Please can you help. I'm trying to move from Windows 10 to Ubuntu 20.04.6 LTS 20.04 focal. The microscope camera is an essential tool in my research.
This is a re-post of a deleted post which was deservedly flamed for a lack of clarity & formatting. I apologise. This post is clear & nicely formatted but may contain redundant information and too many words.
The camera works & is recognised by guvcview. Cheese and MIImageView do not find the camera when I have root permission. Nothing is mounted in /media when the camera is attached.
Could the problem be that cheese and MIImageView expect <something> to be mounted on <some-path>? The camera generates a UUID but I can not mount from it. Surely there should be some clean way of generating a mount point (if that is the solution) for legacy software!
Would the path reported by the udevadm command below vary depending on what other USB devices were mounted, where, and in what order etc? https://ubuntuforums.org/showthread.php?t=2071236 implies that it does vary.
...used "some udev rules. [He] made a new file in /etc/udev/rules.d/ and called it "15-addison.rules".
The rules ... are of the form:
SUBSYSTEM=="video4linux", ATTRS{serial}=="A52EE700", SYMLINK+="camright"
SUBSYSTEM=="video4linux", ATTRS{serial}=="E966A1E0", SYMLINK+="camtleft"
SUBSYSTEM=="video4linux", ATTRS{serial}=="6903B710", SYMLINK+="cambleft"
SUBSYSTEM=="video4linux", ATTRS{serial}=="520EE700", SYMLINK+="camsec1"
SUBSYSTEM=="video4linux", ATTRS{serial}=="111EE700", SYMLINK+="camsec2"
If mount could use a UUID How to assign camera source by its USB identity? did not get an answer about this. I ran lsusb and used the UUID it generated in a mount command: sudo mount -U 0ac8:3420 /media and got this error message.
mount: /media: can't find UUID="0ac8:3420".
If I can't mount from a UUID then I can't automount from a UUID. Is mount broken?
That's enough words; I'm going back to my [too much information] research.
What!? Are you a microbiologist? A gastroenterologist? If you still really want to know then please read my profile.
lsusb edited output
Bus 001 Device 006: ID 0ac8:3420 Z-Star Microelectronics Corp. Venus USB2.0 Camera
v4l2-ctl --list-devices
USB CAMERA (usb-0000:00:14.0-3.4):
/dev/video0
/dev/video1
4 relevant lines from dmesg
[ 3.192523] kernel: usb 1-3.4: New USB device found, idVendor=0ac8, idProduct=3420, bcdDevice= 0.10
[ 3.192539] kernel: usb 1-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.192547] kernel: usb 1-3.4: Product: USB CAMERA
[ 3.192552] kernel: usb 1-3.4: Manufacturer: 4H1TEK
4 new drivers appear in /dev when camera is plugged in
52a53
> media0
185a187
> v4l
214a217,218
> video0
> video1
udevadm info --attribute-walk --name=/dev/media0 edited output
looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.4/1-3.4:1.0/media0':
KERNEL=="media0"
SUBSYSTEM=="media"
DRIVER==""
ATTR{model}=="USB CAMERA "0"`
udevadm info --attribute-walk --name=/dev/v4l edited output
Unknown device "/dev/v4l": Inappropriate ioctl for device
udevadm info --attribute-walk --name=/dev/video0 edited output
looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.4/1-3.4:1.0/video4linux/video0':
KERNEL=="video0"
SUBSYSTEM=="video4linux"
DRIVER==""
ATTR{index}=="0"
ATTR{name}=="USB CAMERA "
ATTR{dev_debug}=="0"
udevadm info --attribute-walk --name=/dev/video1 edited output
looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3.4/1-3.4:1.0/video4linux/video1':
KERNEL=="video1"
SUBSYSTEM=="video4linux"
DRIVER==""
ATTR{index}=="1"
ATTR{dev_debug}=="0"
ATTR{name}=="USB CAMERA "
