Difference between revisions of "LIRC"

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Run the "Software" utility from the "System Tools" menu and search for "lirc". Install the "lirc" package.  With some remotes, you may need the "lirc-disable-kernel" package. If you want to work with the source code of packages which use LIRC, install "lirc-devel".
Run the "Software" utility from the "System Tools" menu and search for "lirc". Install the "lirc" package.  With some remotes, you may need the "lirc-disable-kernel" package. If you want to work with the source code of packages which use LIRC, install "lirc-devel".
Edit the file "etc/sysconfig/lirc" and insert the correct driver name in the LIRC_DRIVER="..." line. Search the MythTV wiki for documentation on your particular remote control which should specify the driver.  There is also documentation or the LIRC project site.  Make sure that LIRC_DEVICE="/dev/lirc0" is explicitly defined as this no longer defaults if left blank. Save the file.
Edit the file "etc/sysconfig/lirc" and insert the correct driver name in the LIRC_DRIVER="..." line. Search the MythTV wiki for documentation on your particular remote control which should specify the driver.  There is also documentation on the LIRC project site.  Make sure that LIRC_DEVICE="/dev/lirc0" is explicitly defined as this no longer defaults if left blank. Save the file.
The keycode translation tables at "/etc/lirc/lircd.conf" and at "<UserID>/.mythtv/lircrc" need to be configured for the particular control. See the documentation for the particular remote. Run the MythTV front-end once to initialize the configuration directory.
The keycode translation tables at "/etc/lirc/lircd.conf" and at "<UserID>/.mythtv/lircrc" need to be configured for the particular control. See the documentation for the particular remote. Run the MythTV front-end once to initialize the configuration directory.

Revision as of 08:45, 16 November 2013

Clean.png Cleanup: This article or section may require cleanup. Discuss the issue on the talk page

Wikipedia has an article on:

LIRC stands for Linux Infrared Remote Control. It is required to use a generic* Remote Control with MythTV.


LIRC is a software package that gives your computer the ability to send and receive infra-red remote control signals when combined with appropriate hardware. Most distributions include LIRC packages, but you may have to compile it yourself if you wish to use certain features that the distribution packagers did not include.

  • It should be noted that many people bypass the need for LIRC altogether, and simply use a "learning remote control" and a infra-red keyboard receiver. Train the learning remote control to output the appropriate keyboard press for each button/label. Linux and MythTV will see it as a keyboard and you have a simple and straightforward infra-red controller.
  • LIRC is now built into the kernel and may not be required. Many MCE remotes may simply be recognized as a keyboard. This may or may not also require the use of "ir-keytable" based on your distro.


IR Reception (to MythTV)

In its most basic concept, you press the 'play' button on your remote control which sends an infra-red signal to a receiver connected to your computer. This receiver sends a signal to LIRC, which identifies that you hit the 'play' key on your remote and then generates a keystroke on your computer that instructs MythTV to play.

For the infra-red receiver, you have two choices about how you set it up to work with MythTV:

  • The preferred method is to use mythtv native LIRC support, where mythtv reads ~/.mythtv/lircrc for its own key configuration
  • An alternate approach uses irxevent which is an external program that can send key presses to MythTV as if you were pressing keys on the keyboard. irxevent reads ~/.lircrc (note the dot at the start of the filename)

The receiver may be connected to the computer via a serial port, USB, or by a dedicated chip built into a TV tuner card. Each different type of physical IR receiver has its own type of kernel module.

  • The kernel module (C) uses /dev/lirc (typically) to emit the pulse-length information, which is then parsed by the lircd process. The LIRC daemon (D) then uses the information from /etc/lircd.conf (E) to convert the pulse-lengths into button press information.
  • Lastly, all programs that use LIRC need a second configuration file which tells liblirc_client.so what button presses are to be translated into which commands for each client program using LIRC, including MythTV. Once the button presses have been converted into instructions by liblirc_client.so using the lircrc (F) file (~/.mythtv/lircrc in 0.20, but 0.21 will read ~/.lircrc as well), then they are ready to be used by MythTV. (G)
  • Note that the button names in /etc/lircd.conf must match the "button" configuration names you use in your lircrc file, but are otherwise completely up to you. The translations between the button names and the mythtv's internal names is done in the .lircrc or lircrc file, in the "config" line for a button. The "config" names must match what mythtv is expecting, and for the mythtv native LIRC support the "prog" line must say "prog = mythtv". This can be debugged with ircat (invoked as `ircat mythtv`).

IR Transmission (from MythTV)

You might want to use a transmitter if you want MythTV to control a cable or satellite box so it can record the right shows on the right channels.

