[mythtv-users] Nvidia Upgrade Agony

Saul jaglover at gmail.com
Sun Dec 28 21:54:09 UTC 2014


On Sun, 28 Dec 2014 16:08:35 -0500
Larry Kennedy <lunchtimelarry at gmail.com> wrote:

> I'm running myth 0.26.1-296 on EL6 (2.6.32-431.el6.i686) with a GT210
> card and the nvidia 319.32 driver.
> 
> About a week ago, I accidentally took an update to my Xorg server
> (now I have xorg-x11-server-Xorg-1.15.0-25.el6.centos.i686), and
> after that I started getting a driver mismatch error (ABI 15 I seem
> to recall).  Anyway, I've seen this before, and I believe this means
> the nvidia 319 driver is at a lower version than is needed, so I
> figured all I need is an nvidia upgrade. If I remember right, the
> driver from atrpms was still far enough behind to cause the ABI 15
> error, so I tried kmod-nvidia from elrepo. After removing the old
> nvidia 319 driver, this update pulled in these nvidia libraries:
> 
> nvidia-x11-drv-340.65-1.el6.elrepo.i686
> kmod-nvidia-340.65-1.el6.elrepo.i686
> 
> There is no nvidia kmdl rpm installed now (as was the case before),
> so I am not sure if this is a problem or not.  When I start the
> desktop, everything seems fine, and apps like Mozilla work, but none
> of the myth GUIs will start.  I get a segmentation fault with both
> the mythfrontend and mythtv-setup. Even with --verbose, mythfrontend
> gives me nothing to work with.
> 
> As a test, I also tried doing the nvidia upgrade using scrpms.  With
> this upgrade, I was forced to move up to
> kernel-2.6.32-504.3.3.el6.i686, so at least I know this update is
> pulling in an nvidia-kmdl, unlike kmod.  In the end, this upgrade
> attempt was less successful than the kmod upgrade in that the nvidia
> driver is never able to load, so the desktop never starts. At the
> bottom of Xorg.0.log it shows this:
> 
> [    20.723] (II) LoadModule: "nvidia"
> [    20.723] (WW) Warning, couldn't open module nvidia
> [    20.723] (II) UnloadModule: "nvidia"
> [    20.723] (II) Unloading nvidia
> [    20.723] (EE) Failed to load module "nvidia" (module does not
> exist, 0) [    20.723] (EE) No drivers available.
> [    20.723] (EE) Fatal server error:
> [    20.723] (EE) no screens found(EE)
> [    20.723] (EE) Please consult the CentOS support at
> http://wiki.centos.org/Documentation
> 
> This seems odd since "modprobe nvidia" succeeds.  I tried
> nvidia-xconfig to recreate the xorg.conf, but no go. Of course I am
> rebooting every time to get a clean start.  After many attempts, it
> looks like kmod-nvidia 340.65 may be my best option.
> 
> Is anyone aware of an issue with mythtv 0.26 and the nvidia 340.xx
> driver? Alternatively, if anyone has ideas on how to get the scrpms
> nvidia driver to work, I am open to trying that again too.
> 
> I have options, but nothing looks good.  Downgrading Xorg seems
> problematic, so I didn't go there. I suppose I could upgrade myth to
> version 0.27 and see what happens, but that presents some difficulty
> on EL6 (although I know that scrpms has compiled both myth 0.27 and
> the compatible version of Qt). It also triggers multiple myth
> upgrades for BE-FE compatibility. Another option is to go to EL7, but
> that requires a decent effort too since there is no good
> upgrade-in-place from EL6 32-bit to EL7).
> 
> I apologize in advance if this post is somewhat schizophrenic.  I can
> provide more details if anyone can lend a hand.

Check out if your new driver supports your card. Times of widely
advertised unified nVidia drivers are over.

-- 
Cheers, Saul


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