[mythtv-users] Joy and pain (Daryl McDonald)

[Daryl McDonald]

On Wed, Feb 12, 2014 at 7:41 PM, NickS <nicks272 at yahoo.co.uk> wrote:
>
> I'm also running Mythbuntu (12.04) with a USB infrared receiver, and had the
> same problem. The following steps are how I've resolve it:
>
> *** 1. Identify the /dev/lirc mappings created at boot-time:
>
> ~$ ls /dev/lirc*
> /dev/lirc0  /dev/lirc1  /dev/lirc2  /dev/lircd
>
> ~$ dmesg | grep lirc
> [    7.675423] lirc_dev: IR Remote Control driver registered, major 250
> [    7.725757] rc rc0: lirc_dev: driver ir-lirc-codec (mceusb) registered at
> minor = 0
> [    7.937544] rc rc1: lirc_dev: driver ir-lirc-codec (saa716x) registered
> at minor = 1
> [   11.655015] rc rc2: lirc_dev: driver ir-lirc-codec (cx23885) registered
> at minor = 2
>
> In this case my mceusb device is number 0, i.e. /dev/lirc0 .
>
> *** 2. Get more info on /dev/lirc0 :
>
> ~$ udevadm info -a -p $(udevadm info -q path -n /dev/lirc0)
>
>   looking at device
> '/devices/pci0000:00/0000:00:12.0/usb4/4-3/4-3:1.0/rc/rc0/lirc0':
>     KERNEL=="lirc0"
>   ....
>   looking at parent device
> '/devices/pci0000:00/0000:00:12.0/usb4/4-3/4-3:1.0/rc/rc0':
>   ....
>   looking at parent device
> '/devices/pci0000:00/0000:00:12.0/usb4/4-3/4-3:1.0':
>   ....
>   looking at parent device '/devices/pci0000:00/0000:00:12.0/usb4/4-3':
>     ATTRS{idVendor}=="1784"
>     ATTRS{idProduct}=="0011"
>   ....
>
> *** 3. Create (or append to) the file
> /etc/udev/rules.d/z21-persistent-local.rules
> the following udev rule:
>
> KERNEL=="lirc*", ATTRS{idVendor}=="1784", ATTRS{idProduct}=="0011",
> SYMLINK+="input/irremote"
>
> Note how the specified elements match the output from step #2 above.
>
> *** 4. Reload the udev rules and test the new rule to make sure it works:
>
> ~$ sudo udevadm control --reload-rules
> ~$ sudo udevadm test -a -p  $(udevadm info -q path -n /dev/lirc0)
>
> You should see lines confirming that your rules file has been read, the rule
> has been applied and the link has been created:
>
> ....
> parse_file: reading '/etc/udev/rules.d/z21-persistent-local.rules' as rules
> file
> ....
> udev_rules_apply_to_event: LINK 'input/irremote'
> /etc/udev/rules.d/z21-persistent-local.rules:1
> ....
> link_update: creating link '/dev/input/irremote' to '/dev/lirc0'
> ...
> DEVLINKS=/dev/input/irremote
> DEVNAME=/dev/lirc0
> DEVPATH=/devices/pci0000:00/0000:00:12.0/usb4/4-3/4-3:1.0/rc/rc0/lirc0
>
> *** 5. Of course step 4 was just a test, so restart udev and check that you
> can see the device link itself:
>
> ~$ sudo /init.d/udev restart
> ~$ ls -l /dev/input/irremote
> lrwxrwxrwx 1 root root 8 Feb 13 00:19 /dev/input/irremote -> ../lirc0
>
> *** 6. Update /etc/lirc/hardware.conf to specify the device:
>
> REMOTE_DEVICE="/dev/input/irremote"
>
> *** 7. Restart lirc:
>
> ~$ sudo /etc/init.d/lirc restart
>
> And your remote should be working in the MythTV frontend :)
>
>
>
>
>
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My situation is a IR blaster, which controls a set top box, connected
via serial port, not usb. No remote involved.

Thanks anyway.    Daryl
>