Video source problems

[harrijay]

I have a small problem with my current setup. I currently have 1 PVR-150, 1 PVR-500 and 1 A180. The issue I am having is that whenever I reboot the server the video0, video1, video2, video3, which are all dynamically assigned on reboot move around based on when the A180 is loaded. I am trying to get a udev rule setup to do this and I have one working but it looks like sage is not looking at the symlinks from the rules that I have setup. can anyone provide insight as to what sage is looking for when giving avaliable video sources?

Jayson

[harrijay]

yeah never really thought I would be answering my own post but just in case anyone is in the same situation or gets in the same situation this is what I did to get it working for me.

You need to start by getting some information about the hardware you have in your system.

sudo udevinfo -a -p /class/video4linux/video0
Udevinfo starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/class/video4linux/video0':
    KERNEL=="video0"
    SUBSYSTEM=="video4linux"
    DRIVER==""
    ATTR{name}=="saa7133_0_ video _AVerMedia AVe"
    ATTR{dev}=="81:0"

  looking at parent device '/devices/pci0000:00/0000:00:08.0/0000:02:07.0':
    KERNELS=="0000:02:07.0"
    SUBSYSTEMS=="pci"
    DRIVERS=="saa7134"
    ATTRS{msi_bus}==""
    ATTRS{broken_parity_status}=="0"
    ATTRS{enable}=="1"
    ATTRS{modalias}=="pci:v00001131d00007133sv00001461sd00001044bc04sc80i00"
    ATTRS{local_cpus}=="ff"
    ATTRS{irq}=="20"
    ATTRS{class}=="0x048000"
    ATTRS{subsystem_device}=="0x1044"
    ATTRS{subsystem_vendor}=="0x1461"
    ATTRS{device}=="0x7133"
    ATTRS{vendor}=="0x1131"

There is more information that gets spit out for each device but this contains all of the info you need. you mainly only need the line in there that starts with ATTRS{modalias}==. Copy the pci:... from there and enter in your rules. continue on for the rest of the video inputs you have and get the same info just changing the 0 at the end to a 1,2,3 and so on.

Now open a new file for editing so you can add your new rules.

 sudo nano /etc/udev/rules.d/10-local.rules

Here are my rules that work for me

KERNEL=="video[0-9]", ATTRS{modalias}=="pci:v00001131d00007133sv00001461sd00001044bc04sc80i00" , NAME="video0", GROUP="video"
KERNEL=="video[0-9]", ATTRS{modalias}=="pci:v00004444d00000016sv00000070sd00008801bc04sc00i00" , NAME="video1", GROUP="video"
KERNEL=="video[0-9]", ATTRS{modalias}=="pci:v00004444d00000016sv00000070sd0000E807bc04sc00i00" , NAME="video2", GROUP="video"
KERNEL=="video[0-9]", ATTRS{modalias}=="pci:v00004444d00000016sv00000070sd0000E817bc04sc00i00" , NAME="video3", GROUP="video"

now just restart udev by

sudo /etc/init.d/udev restart

I also restarted sage for good measure and the new labels are now accessible.