you might try a find /sys -name "rc1*" and see if some piece of hw has
that name. It may be some driver trying to manage the ir remote
hardware.
When I do it on my machine I get this:
find /sys -name "rc1*" -ls
33248 0 drwxr-xr-x 5 root root 0 May 8
15:50 /sys/devices/pci0000:00/0000:00:14.4/0000:04:06.2/rc/rc1
33252 0 lrwxrwxrwx 1 root root 0 May 8
15:50 /sys/class/rc/rc1 ->
../../devices/pci0000:00/0000:00:14.4/0000:04:06.2/rc/rc1
lspci | grep -i 04:06
04:06.0 Multimedia video controller: Conexant Systems, Inc.
CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
04:06.1 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3
PCI Video and Audio Decoder [Audio Port] (rev 05)
04:06.2 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3
PCI Video and Audio Decoder [MPEG Port] (rev 05)
04:06.4 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3
PCI Video and Audio Decoder [IR Port] (rev 05)
modinfo cx88 shows it has a parameter disable_ir
Yours may be a cx88 I think they are pretty common or some similar
card. To find it I did lsmod | grep dvb and then lsmod | grep cx88
and modinfo the various pieces and mine does have a disable for ir.
On Sat, May 26, 2018 at 4:48 PM, John Pilkington <johnpilk222@xxxxxxxxx> wrote:
> On 26/05/18 21:04, stan wrote:
>>
>> On Sat, 26 May 2018 13:38:29 +0100
>> John Pilkington <johnpilk222@xxxxxxxxx> wrote:
>>
>>> I just upgraded my kde/f26 system to f27 using dnf. It seems to be
>>> working well but dmesg has
>>>
>>> <timestamp> rc rc1: error -5
>>>
>>> repeated around 10 times per second. ISTR that when I first saw it
>>> it was rc0:
>>>
>>> Searching hasn't been much help. I use MythTV but not the lirc
>>> infra-red remote-control features, and thought it might be
>>> lirc-related, so installed lirc-disable-kernel-rc. But the messages
>>> continue. They make it impossible to query dmesg for anything else.
>>>
>>> /etc/rc.d includes various Kxxx files, and rc-local.service is
>>> 'static'
>>>
>>> Suggestions please...
>>
>>
>> No specific idea, but anything writing that often should be visible in
>> top. Once you know what program it is, you can use rpm -qf to find
>> which package it is.
>>
>> You could also try disabling dmesg logging, and see what complains.
>> Does anything show up in journalctl -r?
>
>
> Thanks to both Samuel and stan for your responses.
>
> Yes, there are 2 tuners cards, one PCI and one usb. The spam continued when
> I unplugged the usb device; I don't want to disable them unless all else
> has failed.
>
> I had looked at atop, and can compare what I see with another very similar
> 'production' box running the same MythTV version under SL7.5. The spam
> continues in f27 with MythTV inactive.
>
> systemd-journal and rsyslogd are active; rcu_sched shows up intermittently.
> There's also more akonadi activity which I don't knowingly use.
>
> journalctl -r looks as if it ought to be useful but I haven't used it before
> on either box. Before the 26>27 upgrade it looks as if it was almost
> exclusively pulseaudio stuff, switching between intel and nvidia for reasons
> that were never clear; now it looks much denser and almost all kde related.
>
> I'll try a reboot and leaving MythTV inactive.
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