[mythtv-users] long delays responding to keystrokes and ir events

Darren Hart darren at dvhart.com
Wed Dec 31 21:00:37 UTC 2008

On Wed, Dec 31, 2008 at 12:34 PM, Michael T. Dean
<mtdean at thirdcontact.com> wrote:
> On 12/31/2008 01:42 PM, Darren Hart wrote:
>> I've built a new HD myth system using an HDHomeRun tuner.  I notice
>> that after I start playing a video, a few seconds in Myth will stop
>> responding to keystrokes and IR events, it will ignore them for
>> upwards of a minute and then process them all at once (often escaping
>> all the way out to the "Really quit myth" screen b/c I pushed Esc so
>> many times :-).  After this happens once, it tends to go away for a
>> while and I can use the keyboard and/or remote just fine.  I first
>> thought this might be a lirc issue, but I changed from the audio_alsa
>> driver hack I was using to the udp driver for the hdhomerun and
>> recently noticed Myth even ignores the keyboard, not just the remote.
>> I'm running Myth 0.21 on Ubuntu Intrepid on a dual core AMD 4400 (2+
>> GHz) with 2 GB of RAM.  Recordings are on an esata drive, which
>> sometimes takes a few seconds to spin up, but playback is smooth.
>> While playing back HD streams I notice that the top show 150% total
>> CPU usage (out of 200% given two CPUs) - Nvidia 8200 so no XvMC...
>> can't wait for VDPAU!.  I tried running lirc as a SCHED_FIFO 50
>> process, but that doesn't help (which isn't surprising now that I know
>> the keyboard is also ignored).  So is there posisbly some problem with
>> Myth not processing its event loop? (assuming it has such a thing :-)
>> Any suggestions on what I might do to understand this and fix it would
>> be much appreciated. WAF--
> I'm thinking you just need to upgrade to MythTV 0.21-fixes r19222 or
> higher.  IIRC, there is/was an issue with the US repo that has prevented
> the weekly builds from going up since the issue that's most likely
> causing the problem was fixed.  So, my recommendation is to check with:
> mythbackend --version
> and if it doesn't say something like:
> Please include all output in bug reports.
> MythTV Version   : 19222


MythTV Version   : 18722

> MythTV Branch    : branches/release-0-21-fixes

MythTV Branch    : branches/release-0-21-fixes

That part at least looks right.

> where "MythTV Version: 19222" (or higher than 19222) is the important
> part, head over to the MythBuntu forums or #ubuntu-mythtv on freenode to
> ask for help in getting the newer version (as I think the updates are
> going to other repos).

Will do, thanks!  I'll report my success/failure as soon as I'm able.


Darren Hart

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