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

[B.J. McClure]

On 11/13/2013 06:03 PM, B.J. McClure wrote:
> 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.
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>
Replying to my own post again. ;-/

I disabled compiz settings in System>Preferences>Desktop Effects 
followed by Ctrl-Alt-Backspace.  Then went back to 
System>Preferences>Desktop Effects, reselected compiz and wobbly windows 
as well as windows on a cube and everything works again.  Guess I will 
call this solved and wait for the next episode.

B.J.