This process starts by configuring the video source in the Mythtv-setup program to use an an external channel changing program. More specifically, the channel changing script is a per capture card property that is specified in the Input Connections section of mythtv-setup. If you are using LIRC, this program will be a [LircChannelChanger channel changing script] that invokes LIRC's irsend command, passing it appropriate arguments to send the channel changing IR codes.

Let's say MythTV wishes to tune to channel 2 (either to record a scheduled show or because it was instructed by the user viewing live TV), it invokes the external channel changing program passing it '2' as an argument. The channel changing script turns that into an invocation of irsend, and LIRC transmits the appropriate codes via your infra-red transmitter.

The transmitter and receiver mentioned above are two separate devices (sometimes packaged into a single box). You cannot transmit through a receiver or receive through a transmitter.

LIRC with Multiple External Tuners

If you are using a system with multiple external tuners, you can use LIRC to control each one independently. The proper irsend command for each tuner can be placed in a separate channel changing script, and then specified as an external channel changing program for the appropriate video source in the Mythtv-setup program.

Normally, only a single LIRC transmitter is required as long as each of the tuners have mutually exclusive remote codes, and the LIRC transmitter can placed in the line of sight of all tuners' IR receivers. In this configuration, each tuner will need a "Remote Block" setting in the lircd.conf file and irsend simply needs the correct REMOTE argument. This is probably the simplest solution to most multiple tuner systems.

However, there are some instances where unique control codes aren't possible, or simultaneous line of sight to the two receivers is not possible. In these cases, there are some options available:

  • Load multiple LIRC drivers using irsend's --device option. For some drivers, including lirc_serial (IR Blaster, etc.), this method won't work with multiple transmitters of the same type.
  • Use multiple IR emitters independently controlled by CommandIR Mini, a USB TX/RX combo device, with irsend's SET_TRANSMITTERS directive.
  • Multiple LIRC Drivers with multiple IR emitters of the same type without having to recompile lirc_serial.

Set up

Setting up LIRC can range from very easy to incredibly difficult. The difficulty level is likely related to what hardware you end up using for LIRC. There are several different hardware pieces for receiving and sending LIRC commands. A few are:

For Help Setting up LIRC on your computer, follow some of these excellent resources:

Migrating to LIRC 0.9.0+

As of 2.6.36, some infrared receiver drivers have been removed from LIRC and into the kernel. The following drivers are no longer available in lirc:

  • mceusb
  • streamzap
  • it8x
  • ene0100

Other LIRC drivers have been moved to staging. For example, the lirc_i2c driver is in this part of the kernel now. These changes have been backported to the 2.6.35 kernel for Fedora 14, and the 2.6.32 kernel used by RHEL and derivatives.


For me this broke my existing lirc MCE USB setup. As of March 2011, I had to do the following to fix it using 2.6.37 on gentoo: Note: I recently (Oct 2012) tried this migration again and failed. The version of lirc in portage and from the lirc site no longer work for me as described below (YMMV). I have since stopped using lirc and am migrating to Sapphire.

  1. Enable the lirc driver in the kernel and rebuild. For the MCE USB remote this was under: Device Drivers -> Multimedia support - > Infrared remote controller adapters -> Windows Media Center Ed. eHome Infrared Transceiver
  2. Loaded the new mceusb driver (reboot or modprobe mceusb) which created /dev/lirc0. The previous non-kernel modules created the device as /dev/lirc so this is different. Therfore I had add -d /dev/lirc0 as an option to lircd when it started (for me this change was in /etc/conf.d/lirc) so the binary knew where to find the driver
  3. lircd ran without error but irw still didn’t show my keypresses on the remote. lircd -v showed 0.8.5 which is not compatible with the new drivers. I removed 0.8.5 then downloaded 0.9.0pre1 from the lirc site and installed it myself (there was no gentoo ebuild at the time). Note that this also installed drivers lirc_dev and lirc_mceusb which are the old drivers. They aren't needed so I deleted them on my system to avoid confusion in the future. After that I restart lircd and irw and could see my keypresses being captured.
  4. My last issue was that when I started mythfrontend, when I pressed up/down twice it would move 4 or 5 times. This was due to the irevents being interpreted as both lirc events and as keypresses in the kernel. This was fixed by running echo lirc > /sys/class/rc/rc0/protocols which forces them to be processed as lirc events only. Note that command needs to be run on every reboot, so it should be added wherever your distro runs such commands (gentoo is /etc/conf.d/local.start)

Here are things I DIDN’T have to do:

  1. update /etc/lirc/lircd.conf

If you have issues

  1. Run lsmod | grep lirc_ to check that the old modules aren't loaded
  2. Check that /dev/lirc0 is being created after mceusb gets loaded. If not look at dmesg after modprobbing mceusb it for clues
  3. run lircd in non deamon mode by using lircd -n <whatever other options you need>. This will keep the output to the console so you can see what’s happening.
  4. Make sure irw shows your key presses. If that doesn’t work, chances are nothing else will.

