[elrepo] Update to kmod-nvidia-331.20-1.el6.elrepo.x86_64 breaks 3D support

[B.J. McClure]

On 11/13/2013 05:49 PM, Phil Perry wrote:
> On 13/11/13 22:38, B.J. McClure wrote:
>> On 11/13/2013 05:21 PM, B.J. McClure wrote:
>>> My home office workstation with fully updated CentOS 6.4 and dual
>>> monitors has been working well with kmod-nvidia for a few years. The
>>> recent update to the subject driver broke 3D support according to the
>>> error message I get when I try to reconfigure desktop effects from the
>>> GUI.  Previously working desktop effects failed to work as soon as the
>>> new driver loaded.
>>>
>>> [bmcclure at office2 ~]$ sudo nvidia-detect
>>> Probing for supported NVIDIA devices...
>>> [10de:1040] NVIDIA Corporation GF119 [GeForce GT 520]
>>> This device requires the current 331.20 NVIDIA driver kmod-nvidia
>>> [bmcclure at office2 ~]$ rpm -q kmod-nvidia
>>> kmod-nvidia-331.20-1.el6.elrepo.x86_64
>>>
>>> [bmcclure at office2 ~]$ rpm -qa | grep nvidia
>>> nvidia-detect-331.20-1.el6.elrepo.x86_64
>>> nvidia-x11-drv-331.20-1.el6.elrepo.x86_64
>>> kmod-nvidia-331.20-1.el6.elrepo.x86_64
>>>
>>> [bmcclure at office2 ~]$ lspci | grep VGA
>>> 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce
>>> GT 520] (rev a1)
>>>
>>> Is this a known bug?  If necessary, I can always downgrade to previous
>>> driver or compile from source.
>>>
>>> Any hints appreciated.
>>>
>>> Cheers,
>>> B.J.
>>>
>> Replying to my own post, looking at /var/log/Xorg.0.log shows glx module
>> is not loading and the sim link to
>> /usr/lib64/xorg/modules/extensions/nvidia/libglx.so.331-20 is broken.
>> Repairing the symlink should fix it.
>
>
> Strange, you are the second person to report this.
>
> http://elrepo.org/bugs/view.php?id=425
>
> I am unable to replicate the issue - the symlink is fine on my system 
> after updating.
>
> $ ll /usr/lib64/xorg/modules/extensions/nvidia/
> total 9588
> lrwxrwxrwx. 1 root root 16 Nov 8 16:18 libglx.so -> libglx.so.331.20
> -rwxr-xr-x. 1 root root 9815912 Nov 8 15:52 libglx.so.331.20
>
> Did you reboot after updating the nvidia drivers? That was the cause 
> of the issue for the previous report.
>
> Phil
>
>
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Yes, I did reboot and now I have fixed the broken symlink and the 
libglx.so.331.20 module now loads.  The GUI now shows compiz thinks 
there is 3D support but there are none of the wobbly windows or cube 
effects working.

In var/log/Xorg.0.log I see some error messages that appear to say the 
monitors do not support "Nvidia 3D stereo".  Not sure exactly what it is 
trying to tell me but the monitors functioned well with 3D and previous 
kmod-nvidea-325.15.

B.J.