On 05/31/2016 09:17 AM, Denniston, Todd A CIV NAVSURFWARCENDIV Crane wrote:
> Curiously my intel 845-G has had gl applications (freecad and wine
> based windows games) STARTED working correctly with this update.
>
> I see in a latter email that you have a) found a path issue for users
> vs root, and b) you are using nvidia. This reminded me of an issue I
> was having with some GL code I use (jogamp based) and nvidia drivers
> a little over a month ago, this might be something else you want to
> be aware of.
>
> Nvidia is in the process of making a Vendor-Neutral GL[0], which I
> think is probably a good thing, but they have found that "several
> applications relied on behaviors or attributes of the NVIDIA OpenGL
> driver that fall outside of the Linux OpenGL ABI"[1]. Once I figured
> out it was kmod-nvidia related, this[2] post helped me figure out the
> mapping to the other links. for now I have had to stick our nvidia
> machines at 352.79 until either we get our app working with the
> GLVND API, or elrepo packages a non-GLVND config[1].
>
>
> [0] https://github.com/NVIDIA/libglvnd [1]
> https://devtalk.nvidia.com/default/topic/915640/unix-graphics-announcements-and-news/multiple-glx-client-libraries-in-the-nvidia-linux-driver-installer-package/
>
> [2] https://www.centos.org/forums/viewtopic.php?f=14&t=57047
>
> Even when this disclaimer is not here: I am not a contracting
> officer. I do not have authority to make or modify the terms of any
> contract.
>
> ________________________________________ From: isdtor
> [isdtor@xxxxxxxxx] Sent: Tuesday, May 31, 2016 7:09 AM To: CentOS
> mailing list Subject: CenOS 6.8 and libGL failures
>
> Ever since I upgraded to CentOS 6.8, some software has stopped
> working alogether. This is related to OpenGL/mesa and can be
> demonstrated with glxgears:
>
> $ glxgears libGL error: No matching fbConfigs or visuals found libGL
> error: failed to load driver: swrast X Error of failed request:
> BadValue (integer parameter out of range for operation) Major opcode
> of failed request: 154 (GLX) Minor opcode of failed request: 3
> (X_GLXCreateContext) Value in failed request: 0x0 Serial number of
> failed request: 33 Current serial number in output stream: 35 $
>
> This appears to be a common problem, but I found no solutions that
> apply here since I believe everything is installed and set up
> correctly. It all worked with CentOS 6.x, x<8.
>
> https://www.centos.org/forums/viewtopic.php?t=56273
> https://ask.fedoraproject.org/en/question/38116/issues-with-libgl-on-fedora-20-unable-to-load-driver-swrast/
>
There is yet another issue with nvidia drivers and indirect GLX, which
will generate almost the same error message. Indirect GLX was disabled
by default in Xorg 1.17, which was introduced in Centos 7.2 and 6.8.
This problem only happens if you run the GL application remotely and
display on nvidia driver enabled screen. It's not clear from the OP
if that is the case here.
The solution would be to add +iglx to Xorg command line, but gdm is
hardcoding the Xorg parameters, so if you use gdm/gnome you are out
of luck.
https://elrepo.org/bugs/bug_view_advanced_page.php?bug_id=610
https://bugzilla.redhat.com/show_bug.cgi?id=1336014
-Thomas
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