Again this all based on my experience on gentoo with 2.6.37 & YMMV based on the distro in use - chances are some of this will be taken care of behind the scenes.

When using the PVR-250 (ivtv) video capture card as the platform to receive IR signals you will want to configure your kernel to support LIRC (CONFIG_LIRC=y), support staging (CONFIG_STAGING=y, CONFIG_LIRC_STAGING=y) and support the LIRC I2C driver as a module(CONFIG_LIRC_I2C=m). Kormoc has ebuilds available for LIRC 0.9.0 that should work sufficiently well with newer kernels. There is a bug filed to get a newer version of LIRC into portage. It has many votes, consider adding your vote there if you would like that or Kormoc's ebuild in portage.


Starting with Wheezy (testing) in April 2011, kernel 2.6.38 is available as the default linux-image and the required modules are included as modules.


Current versions of Fedora use the "systemd" boot sequence and include binaries of the LIRC package in the repositories which are set up for this boot sequence.

Incompatible Update - An incompatible update was promulgated on Fedora 19 at the end of October, 2013 so there are now two different versions of the package requiring different configurations. The easiest fix for this if the older version was installed is to restore the file "/usr/lib/systemd/system/lirc.service" from a backup. The new version can also be configured following the procedure below but the broken link at "/etc/systemd/system/multi-user.target.wants/lirc.service" should be removed and the file "/etc/sysconfig/lirc.rpmnew" should be renamed "lirc" to replace the existing file of that name.

As of Fedora 19 the installation procedure (for the new version) is as follows:

Run the "Software" utility from the "System Tools" menu and search for "lirc". Install the "lirc" package. With some remotes, you may need the "lirc-disable-kernel" package. If you want to work with the source code of packages which use LIRC, install "lirc-devel".

Edit the file "etc/sysconfig/lirc" and insert the correct driver name in the LIRC_DRIVER="..." line. Search the MythTV wiki for documentation on your particular remote control which should specify the driver. There is also documentation on the LIRC project site. Make sure that LIRC_DEVICE="/dev/lirc0" is explicitly defined as this no longer defaults if left blank. Save the file.

The keycode translation tables at "/etc/lirc/lircd.conf" and at "<UserID>/.mythtv/lircrc" need to be configured for the particular control. See the documentation for the particular remote. Run the MythTV front-end once to initialize the configuration directory.

Open a root shell (or use "sudo") and execute the commands:

systemctl enable lircd.socket
systemctl start lircd.socket"

Execute the command "irw" and press keys on the remote. The codes should appear on the terminal. There could be a short delay before it starts to respond. Press "Ctrl-C" to terminate.

If only the arrow keys respond and produce odd codes, the kernel may be trapping the remote and trying to make it a keyboard. See comments below on dealing with this problem.


Ubuntu 11.04 will ship with 2.6.38 and pre-release reports would indicate it will work.

Setting Up The Devinput Option

The in-kernel drivers support the ir keycodes, however, mythtv cannot currently use the interpreted codes so must use lirc as a bridge. The new drivers will break the configuration of pre 0.9.0 lirc setups. The devinput option uses the same setup for all of the receivers listed above.

This has been tested on Fedora 14 running and Debian Wheezy (testing) with kernel 2.6.38-2.

  1. Install ir-keytable either from v4l-utils or the package of the same name (depending on distribution).
  2. Install the lirc-remotes RPM or lirc package to obtain various example lircd.conf files.
  3. Run ir-keytable to verify a driver has been loaded for your IR receiver
[root@myth1 ~]# ir-keytable
Found /sys/class/rc/rc0/ (/dev/input/event3) with:
	Driver streamzap, table rc-streamzap
	Supported protocols: NEC RC-5 RC-6 JVC SONY LIRC other 
	Enabled protocols: NEC RC-5 RC-6 JVC SONY LIRC other 
	Repeat delay = 500 ms, repeat period = 33 ms

Alternative command. The protocols that are in brackets are enabled.

[root@myth1 ~]# cat /sys/class/rc/rc#/protocols
[rc-5] [nec] [rc-6] [jvc] [sony] [lirc]
  1. Copy /usr/share/lirc-remotes/devinput/lircd.conf.devinput to /etc/lirc/lircd.conf
  2. Specify the devinput driver in /etc/sysconfig/lirc (LIRC_DRIVER="devinput") or in hardware.conf for Debian based systems.
  3. Determine which /dev/input device is available by looking in /dev/input/by-id.
  4. Specify the /dev/input device in /etc/sysconfig/lirc (LIRC_DEVICE="/dev/input/by-id/foo") or in hardware.conf for Debian based systems.
  5. Restart lirc.
  6. Check that your configuration is working by running irw and pressing some keys.
  7. You may need to change settings in mythtv. Under settings > general menu, look for the lirc setting. The device has moved in to /var/run/lirc/lircd.

