Red Hat Bugzilla – Bug 1270532
Add support for GL_EXT_x11_sync_object
Last modified: 2015-10-14 08:27:07 EDT
Description of problem:
This problem is only reproducible when using the proprietary NVIDIA drivers and OpenGL rendering. It is especially apparent when using Firefox and other accelerated applications.
The problem is resolved by applying the following patches, in order as they appear, to mutter and bumping the release. I successfully did this with the RHEL 7.2 beta.
These commits landed in the mutter 3.14 branch on 2015-08-13 in response to a severe issue with rendering discussed here:
The issue essentially causes redraws to only complete partially. From what I saw this was due to a race condition caused by using proprietary drivers where XSync is not sufficient enough. The proprietary drivers are necessary when using Quadro graphics cards or CUDA.
The only workaround is to force clutter into continuous redrawing which is far from ideal.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install recent version of the NVIDIA graphics drivers for Linux.
3. Open a decent amount of tabs in Firefox and browse casually.
Partial redraws causing flashes and other graphical artifacts.
Properly redrawn graphics.
This should be included in mutter versions >= 3.14.4-11
*** This bug has been marked as a duplicate of bug 1258842 ***