HELP Please. Macpro 2,1 EL Capitan gpu issues
hello, appreciate if can me problem(s) iam facing mac pro 1,1 (upgraded 2,1). ** sorry long post, greatlt appreciate feedback. thankyou*
received mac pro 1,1 friend mine 10.7, nvidia 7300 gt , around 5 gb of ram. decided mac project system , make run newer operating system. have admit iam still new in world of macs, iam been trying learn along way. upgraded unit 2 xeon x5365 , upgraded 32 gb of ram. decided upgraded gpu xfx 5770 hd-577a-znfc pc card. knew cards theres no boot screen, waited long time , no screen showed up. connected dvi- hdmi connection , hdmi , no signal. tv pick ports being used no signal. decided flash card have mac bios, installed , boot screen , loaded 10.7. flickering screen/black bars few seconds before login screen , after login screen. had tested card on old pc , worked, dont think card hope. after researching, decided upgraded el capitan. after installing el capitan , changing boot.efi, see loading apple loading screen, bar stops half way , stays that. tried reinstalling el capitan several times , same issue. got tired, , decided connect 7300 see if happens, loaded whole bar. however, doing same flickering/black bars second before , after login screen. notice launch pad lags alot , when put video in full screen. suppose in fullscreen lags, because looks fine in desktop. tried using power color hd 7750 7300 , see boot screen 7300, bars stays stuck in middle 7750. sorry, made post in hurry can answer questions. upload diagnostic files found.
attached files:
hey -
don't have fix you...just wanted in uncharted waters vast majority of mac users. few going flashing , installing non-mac gpus. because small percentage of macs can swap gpus (imacs, laptops, etc.), because mac pro users professionals have work do, , want computer project.
having said that, have done flashed cards, has been decade, no real help. has been tricky, , caveats, such having boot screen glitches , not waking sleep. point is....unless run across specific card specific model machine, flashed right rom, can dicey. having 2 gpus may increase variables.
luck, post if figure out. else may want go same route.
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