[mythtv-users] nvidia driver woes

[Patrick Ouellette]

On Fri, Sep 20, 2013 at 10:43:53AM -0700, John Finlay wrote:
> >On Wed, Sep 18, 2013 at 11:31 PM, John Finlay <finlay at moeraki.com> wrote:
> >>I used to have an old analog tv on one of my myth frontends which drove it
> >>via the nvidia driver tv out (svideo). I upgraded to a new flat panel but I
> >>can't get x to start on the system. I finally gave up and did a new install
> >>of mythbuntu but as soon as I did the updates the nvidia 304 driver was
> >>installed and now X won't start again. It almost seems as if the nvidia card
> >>is stuck on tv out as it's primary connection. The xorg log errors are:
> >>
> >>[    10.004] (II) NVIDIA(0): Creating default Display subsection in Screen
> >>section
> >>         "Default Screen" for depth/fbbpp 24/32
> >>[    10.004] (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
> >>[    10.004] (==) NVIDIA(0): RGB weight 888
> >>[    10.004] (==) NVIDIA(0): Default visual is TrueColor
> >>[    10.004] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
> >>[    10.004] (**) NVIDIA(0): Option "NoLogo" "True"
> >>[    10.004] (**) NVIDIA(0): Option "DPI" "100x100"
> >>[    10.004] (**) NVIDIA(0): Enabling RENDER acceleration
> >>[    10.213] (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module!
> >>Please ensure
> >>[    10.213] (EE) NVIDIA(0):     that there is a supported NVIDIA GPU in
> >>this system, and
> >>[    10.213] (EE) NVIDIA(0):     that the NVIDIA device files have been
> >>created properly.
> >>[    10.213] (EE) NVIDIA(0):     Please consult the NVIDIA README for
> >>details.
> >>[    10.213] (EE) NVIDIA(0):  *** Aborting ***
> >>[    10.213] (II) UnloadModule: "nvidia"
> >>[    10.213] (II) Unloading nvidia
> >>[    10.213] (II) UnloadModule: "wfb"
> >>[    10.213] (II) Unloading wfb
> >>[    10.213] (II) UnloadModule: "fb"
> >>[    10.213] (II) Unloading fb
> >>[    10.213] (EE) Screen(s) found, but none have a usable configuration.
> >>[    10.213]
> >>
> >>
> >>If I switch to an alternate tty and manually startx all seems to go
> >>correctly. Before using this same system with the analog tv I used it with
> >>the same flat panel without a problem. I speculate that when I started to
> >>use tv out something was changed that now prevents proper use with tv out
> >>disabled. Is that possible?
> >You did disconnect the sVideo cable right?  IIRC, the cards will
> >default to sVideo if it senses the cable connected.
> >
> 
> Yes and I also disabled TV out in the BIOS. I'm giving up on this
> and buying an add in card in the hope that that will be properly
> handled by mythbuntu.
> 

Check to be sure you don't have multiple versions of the NVIDIA kernel module
hanging around.  If there is a version mismatch between what the module is and
the X drivers expect you can see strange things like this.

Pat