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usb c?

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hmm

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maybe try a different port

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idk if that could be it lol

knotty notch Jul 7, 2024, 10:44 PM

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Let me see what I can dig out. 🙂

left wing Jul 7, 2024, 10:44 PM

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sure!

knotty notch Jul 7, 2024, 10:44 PM

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Well if you do replug it keep an eye on your dmesg maybe there's something useful.

left wing Jul 7, 2024, 10:45 PM

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oki

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let me do that rq

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this should contain most content

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still can't open

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[Jul 7 15:45] usb 1-2: USB disconnect, device number 2
[Jul 7 15:46] usb 1-2: new high-speed USB device number 5 using xhci_hcd
[  +0.290102] usb 1-2: New USB device found, idVendor=17ef, idProduct=4839, bcdDevice= 4.09
[  +0.000003] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  +0.000002] usb 1-2: Product: Lenovo Performance Camera
[  +0.000001] usb 1-2: Manufacturer: Lenovo
[  +0.000001] usb 1-2: SerialNumber: 145081A8
[  +0.181986] usb 1-2: Warning! Unlikely big volume range (=2560), cval->res is probably wrong.
[  +0.000002] usb 1-2: [5] FU [Microphone Capture Volume] ch = 1, val = -2560/2560/2```

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there that's more sanitized

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@knotty notch there is... no video0 in /dev

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from what I can see

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HUH

knotty notch Jul 7, 2024, 10:49 PM

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?

left wing Jul 7, 2024, 10:50 PM

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second

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https://bpa.st/JJGA

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there u go

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yeah definetly no video0

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I'm assuming I"m missing the UVC driver than in the kernel?

civic hedge Jul 7, 2024, 10:53 PM

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do you have media-libs/libuvc?

left wing Jul 7, 2024, 10:53 PM

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second

civic hedge Jul 7, 2024, 10:53 PM

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also look at https://wiki.gentoo.org/wiki/Webcam

Webcam

left wing Jul 7, 2024, 10:53 PM

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left wing I'm assuming I"m missing the UVC driver than in the kernel?

masked.

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grumble

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the fuck did I do

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second let me run through the tutorial again

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just as a sanity check

civic hedge Jul 7, 2024, 10:54 PM

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whats masked?

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libuvc?

left wing Jul 7, 2024, 10:54 PM

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aye

civic hedge Jul 7, 2024, 10:54 PM

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the hell

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so many people with masked packages today

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can you send the output of emerge -pv libuvc

left wing Jul 7, 2024, 10:55 PM

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V4L2_FLASH_LED_CLASS is missing...

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USB_VIDEO_CLASS is on modular

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could that be it?

civic hedge Jul 7, 2024, 10:57 PM

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USB_VIDEO_CLASS is modular according to the wiki

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or do you mean the missing config option?

knotty notch Jul 7, 2024, 10:58 PM

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If it's a module that means it should load automatically

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It might need a udev tule

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Rule

left wing Jul 7, 2024, 10:59 PM

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civic hedge or do you mean the missing config option?

missing one

left wing Jul 7, 2024, 10:59 PM

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civic hedge USB_VIDEO_CLASS is modular according to the wiki

oh shit

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I just set it to built-in

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grr

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lol

civic hedge Jul 7, 2024, 10:59 PM

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i dont really think it matters

left wing Jul 7, 2024, 11:00 PM

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I just reset it to make sure

left wing Jul 7, 2024, 11:00 PM

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civic hedge can you send the output of `emerge -pv libuvc`

sure one sec

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https://bpa.st/ATNQ

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here u go

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updated my confs just to make sure didn't make a diff

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I guess i gotta unmask it

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looking at the vers

civic hedge Jul 7, 2024, 11:04 PM

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touch /etc/portage/package.accept_keywords/lubuvc && echo "=media-libs/libuvc-0.0.7 ~amd64" >> /etc/portage/package.accept_keywords/lubuvc

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to unmask

left wing Jul 7, 2024, 11:05 PM

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aye one sec

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cool

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fetching

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done

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gonna also rebuild v4l

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also gonna rebuild the kernel with that extra option set to be sure

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gimme 30 mins

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should be enough.

left wing Jul 8, 2024, 1:17 AM

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sadly

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did not help

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:/

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sorry took a bit longer since I had to let doggie out

knotty notch Jul 8, 2024, 2:48 AM

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hm. I just configured my desktop for webcam

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literally

emerge --ask media-tv/v4l-utils
emerge -av media-video/kamoso

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was enough to get it working

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let's see

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( I found a spare USB endoscope thats UVC)

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so I do have a /dev/video0

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so let's focus on that

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can you unplug and replug your camera then send your dmesg please?

