[mythtv-users] nVidia driver 304.88: problems

[HP-mini]

On Mon, 2013-04-15 at 09:36 +1000, Jean-Yves Avenard wrote:
> Hi there.
> 
> 
> I did an update to my ubuntu 12.04LTS box yesterday. Small update...
> 
> While it's usual for major ubuntu upgrade to break stuff (but that's
> another topic)
> 
> 
> It upgraded nvidia drivers from  295.40 to 304.88 ; which was quite
> surprising as usually it never do such a big steps in LTS release.
> 
> Anyhow: it is very broken.
> 
> This is on my main backend, which is also used as a frontend in my
> cinema room (plugged to a cinema projector)
> 
> 
> As soon as I turn off the projector, when I turn it back on I get no
> signal from the PC. I must then restart X / Window manager to get
> video signal going.
> 
> Interestingly, if from the command line I start a VDPAU playback,
> signal comes back again (sometimes, not always), without having to
> restart X.
> 
> 
> Reverting back to 295.40 fixes all issues and for now, I've locked
> that version
> 
> 
> my xorg.conf hasn't changed much in years. I use the CustomEDID
> command so I can boot the PC even if the projector is off.
> 
> 
> Anyone has experienced similar issues with 304.88?
> 
> I'd like to find the problem with those drivers because sooner or
> later, I would have no choice but upgrade :(
> 

see Appendix B (& C) driver readme:

I recent unpinned 295 & upgraded to 304..
I use custom modelines & 1 display without EDID (DDC).

The upgrade caused both connected monitors to have no EDID & run at
800x600.

The changes (that I) required in xorg.conf were w.r.t. mode validation
options & their scope.

Option "UseEDID" "false"
- this is now global & not applied only to the section it is placed.
- this option is not recommended.

There are more finely controlled mode validation keywords..& these
keywords accept a extra prefix qualifier (port).

Option "ModeValidation" "DFP-0: NoMaxPClkCheck; CRT-1: NoVesaModes"

I added a prefix qualifier to option "UseEDID" "CRT-0: false" without
any reported error. It is possble this is ignored.
I have other Option "ModeValidation" keywords.

Other useful keywords:
Option "ConnectedMonitor" "CRT"

blm.