Notes on Ubuntu/Mythbuntu 11.10 configuration:

  1. In hardware.conf edit REMOTE_DRIVER and REMOTE_DEVICE instead of LIRC_DRIVER and LIRC_DEVICE.
  2. Set LOAD_MODULES="false" in hardware.conf. For some reason with this set to "true", which is the default, the lirc service will not initialize properly.


The lircrc file defines the mapping between the buttons on your own remote (as defined in the lircd.conf) and the functions you actually want it to perform.

Keybindings has a list of all the keys used, which can be used in your lircrc file.

With native LIRC support, MythTV can use Qt keys, removing the prefix Qt::Key_. Not all of MythTV's key names match their Qt counterparts, however. Instead of Period and Comma, for example, use the symbols (. and ,) themselves. Instead of PageUp and PageDown, use PgUp and PgDown.

Keys can also have a modifier applied. These are case sensitive.

Tip: To find the exact syntax for a key (especially when it does not match QT keys), run the MythTV Frontend and go to Edit Keys. Select the function you want to invoke and look at the up to 4 key assignments at the bottom of the screen. The text displayed there will be what you need to use (for example PgDown).

For example, Setting the (Gray Hauppauge's) Power button to be Qt::CTRL Qt::Key_Escape:

  prog = mythtv
  remote = Hauppauge_Gray
  button = Power
  config = CTRL+Escape

Important.png Note: This also works as CTRL+'Esc', but NOT 'Ctrl'+Escape

"remote" is optional, but if you have multiple remotes configured in your lircd.conf e.g. for IR Blasting, you can use this line to make sure that only commands from the correct remote are used.

To configure the TV button to jump to Live TV by using the key sequence Qt::ALT Qt::Key_L,

  • Add or modify your lircrc to contain
  prog = mythtv
  remote = Hauppauge_Gray
  button = TV
  repeat = 3
  config = ALT+L
  • Restart mythfrontend
  • Go to Setup/Edit Keys/JumpPoints
  • Select Live TV
  • Press enter (until you see a dialog appear, that says it is waiting for a keypress)
  • Press the TV button on your remote

Hopefully, you will now see Alt-L listed!



Use the irw program to see whether LIRC and your remote are working before going any further. It shows what events are generated by your remote. This is very helpful!

The irw tool connects to the lircd socket and displays any recognized IR signals detected by the driver. If this works, then your hardware, driver and lirc.conf is working; all that remains is your application setup. If irw does not generate the expected output though, not all is lost -- see the mode2 command below.


You can enable logging for lircd with the -L option. Use this to see the results of clients connecting to lircd daemon. Compiling lircd with debugging enabled (-D option) allows you to see much more including parsing of the remote definitions.

# /usr/local/sbin/lircd --device=/dev/lirc/0 /etc/lirc/lircd.conf -L ~/lircd.log -D7
  • The log file showing "accepted new client" immediately followed by "removed client" can indicate a a ~/.lircrc or ~/.mythtv/lircrc parsing error. Check the formatting.

Make the LIRC device static

If you have more than one input device on your system, the numbering may change from one reboot to the next. You can [use udev] to ensure the input device corresponding to your remote has a name that does not change across reboots.

You may notice that it only works if you have only one card with the same vendor ID. If you have more than one card from the same vendor, but with a different name, you can use the following line to create the /dev/input symlink:

ln -fs /dev/input/`cat /proc/bus/input/devices|grep -A 3 "Hauppauge Nova-S-Plus"|grep event|cut -d ' ' -f3` /dev/input/irremote

You should run this line before running lirc, for example add it to /etc/init.d/lirc here:

echo -n "Starting lirc daemon:"
ln -fs /dev/input/`cat /proc/bus/input/devices|grep -A 3 "Hauppauge Nova-S-Plus"|grep event|cut -d ' ' -f3` /dev/input/irremote
if $START_LIRCD; then

Using an udev rule may be more elegant, but I found this one liner to be more reliable.

The above failed for me for two reasons - one, my device is not an S-plus, and two, I have more than one of the same card. My small modification of the above one-liner should work for everyone:

ln -fs /dev/input/`cat /proc/bus/input/devices | grep -A 3 "Hauppauge" | grep event | cut -d ' ' -f3 | head -n1` /dev/input/irremote

The above fails on Ubuntu 10.04. A solution to this is: (Not tested on dual card setups)

ln -fs /dev/input/event$(cat /proc/bus/input/devices | grep -A 3 "Hauppauge" | grep Sysfs | sed -e "s/^.*\(.\)$/\1/") /dev/input/irremote

This makes a symbolic link in /dev/input called "irremote" this will always point to the Hauppauge event.


