[mythtv-users] lirc Channel Change Problems with IR-Blaster

Mike Smith easygreenus at yahoo.com
Wed Nov 25 18:15:04 UTC 2009


I have an SA3250 cable box that I've been changing channels on for years with 
Mythtv 0.21 using S-Video inputs to a Hauppauge 150.

I've been using the change.chan.pl script with a serial IR Blaster I purchased from
http://www.irblaster.info/.

I recently purchased the Hauppauge 1212 and upgraded to 0.22.  After this upgrade,
the change_chan.pl was still working.  I could control the STB.

I had problems with recording on the HD-PVR.  Still am.  I was making a lot of changes,
like upgrading firmware, upgrading the kernel.  At some point, the channel changing
stopped.

The original IR blaster has a red LED that is visible ( not infrared ) as a repeater signal.
When I manually change the channel, I see it blinking red, but the channel does not 
change.  I sued my cell phone camera to watch it.  It can see infrared.  It does not
appear the infrared signal is blinking signals.  So, I bought a new IR-Blaster from the
same company.  It arrived today.

It does not appear to have a visable repeater like the old one.  I hooked it up and tried
it.  It does not seem to work.  I do not see infrared flashing with my cell phone camera.

I get these messages in /var/log/messages:

Nov 25 13:12:20 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 13:12:20 lbk lircd-0.8.4a[3184]: removed client
Nov 25 13:12:21 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 13:12:21 lbk lircd-0.8.4a[3184]: removed client
Nov 25 13:12:22 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 13:12:22 lbk lircd-0.8.4a[3184]: removed client
Nov 25 13:12:23 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 13:12:23 lbk lircd-0.8.4a[3184]: removed client

These look normal.

I also tried to fall back to an older change_chan.sh script.  It did give an error:

Nov 25 12:57:45 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 12:57:45 lbk lircd-0.8.4a[3184]: removed client
Nov 25 12:57:45 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 12:57:45 lbk lircd-0.8.4a[3184]: removed client
Nov 25 12:57:46 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 12:57:46 lbk lircd-0.8.4a[3184]: removed client
Nov 25 12:57:46 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 12:57:46 lbk lircd-0.8.4a[3184]: removed client
Nov 25 12:57:47 lbk lircd-0.8.4a[3184]: accepted new client on /dev/lircd
Nov 25 12:57:47 lbk lircd-0.8.4a[3184]: error processing command: SEND_ONCE SA_3250 OK
Nov 25 12:57:47 lbk lircd-0.8.4a[3184]: unknown command: "OK"
Nov 25 12:57:47 lbk lircd-0.8.4a[3184]: removed client

Running FC10,  2.6.27.38-170.2.113.fc10.i686,  serial IR blaster,  Mythtv 0.22.

Any idea where I check next?


      


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