[mythtvnz] Display problems after Amp & Mythbuntu upgrade

[cmacneill at snap.net.nz]

Hi,

I've been having intermittent problems for sometime with my TV going 
black on playback of offair recordings. Initally the problem would cause 
TV to blank out for 2 or 3 minutes at a time and after a reboot of the 
PC the recording playback would be fine.

Original setup was Mythbuntu with Ubuntu 12.04, MythTV 0.26 and 
proprietary Nvidia drivers from 14 months or so ago.

I recently replaced the old Marantz Amp with a Denon one and whilst it 
didb't entirely solve the display blanking problem, it reduced to only a 
few seconds at a time which was easier to live with.

I started have increasing problems with Ubuntu reporting varios crashes 
and when my remote stopped working I decided it was time to upgrade 
things.

I upgraded to Ubuntu 14.04 and MythTV 0.27-5 using the packaged Nvidia 
drivers. This solved the problems with my remote and seems to have 
stopped the intermittent blanking out, but now I have a new problem. 
When I turn the TV off at night, the next time I use it I have to reboot 
the PC before the TV will display anything at all. If I VNC to the PC, 
the display through there is fine, so I suspect a hardware or driver 
issue with my Nvidia GT660.

I have also tried the newest proprietary Nvidia drivers v352, packaged 
version is v340.

Anyone had similar problems with Nvidia cards? Did you solve them? What 
Nvidia cards are people using successfully, my problem may be isolated 
to my model?

Any help appriciated.

Regrards

Chris Macneill