Using the daily focal image (2020-03-30) with identical
raspberrypi/userland everything works "out of the box":
# uname -a
Linux ubuntu 5.4.0-1006-raspi2 #6-Ubuntu SMP Mon Mar 16 13:08:46 UTC 2020
aarch64 aarch64 aarch64 GNU/Linux
# /opt/vc/bin/vcgencmd get_camera
supported=1 detected=1
#
Public bug reported:
On fully upgraded Ubuntu 18.04 aarch64 the vc_sm_cma kernel module does
not expose /dev/vcsm-cma, thus application working with the Raspberry Pi
Camera, e.g. raspivid, do not work properly.
$ lsb_release -a
No LSB modules are available.
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb3853 F pulseaudio
Date: Sun Nov 9 13:54:23 2014
HibernationDevice: RESUME=UUID=1968620e
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb3853 F pulseaudio
Date: Sun Nov 9 13:54:23 2014
HibernationDevice: RESUME=UUID=1968620e
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb3853 F pulseaudio
Date: Sun Nov 9 13:54:23 2014
HibernationDevice: RESUME=UUID=1968620e-56f2-4ec6-b4ae-d2c601e8caa5
InstallationDate: Installed
3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb
3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb3853 F pulseaudio
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC1: ahb3853 F pulseaudio
/dev/snd/controlC0: ahb3853 F pulseaudio
Date: Sun Nov 9 13:54:23 2014
HibernationDevice: RESUME=UUID=1968620e-56f2-4ec6-b4ae-d2c601e8caa5
InstallationDate: Installed on 2014-08-28 (72 days
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