Q: When will we expect the AMD Radeon HD 6770M driver

well, I know it's not much, but whether or not a "non Mac" video card works or is supported depends on Apple including that in their OS, and they aren't talking.  The best you're going to get is it "may" work or not. you won't get a boot screen until the video driver has loaded, so, should your Mac pro have any problems, diagnosing them would be harder. Your best bet would be to either find a video card that has Mac support or get the card you have flashed so that it will support Macs.  I don't know what os you are running, Mavericks, Yosemite, Snow Leopard, El Capitan or sierra, so I can only give you general advice. Also, maybe use a can of duster to clean out the video card of dust, because it sounds to me like it's not doing that well, as a last resort you could try baking it, but the details I'll leave for you to discover.

John B

Apple don't write the drivers for 3rd party video cards, you should ask AMD

The AMD HD 6770M is a version of the AMD HD 6770 intended to be integrated in to a computer logic board by the computer manufacturer, as such it would only be used in a laptop or an all-in-one computer like the iMac. It is therefore impossible that you have one of these in a classic Mac Pro which only uses PCIe card based video cards, i.e. the AMD HD 6770. The 'M' at the end can be considered to refer to 'mobile' as in laptop.

I will therefore assume you actually have an AMD HD 6770. (Without the M.)

This is what the AMD HD 6770 would look like - http://www.amd.com/en-gb/products/graphics/desktop/6000/6770

This is what the AMD HD 6770M would look like - https://www.techpowerup.com/gpudb/2254/radeon-hd-6770m-mac-edition

Note: The 6770 and 6770M are in computer terms ancient designs since they date from 2011.

Apple has used the 6770M in a MacBook Pro dating also from 2011 and also an iMac again dating from 2011. The MacBook Pro with this 6770M chip had a known design fault that resulted in Apple offering a free warranty repair extension program for this issue. See - http://www.apple.com/support/macbookpro-videoissues/

The 6770 (without the M) was as far as I am aware never sold as an official Mac edition. This means it did not have Mac firmware meaning it would not display anything before the Mac finished booting. The 6770M as used in the MacBook Pro and iMac obviously did have Mac firmware.

The drivers for any and all AMD cards are not written by AMD but are instead written by Apple. The only updates - if there are any would come with a newer version of OS X. You cannot download drivers for the Mac from AMD.

If you have a PCIe version in a Mac Pro and not the MacBook Pro I suggest either your cards fan might need cleaning, or the heatsink compound for the main video chip on the card might need replacing since your issue sounds similar to overheating type problems. You could consider getting a newer (in relative terms) card e.g. the HD 7950 or since you are using Adobe software you would in fact be far better off with an Nvidia card instead.

You are not addressing Apple here, we are all just users like yourself.

You may have this problem

http://www.apple.com/support/macbookpro-videoissues/

Make an appointment at the Genius Bar of an Apple store.

  Apple Retail Store - Genius Bar

https://www.apple.com/retail/geniusbar/  

amitsrivastava wrote:

 

I have AMD Radeon HD 6770M from MacBook Pro, given by Mac, only.

I had the problem with graphics card, when it is in warranty and in 3 years full coverage duration, but now when it

get hanged frequently, then I tried to found the solution and came to know that the graphics card is not in use.

It is given to me by Mac iStore only. They can look at it in the replaced part of my laptop by serial number.

 

They should provide either the driver or free replacement with to and fro shipping or courier charges for my laptop

I want that some apple support person can reply to me. or call me.

As Illaass says in his reply and as I included in my previous reply there has been a known problem with the HD 6770M as used in the MacBook Pro. Due to this Apple are providing free repairs to fix this issue.

As Illaass said you need to contact Apple or an official Apple reseller to get it repaired in this special extended warranty repair program. This is easiest if you can visit an official Apple Store.

We are mere Apple customers ourselves we are not Apple employees so we cannot do this for you.