The command mode2 will give each separate pulse for button pushes. Some buttons have different pulses for pushing the button than for releasing the button. Using mode2 will show all pulses and is a lower-level lirc testing tool than irw.


Depending on your setup, lirc may be looking for either /dev/lirc0 or /dev/lirc, and the wrong one will obviously break things. You can use ln -s /dev/lirc0 /dev/lirc or ln -s /dev/lirc /dev/lirc0 to fix this.


If you know LIRC is working, and mapped correctly in the lircrc file, but is not doing anything in MythTV, you may want to check your LircSocket (frontend settings). This was a problem for me with MythTV 0.22 installed via atrpms on Centos 5.4. After installing lirc manually, I had to change the LircSocket setting from /var/run/lirc/lircd to /dev/lircd to get it to work. The frontend log should contain clues that it was not able to connect to the lircd socket. /var/run/lirc/lircd is the default location for the lircd socket for lirc 0.8.6 and higher.

Double presses for certain buttons

You may find that you are getting double hits for some of your buttons (example: arrows) but not all of your buttons. The kernel may be listening to your remote as well as lircd. Check and see if it is:

cat /sys/class/rc/rc0/protocols

You should see something like: rc-5 nec rc-6 jvc sony mce_kbd [lirc]

If anything other than lirc has the brackets, then you need to do the following:

Create a file in /etc/udev/rules.d called remote-control-lirc.rules and put this line in it:

SUBSYSTEM=="rc", ATTRS{protocols}=="*lirc*" RUN+="/bin/sh -c 'echo lirc > /sys$env{DEVPATH}/protocols'"

After creating that file, test the rule by running:

$ udevadm test /devices/pci0000:00/0000:00:06.0/usb4/4-5/4-5:1.0/rc/rc2

(replacing that path with whatever the link in /sys/class/rc points to currently). You should see a line at the end of the output saying it's going to run the echo lirc command.

Later, when you reboot or disconnect/reconnect the receiver, the udev rule should detect the new location of the receiver and echo lirc to the appropriate file.

Reboot for changes to take effect.

Source: http://www.gossamer-threads.com/lists/mythtv/users/504746#504746

Key things to remember

  • Set up /etc/lircd.conf to fit your remote.
  • Don't try to use a lircrc file written for irxevent if you are trying to use MythTV native LIRC support, see Lirc on Ubuntu Dapper as the basis for your own file. Or search for mythtv/configfiles/hauppauge-lircrc-nativelirc to use it as a template.
  • If you're using a PVR-350, at least, it won't work with stock LIRC. You need 0.7.0 (as mentioned in Jarod's Guide)
  • If you're using a PVR-500MCE, please read this page: MCE_Remote

Multiple remotes

See MultiLIRC for my mods to the standard Debian Lenny lirc installation for running multiple lirc remotes and keeping everything separate.

Distribution-specific notes

Ubuntu/Mythbuntu lircrc generation

Mythbuntu provides a package that will intelligently parse your lircd.conf file and attempt to create valid button mappings for use in MythTV and other media player applications. Note that the use of this package is contingent on your remote being properly installed and working. You can install and invoke this package as follows:

sudo apt-get install lirc mythbuntu-lirc-generator

Restart mythfrontend. Your remote should now work with MythTV!

Please note that there is a bug which causes duplicate mappings to be generated. This can cause remote input to be processed twice. For instance if you press "down" and the menu selection moves down two items or if you press "pause" and the recording immediately pauses and then starts playing again. For more information please see the the Ubuntu Launchpad bug 779835.

Fedora 14 x86_64 Hauppauge PVR 150

Credit goes to:

Jarod Wilson http://wilsonet.com/?p=40

Mark Weaver http://www.blushingpenguin.com/mark/blog/?p=24

1: Get firmware

Download firmware from:


and copy to /lib/firmware

2: Get lircd.conf

http://www.blushingpenguin.com/mark/lmilk/lircd.conf and copy to /etc/lirc/lircd.conf

3: Probe the modules

/sbin/modprobe lirc_dev debug=1 && modprobe lirc_zilog

4: restart lirc

/etc/init.d/lirc restart

5: Make it permament

edit rc.local and add to the bottom

/sbin/modprobe lirc_dev debug=1 && modprobe lirc_zilog

Debian Wheezy amd64 Hauppauge PVR 350

Lirc configuration on Debian Wheezy (testing) for Hauppauge PVR-350 and A415-HPG-WE remote

This text is a manual for the configuration. It worked on my machine with the hardware described. Obviously, there is more than one remote out there for the PVR-350, all with slightly different settings. There is also lots of descriptions for older lirc versions. These are almost useless for lirc 0.9.0 as part of the kernel.


