[EN] (Solved) Skype - No video Logitech Quickcam Pro 4000

[cylverbak]

I've just installed siduction 2012.2.0~rc1 64 bit version on my Dell 6200 Inspiron.

Skype (Debian multiarch) finds the webcam and audio is setup and working fine. Problem is, the camera is not turning on. This is skype 4.1. The problem occurs with Siduction 32 bit & 64 bit.

Manjaro 64 bit (archlinux based) is having the same problem with Skype 4.0 (4.1 not in their repos yet), audio but no video.

Mepis 12 (based on debian Wheezy) is running Skype 4.1 perfectly.

Not sure where to look for a fix. Any one else having the same problem? Suggestions on where to start looking for a fix?

Thanks

[dibl]

It might be the "LD_PRELOAD" issue -- I have that on my old Logitech Quickcam Commicate STX.

Make sure you have installed the libv4l-0 package.  Then, make a little bash script that looks like this:

Code: [Select]

#!/bin/sh
export XLIB_SKIP_ARGB_VISUALS=1
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so skype
exit 0

Give it a name ("skypelauncher.sh") and chmod +x to make it executable.  Test it and see if launches skype with video enabled.  If it works, you can edit the skype launch icon to call this script instead of the skype executable.

[devil]

It is a LD_Preload issue triggered by the latest libv4 update. The changelog of that update has the correct phrase (which might be identical with what dibl just posted) no time to check now.

greetz
devil

[cylverbak]

Thanks guys, I'll give it a try in the morning

[cylverbak]

Sorry to say, but that fix did not work. Audio is good, webcam recognized but the camera doesn't turn on. Kernel issue perhaps?

Linux 3.6-7.towo-siduction-amd64 #1 SMP PREEMPT Thu Nov 22 08:03:30 UTC 2012 x86_64 GNU/Linux

[ReinerS]

Hmm, just tested the new skype and it also doesnt't use the video-camera over here (like most versions before).

I also used dibl's little script and it brought me:

Code: [Select]

ERROR: ld.so: object '/usr/lib/x86_64-linux-gnu/libv4l/v4l1compat.so' from LD_PRELOAD cannot be preloaded: ignored.
libv4l0 is installed  and system is on todays actual level.

Any guess what could be wrong ?

regards

Reiner

Edit:I tested it in the meantime with /usr/lib/i386-linux-gnu/libv4l/v4l1compat.so,. Now there was nor error-message and skype loaded after a while but again =>> no video. You can select the camera but the testscreen stays dark.
Even worse skype stays in  the memory and blocks the video-devices. Even kill -9 dosen't. help to get rid of it. Reboot is neded.

[towo]

Since skype is 32bit, it makes not many sense to preload a 64bit-lib.

[ReinerS]

@towo: I tried that without any preload and also with the 32-Bitversion of the lib.
Different but no video (I have put the description of that in an edit of my last post beacuse when I started the edit your answer hadn't arrved then)

regards

Reiner

[cylverbak]

I'm so glad I'm not the only one experiencing this problem . . .

Just a quick update:

My first post was slightly errous.

Skype video does not work on THIS machine with Siduction 64 bit OR 32 bit.
It doesn't work with Manjaro 64 bit.
It does NOT work with Mepis 64 bit or 32 bit.

Audio in all three distros works fine, webcam is recognized, just black screen.

Now, on my Pentium IV machine (32 bit), Skype is working fine with both Siduction and Mepis with no loading changes for Skype required.

It appears to be a machine specific problem here, no idea why. At least two different kernels are involved so it's not kernel specific I don't think.

[cylverbak]

just thought to try running Skype from terminal . . . I'm on Manjaro 64 (Arch based). I'll try on Siduction later today.

Going to Options > Video Devices > throws the following error - libv4l2: error turning on stream: No space left on device

oh nuts, I'l reboot and try it now . . . back in a few . . .

Edit: I was expecting identical error messages. Good thing I checked. No error with Video Options, just doesn't work.

Just ALSA complaining but sound is working fine.

ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave

This is with kernel 3.6-8.towo-siduction-amd64

[ReinerS]

Well,
I am not that much surprised. Skype used to work once I(not very good) with that camera but this is quite long ago. Since then it relanever worked with video on my box.

Other programs can use video here withoutany problem. Even googl+ did.
So I donot use skype normally at all. Only when I realize that there is a new version i give it another try (Like actually).

regards

Reiner

[dibl]

Since skype is 32bit, it makes not many sense to preload a 64bit-lib.

That is true, now I that I think about it.  This skype installation has been set up since before multiarch.  If I had to reinstall it now, video might not work.  I guess I will be thankful, and leave it alone!

[devil]

Works fine here with a LogiTech cam.

greetz
devil

[ReinerS]

Whats about using the 32-Bit-lib for that instead ?

The problems that I have with skype are pretty long going on and with the 32-Bit lib skype behaved asI had it experienced before (just no video, I use the gspca_zc3xx module for the camera)).
As it works by now for you it might well continue to work for you further on..
Well a complete system-backup should probably be considered before trying that.

regards

Reiner

[devil]

I never needed to do anything. Worked ootb right aftger connecting with Logitech C270. Then changed to multiarch (after the dust settled) and it still works.

greetz
devil