[pshepherd]

I am running Krypton 17.3 and have recently noticed a problem watching .mpg files recorded using MythTV running on a separate system.

I have been running xbmc/kodi on this h/w for many years playing back these types of files without a problem. I haven't changed any s/w or h/w recently other than stepping up from 17.2 to 17.3 and installing kodi-inputstream-adaptive.

The problem is intermittent and has occurred with several recordings - the picture begins to stutter and miss frames, the audio plays fine. Stopping and restarting playback sometimes fixes the problem.

A debug log is here http://paste.ubuntu.com/24923473/

Playback is fine initially then begins to stutter at 23:25 after a while I stop playback then restart at 23:38 and it plays fine to completion.

I hope the debug log has all necessary information, there are no addins configured and it's the std skin. If you require further info let me know.

Paul

[fritsch]

23:25:12.003 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 69
23:25:12.068 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 64
23:25:12.153 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 84
23:25:12.327 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 105
23:25:12.363 T:140211856049920 DEBUG: CVideoPlayerVideo::CalcDropRequirement - dropped pictures, lateframes: 2, Bufferlevel: 2, dropped: 1
23:25:12.427 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 63
23:25:12.460 T:140211856049920 DEBUG: CVideoPlayerVideo::CalcDropRequirement - dropped pictures, lateframes: 3, Bufferlevel: 3, dropped: 1
23:25:12.528 T:140211856049920 DEBUG: Previous line repeats 1 times.
23:25:12.528 T:140211856049920 DEBUG: CVDPAU:ecode long wait: 67

That looks like a driver issue. Your gpu needs more than 100 ms for decode a single surface.

[pshepherd]

The nvidia driver is 340.102 and has been for a while so it's strange the problem has recently appeared.

Do you have any suggestions how to narrow it down to possible causes or cure?

thanks, paul

[fritsch]

Can you try to start kodi from fluxbox? Install fluxbox, logout, choose fluxbox as session and start kodi from there?

[pshepherd]

I am using openbox+lightdm at the moment, I will try fluxbox and report back.

paul

[fritsch]

Nope, not needed then - I overlooked that. Then I have no further idea, sorry.

[pshepherd]

Thanks.

I reverted to 17.0 and was still getting the same problem. Then I noticed that during the skipping I was getting high CPU loads (50+%) and high CPU temperatures (~90C), initially I assumed the former was causing the later. However checking syslog it seems the kernel was reporting high cpu core temperatures and throttling the clock even when not playing content so I think I have cooling problem due to the recent high temperatures in the UK.

Thanks for your help fritsch.

paul