After flashing my EVGA GTX680 SC card with the Mac ROM, it is all working fine in OSX and in Bootcamp Windows 7. I have bootscreen, and full PCIe ver. 2.0 connections.
However, something is bugging me a little bit and that is during the boot sequence it seems like the display is VGA only. Is that normal?
I have attached three images showing the bootscreen. In "Boot #1" you can see the HUGE Apple icon on my ACD 27". In "Boot #2" you see the blue background, but it is showing with thick black bars on both sides. In "Boot #3# it changes to 2560x1440 when the login screen appears. The reason for the shadowed Apple icon is that this comes flying from the lower left corner up to the middle...
Is this normal behavior
Hi! Killerbob.
Pardon me for the language, not native english speaker.
I got more or less the same thing.
I fleshed EVGA GTX 680 (02G-P4-2680-KR), with rom file from
https://forums.macrumors.com/posts/17132316/ everything OK, but i got strange thing too.
When i use DVI, the boot-screen has right resolution, right size icons(right resolution), but mice pointer can move only vertically..
When i use DP, i got boot-screen too, but it has HUGE icons(wrong resolution), and mice pointer can move only vertically(see attachments).
I have Mac Pro 3.1 with OS X 10.8.3, EVGA GTX 680 (02G-P4-2680-KR) connected to Dell U2711(native resolution 2560x1440)
I already asked about that "strange huge boot-screen"
here but, unfortunately, got no sensible answer.
I already reflashed card twice, and reset SMC - no changes.