[mythtv-users] HD PVR and IR transmitter for channel change (why)

[Brian Wood]

On Thursday, December 16, 2010 04:50:21 pm Ramin K wrote:
> On 12/16/2010 3:29 PM, Brian Wood wrote:
> > Hmm, I get 2040:4900 and the sticker says C1, this was bought
> > shortly after they became available.
> > 
> > Seems like they must have *some* reason for changing things. Guess
> > I'm just curious.
> 
> The only difference between them when walking the usb tree is the
> Serial, Product, and urbnum which is randomly assigned.
> 
> udevadm info -a -p $(udevadm info -q path -n /dev/video1)
> Here's the one for a 4903. I wonder if you see see any difference
> between it and the 4900 you have.
> 
>    looking at parent device
> '/devices/pci0000:00/0000:00:09.0/0000:06:00.0/0000:07:00.2/usb4/4-4'
> : KERNELS=="4-4"
>      SUBSYSTEMS=="usb"
>      DRIVERS=="usb"
>      ATTRS{configuration}==""
>      ATTRS{bNumInterfaces}==" 1"
>      ATTRS{bConfigurationValue}=="1"
>      ATTRS{bmAttributes}=="c0"
>      ATTRS{bMaxPower}=="  4mA"
>      ATTRS{urbnum}=="1688"
>      ATTRS{idVendor}=="2040"
>      ATTRS{idProduct}=="4903"
>      ATTRS{bcdDevice}=="0000"
>      ATTRS{bDeviceClass}=="00"
>      ATTRS{bDeviceSubClass}=="00"
>      ATTRS{bDeviceProtocol}=="00"
>      ATTRS{bNumConfigurations}=="1"
>      ATTRS{bMaxPacketSize0}=="64"
>      ATTRS{speed}=="480"
>      ATTRS{busnum}=="4"
>      ATTRS{devnum}=="16"
>      ATTRS{devpath}=="4"
>      ATTRS{version}==" 2.00"
>      ATTRS{maxchild}=="0"
>      ATTRS{quirks}=="0x0"
>      ATTRS{avoid_reset_quirk}=="0"
>      ATTRS{authorized}=="1"
>      ATTRS{manufacturer}=="AMBA"
>      ATTRS{product}=="Hauppauge HD PVR"
>      ATTRS{serial}=="xxxxxxx"
> 
> Ramin

I get:

  looking at device 
'/devices/pci0000:00/0000:00:02.1/usb1/1-1/1-1:1.0/video4linux/video2':
    KERNEL=="video2"
    SUBSYSTEM=="video4linux"
    DRIVER==""
    ATTR{name}=="Hauppauge HD PVR"
    ATTR{index}=="0"

  looking at parent device 
'/devices/pci0000:00/0000:00:02.1/usb1/1-1/1-1:1.0':
    KERNELS=="1-1:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="hdpvr"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bNumEndpoints}=="02"
    ATTRS{bInterfaceClass}=="ff"
    ATTRS{bInterfaceSubClass}=="02"
    ATTRS{bInterfaceProtocol}=="00"
    ATTRS{modalias}=="usb:v2040p4900d0000dc00dsc00dp00icFFisc02ip00"
    ATTRS{supports_autosuspend}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:02.1/usb1/1-1':
    KERNELS=="1-1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="c0"
    ATTRS{bMaxPower}=="  4mA"
    ATTRS{urbnum}=="27"
    ATTRS{idVendor}=="2040"
    ATTRS{idProduct}=="4900"
    ATTRS{bcdDevice}=="0000"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="480"
    ATTRS{busnum}=="1"
    ATTRS{devnum}=="5"
    ATTRS{version}==" 2.00"
    ATTRS{maxchild}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{authorized}=="1"
    ATTRS{manufacturer}=="AMBA"
    ATTRS{product}=="Hauppauge HD PVR"
    ATTRS{serial}=="00A1DC34"


Some differences, but I do not know enough to interpret them.