Difference between revisions of "Force DVB Card Order"

Revision as of 13:50, 3 February 2013

Forcing DVB Card Order

Background

I built a system with two Hauppauge PCI DVB Cards, another Hauppauge PCI DVB Card (but is actually a USB Tuner) and a Hauppauge DVB-S2 card.... However these cards would appear on different '/dev/dvb/adapters' on each reboot, so I wrote this script. Note: I know this should be done with udev, however I couldn't get this to work correctly:

 #!/bin/bash
 #changed for 2x usb 1x pci 1x sat
 #changed for 2x usb 2x pci 1x sat
 usbcount=0
 pcicount=2
 satcount=4
 for x in 0 1 2 3
 do
         if [ -d /dev/dvb/adapter$x ]
         then
                 mv /dev/dvb/adapter$x /dev/dvb/rawadapter$x
         fi
 done
 rm -f /dev/dvb/adapter?
 for card in `find "/sys/devices/pci0000:00/" -iname "*frontend0" -printf "%p\n"`
 do
         #echo "$card"
         if [[ "$card" == *usb* ]]
         then
                 echo -en "Processing USB Card:\t"
                 id=${card: -11:1}
                 ln -s /dev/dvb/rawadapter${id} /dev/dvb/adapter${usbcount}
                 echo -en "adapter${usbcount} - usb\n"
                 let usbcount=$usbcount+1
         elif [[ ` lspci -k | grep ${card: 42:5}|wc -l` == 4 ]]
         then
                 echo -en "Processing Sat Card:\t"
                 id=${card: -11:1}
                 ln -s /dev/dvb/rawadapter${id} /dev/dvb/adapter${satcount}
                 echo -en "adapter${satcount} - sat\n"
                 let satcount=$satcount+1
         else
                 echo -en "Processing PCI Card:\t"
                 id=${card: -11:1}
                 ln -s /dev/dvb/rawadapter${id} /dev/dvb/adapter${pcicount}
                 echo -en "adapter${pcicount} - pci\n"
                 let pcicount=$pcicount+1
         fi
 done
 

The above script basically renames the 'adapter' devices to 'rawadapter', then creates symlinks to them, ensuring the 'order' of the symlinks is consistent.... So the usb cards are 0-1, pci 2-3 and Satellite 4.

Note the most upto date version of this script will be maintained on this page, and at [1]

Define registration order

An alternative approach has been reported here: http://www.fbcs.co.uk/wp/mythtv-getting-the-cards-in-the-right-order/

sudo nano /etc/modprobe.d/dvb.conf options dvb_usb_af9015 adapter_nr=0 options cx88-dvb adapter_nr=1,2