AMD Phenom X2 box

Hauppauge PVR-350 card

A415-HPG-WE remote (the model as shown in this picture: [1])


Debian Wheezy (testing / June 2011)

Kernel: 2.6.38-2-amd64

lirc: 0.9.0-pre1

Files in /etc/lirc



# /etc/lirc/hardware.conf
# Arguments which will be used when launching lircd

#Don't start lircmd even if there seems to be a good config file

#Don't start irexec, even if a good config file seems to exist.

#Try to load appropriate kernel modules

# Run "lircd --driver=help" for a list of supported drivers.
# usually /dev/lirc0 is the correct setting for systems using udev 

# Default configuration files for your hardware if any

To find out what to enter into DEVICE="", check out

cat /proc/bus/input/devices

Look for section where you can find this information:

I: Bus=0018 Vendor=0000 Product=0000 Version=0000
N: Name="i2c IR (Hauppauge WinTV PVR-350"
P: Phys=i2c-0/0-0018/ir0
S: Sysfs=/devices/virtual/rc/rc0/input10
U: Uniq=
H: Handlers=kbd event8
B: EV=100013
B: KEY=c0010 201080400000000 0 30200a000 18000004801 9e000000000000 ffc
B: MSC=10

The line starting with H says event8. Meaning that we can find our remote under /dev/input/event8


copy lircd.conf.devinput from /usr/share/lirc/remotes/devinput to /etc/lirc/:

cp /usr/share/lirc/remotes/devinput/lircd.conf.devinput /etc/lirc/lircd.conf
Set up key map for A415-HPG-WE remote

I've got the almost correct keymap for the remote from /lib/udev/rc_keymaps and copied it into /etc/rc_keymaps/:

cp /lib/udev/rc_keymaps/haupp /etc/rc_keymaps/

The difference is, that all codes start with 0x1e.., while 0x00.. would be correct for my remote. File should though look like this (i've called this file haupp350):

# table haupp, type: UNKNOWN
0x0000 KEY_0
0x0001 KEY_1
0x0002 KEY_2
0x0003 KEY_3
0x0004 KEY_4
0x0005 KEY_5
0x0006 KEY_6
0x0007 KEY_7
0x0008 KEY_8
0x0009 KEY_9
0x000b KEY_RED
0x000c KEY_RADIO
0x000d KEY_MENU
0x000e KEY_GRAVE
0x000f KEY_MUTE
0x0014 KEY_UP
0x0015 KEY_DOWN
0x0016 KEY_LEFT
0x0017 KEY_RIGHT
0x0018 KEY_VIDEO
0x0019 KEY_AUDIO
0x001a KEY_MEDIA
0x001b KEY_EPG
0x001c KEY_TV
0x001e KEY_NEXT
0x001f KEY_BACK
0x0024 KEY_LAST
0x0025 KEY_OK
0x0029 KEY_BLUE
0x002e KEY_GREEN
0x0030 KEY_PAUSE
0x0035 KEY_PLAY
0x0036 KEY_STOP
0x003b KEY_GOTO
0x003d KEY_POWER

Then i've edited /etc/rc_maps.cfg to look like the following:

*       *       /etc/rc_keymaps/haupp350

The above is the only uncommented line

Time for a restart now (or try restarting just udev?)

Invoke irw, and press buttons on your remote to check if everything is working. You should get an output like this:

0000000080010193 00 KEY_CHANNELDOWN devinput                                    
0000000080010071 00 KEY_MUTE devinput
00000000800100a7 00 KEY_RECORD devinput

Now, we have to adjust ~/.lircrc. The name like KEY_CHANNELDOWN has to be attached to the appropiate keyboard key for mythtv. My .lircrc looks like this (this is an evolved file from other tutorials and howto's):

# lircrc Hauppauge PVR-350 with lirc 0.9.0
# save it in ~/.lircrc

# begin mythtv

    prog = mythtv
    button = KEY_POWER
    config = Esc
#    mode = irexec
    repeat = 0

    prog = mythtv
    button = KEY_GOTO
# Swap the PiP windows
    config = N

    prog = mythtv
    button = KEY_1
    config = 1

    prog = mythtv
    button = KEY_2
    config = 2

    prog = mythtv
    button = KEY_3
    config = 3

    prog = mythtv
    button = KEY_4
    config = 4

    prog = mythtv
    button = KEY_5
    config = 5

    prog = mythtv
    button = KEY_6
    config = 6

    prog = mythtv
    button = KEY_7
    config = 7

    prog = mythtv
    button = KEY_8
    config = 8

    prog = mythtv
    button = KEY_9
    config = 9

    prog = mythtv
    button = KEY_BACK
    config = Esc

    prog = mythtv
    button = KEY_0
    config = 0

    prog = mythtv
    button = KEY_MENU
    config = M

   prog = mythtv
# This is the Red key
# We'll use it for "Delete"
   button = KEY_RED
   config = D

   prog = mythtv
# This is the Green key
# We'll use it for "Information"
   button = KEY_GREEN
   config = I

