[mythtv-users] zilog-rx-i2c high cpu usage, lirc_zilog errors (was Re: Sasktel IPTV (Microsoft Mediaroom) - Again.)

Chris Payne chrisgpayne at gmail.com
Sat Jun 4 14:10:17 UTC 2011


  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND

On Fri, Jun 3, 2011 at 10:43 PM, Greg Mitchell <greg at nodecam.com> wrote:

> Chris Payne wrote:
>
>  On Fri, Jun 3, 2011 at 4:08 PM, <greg at nodecam.com <mailto:
>> greg at nodecam.com>> wrote:
>>
>>
>>    I'm not using a lirc receiver at all - my backend is rarely used as a
>>    frontend, so I haven't bothered setting it up.
>>
>>    I followed the guide at
>>    http://www.blushingpenguin.com/mark/blog/?p=24 to
>>    get the hdpvr blaster going.  I can't remember what code set I wound up
>>    using, but I think it was in the 130 range.  I'll look it up when I get
>>    home.
>>
>>  Hi Greg-
>>
>> I managed to get my setup working. I found a config that worked in this
>> old mythtv post (before I subscribed)
>>
>
> 130 is the code set I'm using.  Are you sure the HDPVR is what's changing
> your channels for you?  The blaster on the HDPVR doesn't transmit whatever
> codes lirc tells it to (unless something has changed in the driver since I
> got mine set up)  Is it possible that your MCE device is actually doing the
> blasting?
>
> I've attached my lircd.conf here anyway, maybe it will prove useful to some
> future mailing list archaeologist...
>
> FWIW, Jarod Wilson monitors this list, and he's what you might call an
> expert on lirc/Fedora.  If you post a message with a lirc-y Fedora-y
> subject, you might attract his attention.  :)
>
>
A quick comparison does confirm we are using the same codes, I must have not
had my blaster aligned properly when trying the test codes. I am 100%sure
that the HDPVR is doing the blasting, as confirmed by it not working when
the IRBlaster is not aligned exactly right. My MCE IR receiver is in a
different location, out of line of sight of the STB.

Things are working well, one last detail is that I am seeing high cpu usage
from this related process:

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND

 1645 root      20   0     0    0    0 R 99.2  0.0   1238:40 zilog-rx-i2c-1


And some messages whenever the channel change script runs:

Jun  3 19:00:02 hptv lircd-0.9.0[1649]: accepted new client on
/var/run/lirc/lircd1
Jun  3 19:00:02 hptv lircd-0.9.0[1649]: removed client
Jun  3 19:00:02 hptv kernel: [28087.235192] lirc_zilog: i2c_master_recv
failed with -5 -- keeping last read buffer
Jun  3 19:00:02 hptv kernel: [28087.248190] lirc_zilog: i2c_master_recv
failed with -5 -- keeping last read buffer
Jun  3 19:00:03 hptv lircd-0.9.0[1649]: accepted new client on
/var/run/lirc/lircd1
Jun  3 19:00:03 hptv lircd-0.9.0[1649]: removed client
Jun  3 19:00:03 hptv kernel: [28088.148469] lirc_zilog: i2c_master_recv
failed with -5 -- keeping last read buffer
Jun  3 19:00:03 hptv kernel: [28088.161470] lirc_zilog: i2c_master_recv
failed with -5 -- keeping last read buffer

Which I am still investigating.
Chris
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