0
votes
0answers
28 views

Do Mac versions (Snow Leopard, Mountain Lion, etc.) have a built-in “framebuffer” in their kernels?

Assuming you try to install Snow Leopard on an x86 board that has no GPU or integrated graphics, but only a, say, CRTC or such, does it have support to plot data on the screen without depending on any ...
2
votes
2answers
3k views

Boot hangs on grey screen (even when booting from USB drive with fresh OS X install)

My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. The ...
5
votes
5answers
9k views

How to permanently disable (defective) graphics card in MacBook Pro?

My graphics card has malfunctioned and is preventing my MacBook Pro (2011) from booting. Based on my research I will have to otherwise have the logic board replaced. The defective ATI graphics card ...
0
votes
1answer
138 views

Mac Pro Dual Displays

I have a 2007 Mac Pro that shipped with 10.4.7, and an ATI Radeon X1900 XT graphics card. The card has two DVI outputs for a dual display setup. I recently updated my OSX to Snow Leopard and have ...
1
vote
2answers
677 views

Why do the new iMacs have mobile video cards?

I noticed that the new iMacs graphics cards are AMD Radeon HD 6970M. Why do the new iMacs have mobile video cards? What are the implications of those cards? Are those cards as powerful as dedicated ...
3
votes
3answers
6k views

What does no chime on boot mean?

My MacBook Pro is having some issues. It boots. But the graphics card doesn't get detected. You can remote in to it but looking at the Displays dialog in System Preferences, no graphics card is shown: ...