# Note the "repeat =" strings in the volume and channel.
# This means that if you hold down the key, every nth instance will be
# passed.  This depends on your system, so you may want to increase or
# decrease this and see what happens.  repeat = 1 is probably too
# fast.

    prog = mythtv
    button = KEY_CHANNELUP
    repeat = 3
    config = Up

    prog = mythtv
    button = KEY_CHANNELDOWN
    repeat = 3
    config = Down

    prog = mythtv
    button = KEY_VOLUMEDOWN
    repeat = 3
    config = F10

    prog = mythtv
    button = KEY_VOLUMEUP
    repeat = 3
    config = F11

    prog = mythtv
    button = KEY_OK
    config = Return

    prog = mythtv
    button = KEY_MUTE
    config = F9

    prog = mythtv
    button = KEY_REWIND
    repeat = 3
    config = Left

    prog = mythtv
    button = KEY_PLAY
    config = P

    prog = mythtv
    button = KEY_FASTFORWARD
    repeat = 3
    config = Right

  prog = mythtv
  button = KEY_RECORD
  config = R

   prog = mythtv
   button = KEY_STOP
   config = Esc

    prog = mythtv
    button = KEY_PAUSE
    config = P

   prog = mythtv
   button = KEY_LAST
# Use for backwards commercial skip
    config = Q

   prog = mythtv
   button = KEY_NEXT
# Use for forward commercial skip
    config = Z

   prog = mythtv
   button = KEY_EPG
# Use for showing program
    config = S

   prog = mythtv
   button = KEY_UP
# Use it
    config = Up

   prog = mythtv
   button = KEY_LEFT
# Use it
    config = Left

   prog = mythtv
   button = KEY_RIGHT
# Use it
    config = Right

   prog = mythtv
   button = KEY_DOWN
# Use it
    config = Down
# end mythtv

Hints for trouble shooting

The correct scancodes can be found out using evtest for scancodes:

aptitude install evtest

run evtest and press buttons. Results on my box (pressing all buttons from top left to lower right row after row) key events come from crappy default keytable, not the right one we've already installed above:

