Hi Kieran, On Mon, 19 Feb 2018, Kieran Bingham wrote:
> Hi Alexandre, > > Thankyou for your bug report, > > On 17/02/18 20:47, Alexandre-Xavier Labonté-Lamoureux wrote: > > Hi, > > > > I'm running Linux 4.9.0-5-amd64 on Debian. I built the drivers from > > the latest git and installed the modules. > > Could you please be specific here? > > Are you referring to linux-media/master branch or such? The latest from > Linus' tree? > > Please also detail the steps you have taken to reproduce this issue - and of > course - if you have made any code changes to make the latest UVC module > compile > against a v4.9 kernel... > > Building the latest git tree and installing as a module on a v4.9 kernel is > quite a leap... I wouldn't have expected that to work. > > The code would have to be compiled against a v4.9 kernel directly, and I > didn't > think compiling the UVC driver against older kernels worked. > > (at least it didn't work cleanly when I tried to compile v4.15 against a v4.14 > kernel last month) > > > Now, two device nodes are > > created for my webcam. This is not normal as it has never happened to > > me before. If I connect another webcam to my laptop, two more device > > nodes will be created for this webcam. So two new device nodes are > > created for a single webcam. > > I believe Guennadi's latest work for handling meta-data (in the latest > v4.16-rc1 > I think) will create two device nodes. That's correct. The lower index node (/dev/video0) is a video node, the higher videoo node (/dev/video1) is a metadata node. > > The name of my webcam appears twice in the device comobox in Guvcview > > because of this. One of them will not work if I select it. > > It would be expected that only the device with video functions as a streaming > camera device, while the other would not. Exactly. > > My webcam has completely stopped working with Cheese and VLC. > > This part is of particular concern however. > > Guennadi - Have you tested Cheese/VLC with your series? Sure, with cheese you can specify which camera you need by using its --device= parameter. Eventually it's expected, that those programs will be updated to recognise metadata nodes and not attempt to use them. Thanks Guennadi > Are there any known issues that need looking at ? > > >> v4l2-ctl --list-devices > > Laptop_Integrated_Webcam_E4HD: (usb-0000:00:1a.0-1.5): > > /dev/video0 > > /dev/video1 > > > >> ls /dev/video* > > /dev/video0 /dev/video1 > > > > Have a nice day, > > Alexandre-Xavier > > Regards > > Kieran Bingham > >
