<div dir="ltr">Since the last time I used it for zoom in windows, I disconnected the USB. Now as I try your suggestions it works in Cheese and Zoom. I assume, like other times, if I leave it connected and try to use zoom later it will not work. Then when I shut the PC down I will get a USB error 110 (can't remember the exact syntax) and the webcam gets warm. None of these symptoms are present with windows, even when I used windows more than Ubuntu, a few weeks ago. <div>Ubuntu software center has the QV4L2 app, which I installed, but I don't know how to use it.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 27, 2022 at 11:49 AM Hika van den Hoven <<a href="mailto:hikavdh@gmail.com">hikavdh@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hoi Daryl,<br>
<br>
Friday, May 27, 2022, 4:17:21 PM, you wrote:<br>
<br>
> Hoi Daryl,<br>
<br>
> Friday, May 27, 2022, 3:24:40 PM, you wrote:<br>
<br>
>> Hoi Hika, I hope you still like solving puzzels. I need help<br>
>> solving this one, and it's not myth related. I run a dual boot<br>
>> windows 11 and Ubuntu 22.04. I have a 5 mega pixel webcam that works<br>
>> well in windows and rarely in Ubuntu. sometimes with "cheese" and<br>
>> even less with "Zoom". Because it always works in windows, I assume<br>
>> its a software issue. Googling it gets close, but not exactly it.<br>
>> Have you got any suggestions? TIA Daryl<br>
<br>
> This is almost certainly a driver problem. Look for which kernel<br>
> version do support this specific model. Check on <a href="http://kernel.org" rel="noreferrer" target="_blank">kernel.org</a> or<br>
> <a href="http://linuxtv.org" rel="noreferrer" target="_blank">linuxtv.org</a> and on the site from the manufacturer. You might have to<br>
> compile your own kernel driver.<br>
> I assume it's usb. On plugging in a /dev/videox, just like with an<br>
> analog tv card, should be created. Where x is a number, probably 0 but<br>
> depending on the presence of other analog video devices. It works<br>
> exactly the same as an analog tv-tuner. You can also create rules to<br>
> give the device a more meaningfull name.<br>
<br>
> This is my rule for my Logitec C270 webcam (I only use Logitec if<br>
> possible):<br>
<br>
> # Logitec HD webcam C270<br>
> # usb/vendor id 046d/0825 <br>
> # driver cx8800 with external soundcard<br>
> SUBSYSTEM=="video4linux", \<br>
> KERNEL=="video*", \<br>
> ATTRS{idVendor}=="046d", \<br>
> ATTRS{idProduct}=="0825", \<br>
> SYMLINK+="v4l/HD-C270/video"<br>
> SUBSYSTEM=="sound", \<br>
> KERNEL=="dsp*", \<br>
> ATTRS{idVendor}=="046d", \<br>
> ATTRS{idProduct}=="0825", \<br>
> SYMLINK+="v4l/HD-C270/audio"<br>
<br>
> Also you should then see an analog audio-in device for the mic. If you<br>
> use pulseaudio it should pop up in your audio preferences.<br>
<br>
<br>
One other thing. There is a v4l2 test utility "qv4l2". It's part of<br>
the v4l-utils package(Video for Linux).<br>
I do not know if it's available in Ubuntu or how exactly it is called.<br>
But it might be helpfull troubleshooting.<br>
<br>
<br>
<br>
Tot mails,<br>
Hika mailto:<a href="mailto:hikavdh@gmail.com" target="_blank">hikavdh@gmail.com</a><br>
<br>
"Zonder hoop kun je niet leven<br>
Zonder leven is er geen hoop<br>
Het eeuwige dilemma<br>
Zeker als je hoop moet vernietigen om te kunnen overleven!"<br>
<br>
De lerende Mens<br>
<br>
</blockquote></div>