Mythtv on Ubuntu 20.04 (edit: mostly ir-keytable/lirc issue)

[nexzzt]

Ah OK, looks good to me. Moving on...

[Lester_Burnham]

Did a fresh install of 20.04LTS and no luck with ir-keytable. While all the remote buttons work using ir-keytable -t, only a few work in apps. All 4 arrow keys and the Return key are the only ones that worked in app or CL iirc. Not sure why it doesn't work. More info here.
https://answers.launchpad.net/ubuntu/+question/690977

But no response yet. In the meantime, I've just switched to using mini wireless KB's.

Hi,

In 20.04 with ir-keytable I didn’t have to set a config file. (rc_maps.cfg) I remember years ago I needed a config as you have done, but not this time.
With mine I just had to copy the remote file from “sudo cp /lib/udev/rc_keymaps/rc6_mce.toml /etc/rc_keymaps/“ then modify the button presses to suit what key I wanted to see output. Need to reload config and restart the frontend to test from memory.
Maybe it’s something as simple as your old config is tripping it up.

Lester

[wesnewell]

Could be. Problem is my remote uses my own codes that I uploaded to the remote. I've added an entry for it in /lib/udev/rc_keymaps/
wes@mythfe0:~$ ls /lib/udev/rc_keymaps/my*
/lib/udev/rc_keymaps/myremotes.toml
But I'm not sure it's in the right format yet. Been busy with something else and will get back to this later.

[Lester_Burnham]

No worries.
What ever is in /etc/rc_keymaps/ is loaded by default, otherwise if you only have your remote config in /lib/udev/rc_keymaps/ you will need to tell it what to load. Which is what your config used to do.

You could try just copying your config to /etc/rc_keymaps/ and reload ir-keytable to see what happens.

My rc6_mce.toml has the likes of these codes in there. The scan code is very different to yours.
0x800f0408 = "KEY_8" #WAS KEY_NUMERIC_8
0x800f0409 = "KEY_9" #WAS KEY_NUMERIC_9
0x800f040a = "KEY_DELETE"
0x800f040b = "KEY_ENTER"
0x800f040c = "KEY_SLEEP"
0x800f040d = "KEY_M" #WAS KEY MEDIA

Good luck when you get around to it.
Lester

[wesnewell]

OK, finally took some time to look into this more and got it working in all apps and CL. Had to redo my rc-map file because the one from 18.04 wouldn't load properly and renamed it to *.toml. Once I did that, I had to manually load it. I also copied it to lib/udev/rc_keymaps dir and usr/lib/udev/rc_keymaps. I don't know if that's needed but... To get it to load automatically on boot, I had to make it the top entry in /etc/rc_maps.cfg.
Here's portions of that;

# Table to automatically load the rc maps for the bundled IR's provided with the
# devices supported by the linux kernel
mceusb * /etc/rc_keymaps/myremotes.toml

#driver table file
* rc-adstech-dvb-t-pci adstech_dvb_t_pci.toml

And here's the top of my map file.Note the equal signs and quotes. Also had to remove trailing comments from original.

[[protocols]]
name = "myremotes"
protocol = "nec"
variant = "nec"
[protocols.scancodes]
0x0f = "KEY_F12"
0x2b = "KEY_L"
0x29 = "KEY_T"
0x26 = "KEY_B"
0x21 = "KEY_COMMA"

Hope this gives you enough to get yours working.

[Lester_Burnham]

Hi,

I see some smart cookie on the mailing list figured out the new lirc remote and blasting setup. I was interested in the remote part and it works well. I just needed to tweak the mythtv lircrc to match some remote buttons for an mceusb. Need to look at irexec Now to launch apps.

https://www.mythtv.org/wiki/FTDI_USB_IR ... using_LIRC

I’m fine with what I have now, but it’s good to have options.
Lester

[nouglywires]

Thanks for this thread, and thanks especially to wesnewell who got me pointed in the right direction. Here are the details of what i did to get my remote control working again with MythTV after upgrading from 18.04 to 20.04.1:

Had to redo my rc-map file because the one from 18.04 wouldn't load properly and renamed it to *.toml.

KEY_RETURN (the numpad Enter key) is no longer supported; I had to make that KEY_ENTER.

You must add sections for protocols and protocols.scancodes. Here's the new preamble in my /etc/rc_keymaps/rc6_mce.toml. The Debian manual page for ir-keytable lists some known protocols and variants:

Code: Select all

[[protocols]]
name = "myremotes"
protocol = "rc-6"
variant  = "rc-6-mce"
[protocols.scancodes]  

Previously, this simple format was supported:

Code: Select all

0x800f0412 KEY_PAGEUP

Now you must code

Code: Select all

0x800f0412 = "KEY_PAGEUP"

I ran sudo ir-keytable --write=/etc/rc_keymaps/rc6_mce.toml and lo! my remote control worked again.

I have only one copy of the file - /etc/rc_keymaps/rc6_mce.toml - and the first line of /etc/rc_maps.cfg points to it:

Code: Select all

mceusb * /etc/rc_keymaps/rc6_mce.toml

I hope someone finds this helpful.