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Mon Jul  8 12:08:17 2024] usb 1-4: new high-speed USB device number 25 using xhci_hcd
[Mon Jul  8 12:08:17 2024] usb 1-4: New USB device found, idVendor=0bda, idProduct=5829, bcdDevice=58.01
[Mon Jul  8 12:08:17 2024] usb 1-4: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[Mon Jul  8 12:08:17 2024] usb 1-4: Product: USB Camera
[Mon Jul  8 12:08:17 2024] usb 1-4: Manufacturer: Generic
[Mon Jul  8 12:08:17 2024] usb 1-4: SerialNumber: 200901010001
[Mon Jul  8 12:08:17 2024] videodev: Linux video capture interface: v2.00
[Mon Jul  8 12:08:17 2024] usb 1-4: Found UVC 1.00 device USB Camera (0bda:5829)
[Mon Jul  8 12:08:17 2024] usbcore: registered new interface driver uvcvideo
[Mon Jul  8 12:08:19 2024] usb 1-4: USB disconnect, device number 25
[Mon Jul  8 12:08:20 2024] usb 1-4: new high-speed USB device number 26 using xhci_hcd
[Mon Jul  8 12:08:20 2024] usb 1-4: New USB device found, idVendor=0bda, idProduct=5829, bcdDevice=58.01
[Mon Jul  8 12:08:20 2024] usb 1-4: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[Mon Jul  8 12:08:20 2024] usb 1-4: Product: USB Camera
[Mon Jul  8 12:08:20 2024] usb 1-4: Manufacturer: Generic
[Mon Jul  8 12:08:20 2024] usb 1-4: SerialNumber: 200901010001
[Mon Jul  8 12:08:20 2024] usb 1-4: Found UVC 1.00 device USB Camera (0bda:5829)

left wing Jul 10, 2024, 2:50 PM

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knotty notch hm. I just configured my desktop for webcam

sorry for the delayed response

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was @ the beach this week and had no computer

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gonna try it out now

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[ 4495.338026] usb 1-2: USB disconnect, device number 2
[ 4500.492590] usb 1-2: new high-speed USB device number 5 using xhci_hcd
[ 4500.776416] usb 1-2: New USB device found, idVendor=17ef, idProduct=4839, bcdDevice= 4.09
[ 4500.776422] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4500.776424] usb 1-2: Product: Lenovo Performance Camera
[ 4500.776425] usb 1-2: Manufacturer: Lenovo
[ 4500.776427] usb 1-2: SerialNumber: 145081A8
[ 4500.938379] usb 1-2: Warning! Unlikely big volume range (=5120), cval->res is probably wrong.
[ 4500.938384] usb 1-2: [5] FU [Microphone Capture Volume] ch = 1, val = -2560/2560/1```

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does not mention UVC video class

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uhh

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yet supposidly UVC compliant

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lol

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I feel like the windows hello bs is doing something that I DONT want here

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currently thinking if I have another cam somewhere...

left wing Jul 10, 2024, 4:31 PM

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Ima try a different webcam

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Lets see if I can find it takes a while maybe

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tried a different usb cable, that didn't do the trick

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when unplugged I seem to lack a hidraw device

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so I do get the raw device

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which is good

left wing Jul 10, 2024, 4:59 PM

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can't find another UVC compliant device

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shucks

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:/

knotty notch Jul 10, 2024, 8:36 PM

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That's good. At least it is consistent.

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You're using a custom kernel config?

left wing Jul 10, 2024, 10:00 PM

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Aye

knotty notch Jul 11, 2024, 9:02 AM

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Can you drop the dist kernel in (just grab the bin one) and see what happens?

left wing Jul 11, 2024, 5:03 PM

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knotty notch Can you drop the dist kernel in (just grab the bin one) and see what happens?

still doesn't work sadly :/

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potentially the camera is just not supported?

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but it's wierd cause it's a UVC

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I'm getting a thinkpad today

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which I plan on putting gentoo on

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I'll just use the same custom kernel (since it should work under it) and see if that webcam is detected at all

knotty notch Jul 11, 2024, 7:18 PM

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Weird. Does the other UVC camera work?

left wing Jul 11, 2024, 9:43 PM

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I don't have another one

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sadly :/

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I'm starting to install on a thinkpad now

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will come back with the results of that

left wing Jul 12, 2024, 3:58 AM

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@knotty notch I can see a video0 and video1 on my laptop

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sorry install took a hot minute :P

knotty notch Jul 12, 2024, 5:38 AM

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Woohoo. Why is desktop so weird?

left wing Jul 12, 2024, 2:27 PM

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knotty notch Woohoo. Why is desktop so weird?

that's a good question

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I am

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internally confused

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same build config too

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like legit just copy pasted it. Suprized it just works like that lol

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guess they are both amd. Had to change the march but that's p much it

left wing Jul 12, 2024, 8:42 PM

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cam is fully functional on laptop

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I am out of ideas

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maybe the webcam just doesn't work.

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if anyone comes across this with an idea feel free to ping me.

knotty notch Jul 12, 2024, 8:54 PM

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No idea. Obviously devices aren't being created for it. Udev?

left wing Jul 12, 2024, 9:09 PM

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sec

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doesn't seem to show up

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anywhere in the configs for systemd's udev as well. Idk if there is any init steps that would have to be done

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it worked on macos

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thonk

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I give up

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lol

left wing Jul 23, 2024, 2:23 AM

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so

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it's fixed

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I didn't do anything

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it just works

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¯_(ツ)_/¯

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I give up LOL

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potentially was an issue with an older kernel version

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or just a bug in one of the packages I needed

#Webcam not working