Public bug reported:
Installing v4l2loopback-dkms in blank vagrant VM (or VM on cloud
provider) creates a machine where v4l2loopback is installed by the
required kernel module videodev.ko is not installed.
dmseg shows missing symbols and the v4l2loopback module fails to load.
The workaround is to "apt-get install linux-image-generic", as this will
install the "linux-image-extra-*" package, which includes the
videodev.ko module.
This wasn't a problem with 16.04, quite likely because most VM images
weren't as stripped down as they are today, and thus, always included
linux-image-generic.
It's probably reasonable to just make v4l2loopback-dkms depends on
linux-image-generic.
Note: This might seem like a corner case, but arguably v4l2loopback is
often used for automated testing which often runs on VMs in the cloud.
** Affects: v4l2loopback (Ubuntu)
Importance: Undecided
Status: New
** Tags: unmetdeps
** Description changed:
- Installing v4l2loopback-dkms in blank vagrant VM (or VM on cloud provider)
creates a machine
- where v4l2loopback is installed by the required kernel module videodev.ko is
not installed.
+ Installing v4l2loopback-dkms in blank vagrant VM (or VM on cloud
+ provider) creates a machine where v4l2loopback is installed by the
+ required kernel module videodev.ko is not installed.
dmseg shows missing symbols and the v4l2loopback module fails to load.
- The workaround is to "apt-get install linux-image-generic", as this will
install
- the "linux-image-extra-*" package, which includes the videodev.ko module.
+ The workaround is to "apt-get install linux-image-generic", as this will
+ install the "linux-image-extra-*" package, which includes the
+ videodev.ko module.
- This wasn't a problem with 16.04, quite likely because most VM images weren't
as stripped down
- as they are today, and thus, always included linux-image-generic.
+ This wasn't a problem with 16.04, quite likely because most VM images
+ weren't as stripped down as they are today, and thus, always included
+ linux-image-generic.
It's probably reasonable to just make v4l2loopback-dkms depends on
linux-image-generic.
-
- Note: This might seem like a corner case, but arguably v4l2loopback is often
used for automated
- testing which often runs on VMs in the cloud.
+ Note: This might seem like a corner case, but arguably v4l2loopback is
+ often used for automated testing which often runs on VMs in the cloud.
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https://bugs.launchpad.net/bugs/1772695
Title:
missing package dependency on linux-image-extra-* / linux-image-
generic
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