[mythtv-users] LIRC and MythBuntu 10.10

Jarod Wilson jarod at wilsonet.com
Fri Apr 15 14:59:32 UTC 2011

On Apr 15, 2011, at 9:25 AM, Mark Lord wrote:

> On 11-04-15 07:28 AM, Greg Hormann wrote:
>> This is exactly myth related, but it is such a knowledgeable community....
>> I just seem to have no luck with LIRC blasting.  I have an HD-PVR and
>> initially setup HD-PVR to perform the blasting via lirc_zilog.
>> (Followed the procedure outlined in
>> http://www.mythtv.org/wiki/Hauppauge_HD-PVR#HD-PVR_Driver_Compilation_Howto).
>> Unfortunately, the HD-PVR would lockup after a while with the
>> lirc_zilog loaded.  With the module unloaded, it seems fine.  (Too
>> bad, because ir blasting and the remote seemed to work fine!)
>> I then tried to configure using serial port.  I copied over the
>> lircd.conf file from the old server, setup hardware.conf and restarted
>> the service.  The lirc_serial module seems to correctly load, but the
>> it doesn't change the channels.  (Unfortunately this blaster doesn't
>> light up like the HD_PVR, so I can't see if a signal is actually being
>> sent, but if I plug it back into the old mythserver it still works..)
>> I found some notes suggesting there were some issues with serial
>> blasting in October and early January.
>> https://bugzilla.redhat.com/show_bug.cgi?id=658600
>> http://www.gossamer-threads.com/lists/mythtv/users/455608?do=post_view_threaded#455608
> The lirc_serial in many kernels was never tested before release,
> and has a nasty bug that prevents it from working.

Receive was tested and worked just fine, only transmit was broken.
This was fixed upstream ~3 months ago.

> If that fix is not already in Ubuntu-10.10, then you should probably
> pursue the Ubuntu kernel maintainers and try to get it added there.

Good luck, I tried pushing fixes to them several months ago for some
of the many issues their shipping imon driver has. Unless the fixes
came in via the -stable tree, it didn't meet their stable update
release criteria, or something like that. Since the imon bits in the
Ubuntu kernel were acquired via a backport, there's no corresponding
stable tree bits. Same thing for lirc_serial.

My suggestion for anyone running Ubuntu that is experiencing IR driver
issues is to go this route:


Jarod Wilson
jarod at wilsonet.com

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