[mythtv-users] System hangs occasionally -- more memory didn't solve the problem

[John Finlay]

On 11/24/2014 5:17 AM, Michael T. Dean wrote:
> On 11/23/2014 11:42 PM, Hika van den Hoven wrote:
>> Sunday, November 23, 2014, 11:52:15 PM, you wrote:
>>> On 11/23/2014 4:00 PM, Dick Steffens wrote:
>>>> If the problem could be related to the frontend running a long time
>>>> without doing anything, I'll try shutting down the front end when not
>>>> watching the TV and see if that changes anything. I generally just
>>>> exit back to the main menu of the front end when finished watching for
>>>> the evening.
>>>>
>>> For me it happened because the FE went into standby mode when using the
>>> mythbuntu theme. To test it I set the standby mode to kick in after a
>>> minute and then started a recording on the BE after the FE was in
>>> standby mode; top showed the FE CPU usage increasing from 2% to 20%.
>> Are you using opengl for your frontend? I've vague idea that switching
>> to qt might solve it.
>
> If it does (and I'm not saying I doubt it does--this would make 
> perfect sense), it just means that the problem is your video drivers 
> failing to re-initialize properly after standby--at which point you 
> may need to do something such as restart X or even stop X/unload video 
> driver/reload video driver in your wakeup script. And if it doesn't, 
> I'd suspect some other driver problems (maybe one that's easier to 
> unload/reload on wake).
>
> Oh, and if switching to Qt paint engine "solves" the problem (really, 
> just avoids it), you probably still want to fix the problem since the 
> OpenGL paint engine is better and better tested than the Qt engine.  
> You will have some issues, especially with certain themes, if you use 
> the Qt paint engine.
>

The problem seems to be theme related as using a different theme (mythtv 
theme I think) other than Mythbuntu doesn't exhibit the same problem.

John