10.6.4 fix....maybe?
guy on insanelymac got 4870 fixed on Hack....anyone with buggered 4870 want to try?
http://www.insanelymac.com/forum/index.php?s=&showtopic=221575&view=findpost&p=1492696
I hope that these troubles don't put too much of a stain on GPU flashing. The ONLY cards with issues are 48xx series. The reason? it's that damn MDP port !!! Since the ONLY Apple EFI and drivers were written to accommodate MDP port the original issue was NO Dual Link on upper port. This made sense as Apple's MDP port only outputs Dual Link when it is connected to a $100 adapter that sends it's own edid into mix and sorts the Dual Link output. Since we have never found a 48xx series card with exact same function, ALL of the 48xx cards have had some compromise. At first it was just lack of Dual Link on upper port. Then we found some cards could not run 2 @ DVI ports at once.
Lord Apple gave us a fix in 10.6 and tooketh away in 10.6.3.
If Apple KEEPS UPDATING kexts the same way, it is going to be harder and harder to keep ptching 10.6.2 kexts to fit in as rest of ATI kexts keep getting newer.
I think it may be time to start a new thread with pix of 4870 cards that still work in 10.6.4. just like they did in 10.6.2. I am hopeful that there still are some.
But again, note that these software updates have had
no effect whatsover on flashed cards that have identical layout to Apple OEM cards. Thus, the LARGE number of people with flashed 8800GT cards have not reported any issues or weirdness. This is because the flashed cards are 100% identical in terms of function to the OEM. The flashed GTX285 cards are also 100% identical to Apple OEM, and they have been also exempt from any trouble with OS updates.
The few people with flashed 3870 and 2600 cards have also not reported a single issue, again because flashed cards have nearly identical layout to OEM. Nor have we heard complaints from owners of flashed Quadros. All of the other flashed Mac Pro cards have escaped this fate. All of this trouble has come from flashed 4870 cards using Dul DVI ports instead of DVI & MDP.
Keep in mind that MDP port is considered a "protected" output. As in WHEN BluRay comes out on Macs, our flashed 48xx cards will likely have issues with outputting HD content over that missing MDP port.
The 4890 cards are now ESPECIALLY problematic because they have same MDP/DVI issue as 4870, with additional complication of having their Device ID not being written into Apple's kexts/drivers. So 4890 cards are double cursed at this time.
I am gong to dig out my XFX 4870 and test it in 10.6.4. If it still works s before I will start a "Flashed cards immune to 10.6.4" thread.
Perhaps there is a group of people laughing up in Cupertino. By tossing this little bit of trouble into the flashing waters they are getting many Nervous Nellies to just PAY the Apple Tax. Fact is, IT IS ONLY CERTAIN FLASHED 4870s and ALL of the flashed 4890s that are having issues. Rest of flashed card universe is unaffected by these issues.
I am going to test the 4870 or 2 I have here and report in new "Immune to 10.6.3/4" thread. Lets figure out which cards are most compatible and won't require magic tricks from our beleagured (and BUSY) geniuses with each update of the OS. Who has a flashed 4870/512 of the reference design? These are the cards with large red fan like the Apple one. I have a feeling those are working fine in 10.6.4, with Dual DVI, etc.