Package: v4l2loopback-dkms Version: 0.8.0-4 Severity: important Dear Maintainer,
After installing this package on debian stable, the kernel module is not automatically loaded. The workaround is to run this every time: $ sudo modeprobe v4l2loopback Which *appears* to have no problems according to /var/logs/kern.log: =====8<---------------------------------------- Mar 4 20:51:33 host kernel: [14443.590541] Linux video capture interface: v2.00 Mar 4 20:51:33 host kernel: [14443.593673] v4l2loopback driver version 0.8.0 loaded =====8<---------------------------------------- However, the problem comes when simply trying to use it in the most basic way. E.g.: $ gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video0 results in: =====8<---------------------------------------- Setting pipeline to PAUSED ... Pipeline is PREROLLING ... Pipeline is PREROLLED ... Setting pipeline to PLAYING ... New clock: GstSystemClock ERROR: from element /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0: Internal data flow error. Additional debug info: gstbasesrc.c(2933): gst_base_src_loop (): /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0: streaming task paused, reason error (-5) Execution ended after 0:00:00.000351581 Setting pipeline to PAUSED ... Setting pipeline to READY ... =====8<---------------------------------------- Note that 'ls /dev/video0' shows the device is present. If the same hardware boots Linux Mint instead of Debian stable, there is no problem. This package installs completely, so that modprobe is automatically run on boot, and the gstreamer test works, as well as any other content given over gstreamer. So this is likely a problem with the debian packaging. -- System Information: Debian Release: 8.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages v4l2loopback-dkms depends on: ii dkms 2.2.0.3-2 v4l2loopback-dkms recommends no packages. Versions of packages v4l2loopback-dkms suggests: pn v4l2loopback-utils <none> -- no debconf information
