Taking the boot drive out of the 2012 cMP and putting it in the 2010 cMP does NOT enable the 2010 to boot via DP1.2 - it hangs as before. This same process did not have the same effect on the 2010 machines.
#4k graphics card for mac pro 5.1 upgrade#
The ability to Boot into (DP 1.2) happened on the 2012 machine as a consequence of applying the Sierra upgrade over a Yosemite setup. just for completeness, all the MSI cards have had the R17 resistor removed, report correctly in the System Info, and show as 5.0Gt/s) I'm now 'stumped', but if any knowledgable soul out there has any ideas why this 2012 Mac Pro is doing what it supposedly shouldn't be able to do (from what I've read on this site) and why or how its different from a 2010 models I would LOVE to hear from you !īest Regards, and thanks for all the help on this site. The implication is that there IS something different about a 2012 Mac Pro, but from everything I know, have checked / researched. whereas the two supposedly identical 2010 Mac pros won't do that.
#4k graphics card for mac pro 5.1 trial#
after 2 weeks of endless searching / trial / error I still have three Mac Pros that happily boot, with boot screens to (DP 1.1 set), BUT a 2012 Mac Pro that also WILL also happily boot up straight into (DP 1.2 set on monitor) with the normal boot screens. Have checked the contents of the NVRAM but can find no obvious differences. so there must be 'some' slight difference? but have determined that the '2012' tag derives from the backplane board and not the processor tray. The only components NOT swapped from the 2012 machine are the backplane and the case! I note anyway that the Apple part number for the backplane board is the same for the 2010 / 2012 machines. None of this makes the 2010 machines boot into from 'cold' !. drive(s) with System / video card / processor board / RAM / etc ). In an attempt to find out why, I have systematically swapped almost all the components from the 2012 machine into a 2010 ( i.e. at this point I discover that the 2012 machine just happily boots, with boot screen, straight into with the screen set at DP 1.2, waking the screen up as it starts i.e. once booted) to DP 1.2 results in a display of 3840 x 2160 three WILL boot into set to DP 1.2), IF I don't turn the monitor on until just after the chime. Manually switching the monitor at this stage (i.e.
Upgrading the System to Sierra resulted in all 3 booting WITH boot screen showing ( monitor on DP1.1) to a 3840 x 2160 30Hz screen With monitor set to DP 1.2 all would 'hang' shortly after the chime - 'stuck' on a plain white screen, and require a reboot. Initially, running Yosemite, all 3 would boot, WITH boot screen, Monitor set to DP 1,1 to a Res of 3200 x 1800 (30Hz) Testing has been with a new iiYama 4K screen (SST) via a mDP to DP cable ( good quality cables). I have three essentially identical Mac Pro 5,1 machines - two are 'tagged' as 2010 machines and one as a 2012.Īll have been upgraded to twin Hex core processors ( 2 x 3.06Ghz ) with 48Gb RAM and a Fusion Drive (250 SSD + 1Tb HDD).Īll 3 have been fitted with identical MSI R9 280X Twin Frozr Gamer cards - all flashed with the switch in the 'Classic Bios' position using a ROM (MSIR9280X) found on this site. ( sorry its a bit wordy but felt it was important to convey the detail here). I'd like to share the following with you in case someone can explain this 'anomaly' which I've spent nearly 3 weeks trying to resolve without success. This is my first post here and I'd like to thank people for the helpful information I've found on this site.
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