- Aug 23, 2015
- Asus ROG Z590-i Gaming
- RX 6900XT
- Mobile Phone
When install OS X the only flags that works with my system are nv_disable=1 and GraphicsEnabler=No with intel onboard GPU disabled in BIOS, other than that no chance to get to the installer, even after OS X and post install.. But when I do install the latest compatible NVIDIA driver I replace those two flags with one flag which is nvda_drv=1.For your issue it sounds like you had no gpu acceleration, like when using nv_disable=1. When you updated to 10.11.4 the older version of the nvidia driver stopped working until you updated it with the newer version for 10.11.4. I think that the web driver will set the argument nv_disable=1 when it sees a incompatible version of OS x after doing a update and that your gpu is not compatible with the OS x default drivers. The flag will disable all acceleration including cuda and opencl. Once the web driver is updated and matches the new version of OS x, acceleration is enabled again. If you had a AppleGraphicsDisplayPolicy related black screen issue and used nv_disable=1 to boot, then you disabled cuda and opencl with the flag. With nv_disable=1 the system uses a very basic graphics driver for minimal graphics functionality. It sounds like you solved your opencl issue by fixing the black screen issue, updating the nvidia drivers and reenabling acceleration.
The other user's issue sounds like it was related to buggy cuda drivers and/or application builds that were lagging in functionality for 10.11.4. It looks like his issues were solved by updating drivers and software for better compatibility with 10.11.4.
Note: after install the web driver it forces system to restart as it should, but when I click to restart I always get a warning message like (Corrupted System Preferences Restart), I cannot read details because it goes fast and dark when screen is ready to restart.
Besides, issues when using Smudge Tool and Blur Tool on Photoshop CC 2015 (screenshots provided).
I do this since Yosemite 10.10.5 (August 2015) and non of those issues was presented not even on the new 2016 Yosemite update... Only 10.11 any build any sys def.
Edit: New OS X 10.11.5 and NVIDIA updates solved this issue.