  Event: time 1307978095.428942, type 4 (Misc), code 4 (ScanCode), value 3b
  Event: time 1307978113.528933, type 4 (Misc), code 4 (ScanCode), value 3d
  Event: time 1307978113.780007, type 1 (Key), code 205 (Suspend), value 0
  Event: time 1307967746.640939, type 4 (Misc), code 4 (ScanCode), value 1c
  Event: time 1307967769.144944, type 4 (Misc), code 4 (ScanCode), value 18
  Event: time 1307967777.144944, type 4 (Misc), code 4 (ScanCode), value 19
  Event: time 1307967784.248940, type 4 (Misc), code 4 (ScanCode), value 1a
  Event: time 1307967801.752937, type 4 (Misc), code 4 (ScanCode), value 1b
  Event: time 1307979946.568937, type 4 (Misc), code 4 (ScanCode), value 0c
  Event: time 1307979946.568956, type 1 (Key), code 116 (Power), value 1
Arrow up:
  Event: time 1307967842.552948, type 4 (Misc), code 4 (ScanCode), value 14
Arrow left:
  Event: time 1307967853.560945, type 4 (Misc), code 4 (ScanCode), value 16
Arrow right:
  Event: time 1307967920.060940, type 4 (Misc), code 4 (ScanCode), value 17
Arrow down:
  Event: time 1307967934.060943, type 4 (Misc), code 4 (ScanCode), value 15
  Event: time 1307967940.960939, type 4 (Misc), code 4 (ScanCode), value 25
  Event: time 1307967865.260940, type 4 (Misc), code 4 (ScanCode), value 1f
Menu (i):
  Event: time 1307968088.664955, type 4 (Misc), code 4 (ScanCode), value 0d
  Event: time 1307968088.916003, type 1 (Key), code 113 (Mute), value 0
Vol +:
  Event: time 1307968120.364935, type 4 (Misc), code 4 (ScanCode), value 10
  Event: time 1307968120.364954, type 1 (Key), code 115 (VolumeUp), value 1
Vol -:
  Event: time 1307968134.164942, type 4 (Misc), code 4 (ScanCode), value 11
  Event: time 1307968134.164960, type 1 (Key), code 114 (VolumeDown), value 1
Prev. Ch:
  Event: time 1307968019.960937, type 4 (Misc), code 4 (ScanCode), value 12
  Event: time 1307968019.960956, type 1 (Key), code 225 (Brightness up), value 1
  Event: time 1307968055.860942, type 4 (Misc), code 4 (ScanCode), value 0f
  Event: time 1307968055.860958, type 1 (Key), code 377 (TV), value 1
Ch. +:
  Event: time 1307968156.868936, type 4 (Misc), code 4 (ScanCode), value 20
  Event: time 1307968156.868953, type 1 (Key), code 402 (ChannelUp), value 1
Ch. -:
  Event: time 1307968167.068941, type 4 (Misc), code 4 (ScanCode), value 21
  Event: time 1307968167.320005, type 1 (Key), code 403 (ChannelDown), value 0
  Event: time 1307968178.968940, type 4 (Misc), code 4 (ScanCode), value 37
  Event: time 1307968179.220008, type 1 (Key), code 167 (Record), value 0
  Event: time 1307968191.568940, type 4 (Misc), code 4 (ScanCode), value 36
  Event: time 1307968191.568959, type 1 (Key), code 128 (Stop), value 1
Search backwards:
  Event: time 1307968199.768944, type 4 (Misc), code 4 (ScanCode), value 32
  Event: time 1307968199.768963, type 1 (Key), code 168 (Rewind), value 1
  Event: time 1307968210.568949, type 4 (Misc), code 4 (ScanCode), value 35
  Event: time 1307968210.568968, type 1 (Key), code 207 (Play), value 1
Search forward:
  Event: time 1307968218.072942, type 4 (Misc), code 4 (ScanCode), value 34
  Event: time 1307968228.672937, type 4 (Misc), code 4 (ScanCode), value 24
  Event: time 1307968237.072939, type 4 (Misc), code 4 (ScanCode), value 30
  Event: time 1307968237.072957, type 1 (Key), code 119 (Pause), value 1
  Event: time 1307968246.672941, type 4 (Misc), code 4 (ScanCode), value 1e
  Event: time 1307968246.672961, type 1 (Key), code 217 (Search), value 1
  Event: time 1307968260.273040, type 4 (Misc), code 4 (ScanCode), value 01
  Event: time 1307968260.273060, type 1 (Key), code 2 (1), value 1
  Event: time 1307968279.976939, type 4 (Misc), code 4 (ScanCode), value 02
  Event: time 1307968279.976960, type 1 (Key), code 3 (2), value 1
  Event: time 1307968292.876941, type 4 (Misc), code 4 (ScanCode), value 03
  Event: time 1307968292.876956, type 1 (Key), code 4 (3), value 1
  Event: time 1307968305.976937, type 4 (Misc), code 4 (ScanCode), value 04
  Event: time 1307968305.976959, type 1 (Key), code 5 (4), value 1
  Event: time 1307968314.676946, type 4 (Misc), code 4 (ScanCode), value 05
  Event: time 1307968314.676965, type 1 (Key), code 6 (5), value 1
  Event: time 1307968384.076945, type 4 (Misc), code 4 (ScanCode), value 06
  Event: time 1307968384.076966, type 1 (Key), code 7 (6), value 1
  Event: time 1307968351.376944, type 4 (Misc), code 4 (ScanCode), value 07
  Event: time 1307968351.376964, type 1 (Key), code 8 (7), value 1
  Event: time 1307968412.776940, type 4 (Misc), code 4 (ScanCode), value 08
  Event: time 1307968412.776959, type 1 (Key), code 9 (8), value 1
  Event: time 1307968422.576950, type 4 (Misc), code 4 (ScanCode), value 09
  Event: time 1307968422.576970, type 1 (Key), code 10 (9), value 1
  Event: time 1307968435.376937, type 4 (Misc), code 4 (ScanCode), value 0a
  Event: time 1307968443.176924, type 4 (Misc), code 4 (ScanCode), value 00
  Event: time 1307968443.427990, type 1 (Key), code 11 (0), value 0
  Event: time 1307968452.976938, type 4 (Misc), code 4 (ScanCode), value 0e
  Event: time 1307968459.980935, type 4 (Misc), code 4 (ScanCode), value 0b
  Event: time 1307968459.980954, type 1 (Key), code 363 (Channel), value 1
  Event: time 1307968474.584948, type 4 (Misc), code 4 (ScanCode), value 2e
  Event: time 1307968474.584969, type 1 (Key), code 139 (Menu), value 1
  Event: time 1307968484.284916, type 4 (Misc), code 4 (ScanCode), value 38
  Event: time 1307968492.884941, type 4 (Misc), code 4 (ScanCode), value 29

See Also

External Links