Should have tried this while the card was still in there. I am back to the 780. maybe worth to try before uninstalling the Nvidia driver?
THANK you for your information 88409!!! I appreciate it very much!
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just learning how to post in a forum!! sorry: here's the missing part:
- How are you powering the card?
I ordered a new dual mini 6 pin to 8 pin cable: seems to be working: fans are both running upon startup?
- Do you have FileVault enabled? FileVault is not compatible with cards that do not show the boot screen.
I do not use this.
- Did you uninstall the NVIDIA web driver prior to dropping in the 580?
No I did not, because I wanted t be sure to be able to go back to the 780 just in case.
here's the q: the Nvidia driver is set to macdriver - I had to go through some terminal uninstall of the startup of the Nvidia driver so it would NOT go to the web driver and I thought that should be ok with the 580, but maybe I need to uninstall the Nvidia driver completely? Just wondering: If that does not work - how can I go back to using the 780? I might end up with NO WAY of having a monitor and would not know how to make it work?
maybe I should create a second startup disk with just no Nvidia drivers and boot from there?
Also wondering: is there any way to tell I have a faulty card?
AFAIK, High Sierra support all 780 (regardless Rev A or B) natively. No web driver required.