[mythtv-users] 2 recordings failed at the same time

John Pilkington johnpilk222 at gmail.com
Mon Oct 26 10:57:14 UTC 2020


On 26/10/2020 10:41, Stephen Worthington wrote:
> On Mon, 26 Oct 2020 06:01:56 -0400, you wrote:
> 
>> My log file has always been sprinkled with these 2 Permission denied
>> errors.
>>
>> /Oct 25 19:00:23 mythbuntu mythpreviewgen[57623]: mythpreviewgen[57623]:
>> I CoreContext platforms/mythpowerdbus.cpp:530 (AcquireLock) PowerDBus:
>> Failed to delay sleep,shutdown: Permission denied/
>> Oct 25 19:00:23 mythbuntu mythpreviewgen[57623]: mythpreviewgen[57623]:
>> I CoreContext platforms/mythpowerdbus.cpp:360 (DeviceAdded) PowerDBus:
>> Added UPower.Device '/org/freedesktop/UPower/devices/ups_hiddev0'
>> Oct 25 19:00:23 mythbuntu mythpreviewgen[57623]: mythpreviewgen[57623]:
>> I CoreContext mythpower.cpp:348 (PowerLevelChanged) Power: On AC power
>> Oct 25 19:00:23 mythbuntu mythpreviewgen[57623]: mythpreviewgen[57623]:
>> I CoreContext mythpower.cpp:131 (Init) Power: Supported actions: None
>> /Oct 25 19:00:23 mythbuntu mythpreviewgen[57623]: mythpreviewgen[57623]:
>> E CoreContext main.cpp:77 (preview_helper) Setting priority failed.//
>> //eno: Permission denied (13)/
>>
>> However this system has recorded gigabytes of programs while these
>> errors continue to accumulate.
>>
>> Not sure what they mean.
>>
>> Yesterday I always had a couple of football games being recorded but it
>> wasn't until 7PM with the start of 2 new recordings that I had a problem
>> of nothing being written to a file.
>>
>> The only thing new yesterday was frontend related. I just built a new
>> x86_64 frontend with an Nvidia GT1030 gfx card on Archlinux KDE Plasma.
>> When I built mythtv I only configured the frontend and it worked fine.
>> However it was v0.31-118 and my backend is on Ubuntu is
>> v0.31-202010122044. Both the most current v31 releases. I was using this
>> frontend to view all recordings yesterday.
>>
>> My backend was built about as standard as you could get from an Ubuntu
>> point of view, nothing weird.
>>
>> It's what I've done before and has been recording fine since July when I
>> did the most recent complete rebuild. FWIW, I documented it here:
>> https://mythtvinstall.blogspot.com/2020/07/combined-mythtv-v31-media-system-and.html
>>
>> I checked this morning and all my recordings since the reboot around
>> 7:30pm last night have been fine.
>>
>> Jim A
> 
> I do not think those permissions messages are a real problem.  My
> reading of them is that you are probably running mythbackend as
> non-root user, so it does not have the right permissions to send power
> control commands or to set program priorities.  So I think those are
> red herrings.
> 
> Using a slightly older version of mythfrontend should not be any
> problem - all the protocols used to talk between MythTV programs are
> only supposed to be changed with a major version, and they all have
> protocol version information anyway.
> 
> There is not much detail in the log about the recording process, so it
> is very difficult to tell what happened.  I would recommend adding the
> "-v record" option to the mythbackend command line to get it to log
> about the recording process in future.

This was the weekend when clocks in the UK were put back by an hour. 
Could somthing similar be responsible for this failure?



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