100% cpu lircd after installing 8.2.1

dbldown768 · December 26, 2017 at 9:32 PM

I just upgraded my intel nuc to 8.2.1 and after doing so, i am noticing 100% cpu load on 1 cpu. That load appears to be coming from lircd. If i kill that process, the remote still works and the cpu goes back to normal. problem is, ever startup I have this problem. Anyone have any thoughts as to why?

Code

top - 15:24:55 up 5 min,  1 user,  load average: 1.08, 0.75, 0.35
Tasks: 145 total,   2 running, 143 sleeping,   0 stopped,   0 zombie
%Cpu(s):  6.1 us, 19.2 sy,  0.0 ni, 74.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3919184 total,  2818424 free,   385132 used,   715628 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  3185184 avail Mem


  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
  359 root      20   0   22348   3372   3056 R  99.2  0.1   5:54.44 /usr/sbin/lircd --nodaemon --release /etc/lirc/lircd.conf
  789 root      20   0 2994980 392236  87100 S   1.6 10.0   0:21.23 /usr/lib/kodi/kodi.bin --standalone -fs --lircdev /run/lirc/lircd
 1046 root      20   0    9148   1972   1704 R   0.8  0.1   0:00.18 top
    1 root      20   0   19980   5632   4168 S   0.0  0.1   0:01.51 /usr/lib/systemd/systemd
    2 root      20   0       0      0      0 S   0.0  0.0   0:00.00 [kthreadd]

Display More

Kodi logs:

External Content pastebin.com

Content embedded from external sources will not be displayed without your consent.

Through the activation of external content, you agree that personal data may be transferred to third party platforms. We have provided more information on this in our privacy policy.

**HiassofT** · December 26, 2017 at 9:46 PM

Disable Lirc in LE settings -> Services and reboot.

Not sure why it's causing 100% CPU usage though.

so long,

Hias

dbldown768 · December 27, 2017 at 4:44 PM

thanks that worked. What is the purpose of having the lirc daemon running? Having it off doesnt seem to make a difference.

**HiassofT** · December 28, 2017 at 9:17 AM

In most cases you don't need lirc, the majority of remotes are supported directly by the linux kernel.

It's main purpose is to support rather odd remotes that aren't supported by the kernel and to use standard remotes with older IR receiver drivers (like lirc_rpi on the Raspberry Pi) that don't offer in-kernel decoding of remote signals - therefore lirc currently ships with a default config that is similar to the kernel default IR config.

In LE9 support for those older lirc-only IR drivers will be dropped and the plan is to use Lirc only for those "odd remotes" and only if the user installed a custom lirc configuration file.

so long,

Hias