Public bug reported: * Distribution: VM Distribution is Ubuntu 22.04 x86_64, Host Distribution is Ubuntu 22.04 x86_64
# Issue description I can't install the v4l2loopback kernel modules in the VM because the kernel was compiled without v4l2 support. Please compile the kernel with v4l2 support or tell me how to do this. Please see this [relevant issue](https://github.com/umlaeute/v4l2loopback/issues/59#issuecomment-351082960) in v4l2loopback alotting to kernel compilation without v4l2 support # Steps to reproduce 1. `lxc launch ubuntu:22.04 ubuntu-vm --vm` 2. `lxc exec ubuntu-vm -- su - ubuntu` 3. `sudo apt update` 4. `sudo apt install -y gcc make build-essential` 5. `git clone https://github.com/umlaeute/v4l2loopback` 6. `cd v4l2loopback` 7. `make` # Information to attach ``` ubuntu@ubuntu-vm:~/doc/v4l2loopback$ make Building v4l2-loopback driver... make -C /lib/modules/`uname -r`/build M=/home/ubuntu/doc/v4l2loopback KCPPFLAGS="-DSNAPSHOT_VERSION='"0.12.7-398-g5bb9bed"'" modules make[1]: Entering directory '/usr/src/linux-headers-5.15.0-1044-kvm' CC [M] /home/ubuntu/doc/v4l2loopback/v4l2loopback.o MODPOST /home/ubuntu/doc/v4l2loopback/Module.symvers ERROR: modpost: "video_ioctl2" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_event_unsubscribe" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_event_pending" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_add" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_init" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_format_info" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_exit" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_del" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "video_devdata" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "__video_register_device" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! WARNING: modpost: suppressed 14 unresolved symbol warnings because there were too many) make[2]: *** [scripts/Makefile.modpost:133: /home/ubuntu/doc/v4l2loopback/Module.symvers] Error 1 make[2]: *** Deleting file '/home/ubuntu/doc/v4l2loopback/Module.symvers' make[1]: *** [Makefile:1830: modules] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-5.15.0-1044-kvm' make: *** [Makefile:53: v4l2loopback.ko] Error 2 ``` ** Affects: linux-meta-kvm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-meta-kvm in Ubuntu. https://bugs.launchpad.net/bugs/2038939 Title: Kernels are not compiled with V4L2 support Status in linux-meta-kvm package in Ubuntu: New Bug description: * Distribution: VM Distribution is Ubuntu 22.04 x86_64, Host Distribution is Ubuntu 22.04 x86_64 # Issue description I can't install the v4l2loopback kernel modules in the VM because the kernel was compiled without v4l2 support. Please compile the kernel with v4l2 support or tell me how to do this. Please see this [relevant issue](https://github.com/umlaeute/v4l2loopback/issues/59#issuecomment-351082960) in v4l2loopback alotting to kernel compilation without v4l2 support # Steps to reproduce 1. `lxc launch ubuntu:22.04 ubuntu-vm --vm` 2. `lxc exec ubuntu-vm -- su - ubuntu` 3. `sudo apt update` 4. `sudo apt install -y gcc make build-essential` 5. `git clone https://github.com/umlaeute/v4l2loopback` 6. `cd v4l2loopback` 7. `make` # Information to attach ``` ubuntu@ubuntu-vm:~/doc/v4l2loopback$ make Building v4l2-loopback driver... make -C /lib/modules/`uname -r`/build M=/home/ubuntu/doc/v4l2loopback KCPPFLAGS="-DSNAPSHOT_VERSION='"0.12.7-398-g5bb9bed"'" modules make[1]: Entering directory '/usr/src/linux-headers-5.15.0-1044-kvm' CC [M] /home/ubuntu/doc/v4l2loopback/v4l2loopback.o MODPOST /home/ubuntu/doc/v4l2loopback/Module.symvers ERROR: modpost: "video_ioctl2" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_event_unsubscribe" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_event_pending" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_add" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_init" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_format_info" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_exit" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "v4l2_fh_del" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "video_devdata" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! ERROR: modpost: "__video_register_device" [/home/ubuntu/doc/v4l2loopback/v4l2loopback.ko] undefined! WARNING: modpost: suppressed 14 unresolved symbol warnings because there were too many) make[2]: *** [scripts/Makefile.modpost:133: /home/ubuntu/doc/v4l2loopback/Module.symvers] Error 1 make[2]: *** Deleting file '/home/ubuntu/doc/v4l2loopback/Module.symvers' make[1]: *** [Makefile:1830: modules] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-5.15.0-1044-kvm' make: *** [Makefile:53: v4l2loopback.ko] Error 2 ``` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-kvm/+bug/2038939/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
