Ati Radeon 5770 Password Entry Prompt#

Loaded the ATI Catalyst Windows 7 Drivers for.An ongoing thread started by the same guy over at InsanelyMac:Suffice it to say that this is a confusing topic and there are many variables involved.The most important things are target OS and maybe also which particular 6850 you have.

After posting at discussions.apple.com, I was encouraged to run Apple Hardware Test to test for any hardware faults. Hi, IВ’ve been experiencing some fan spin-up issues on my Mac Pro 1,1 (late 2006 1st gen. From insanelymac suggests that maybe the 6850 still doesn't completely work OOB on ML.With more info we can take it from there.As for me I finally have my 6850 working as well as I want it to for now, if I get the chance I will try to test my other connectors HDMI and Displayport, VGA and DualLink output, and all the multiple monitor configurations. Having 3 working at once would be nice.

As everyone knows, after pressing the Mac's power button, a chime is heard. In preparation to diagnose my fan issue, I went ahead and 'flashed' the PRAM, and reset the System Management Controller (SMC) for good measure.I first noticed a change in the boot process after installing the 5770 graphics card. It has 6 GB of RAM - plenty for my purposes - and I run system maintenance routines weekly to correct permissions, etc. Recommended the ATI Radeon HD 5770 as the best/only replacement option available for the Mac Pro 1,1), I've been having graphics card issues which prevent me from running (or more accurately, viewing) pre-boot processes, such as Apple Hardware Test.The Mac Pro is fully updated, running OS X Snow Leopard, 10.6.7.

System Profiler identifies my current boot ROM version to be 'MP11.005C.B08'. I'm fairly sure the computer is not frozen because it responds to key combinations like 'control-command-option-eject', the keyboard shortcut for 'fast shutdown'.I have experimented with various other start-up key combinations (like 'c', or 'command-option-p-r' to flash the PRAM, etc.), and have confirmed (just by listening to the sounds that the Mac Pro makes while it's booting, for lack of any visual confirmation) that those 'low-level' boot processes are in fact working properly.My suspicion is that the new 5770 graphics card isn't being initialized early enough in the boot process, maybe as a result of the boot ROM upgrade that took place when I installed it. After hitting power, and pressing 'd', the optical drive spins up, and I can hear that the system disk is being read, and then everything quiets down, and there I am sitting in front of a blank screen. As best as I can tell, everything loads up normally, except that I can't see it. Everything else seems to work just fine.until I tried booting (while pressing the 'd' key) from my system disc, to run Apple Hardware Test. Ever since I installed the 5770 however, the screen remains blank until JUST before OS X has fully loaded (sometime AFTER the grey Apple logo would ordinarily appear on-screen, but before Finder opens up).At first, I didn't think much about it.

Ati Radeon 5770 Password Entry Prompt

Not being a qualified technician, I understand that many of my assumptions may be speculative, but I believe that I've been thorough so far.Fortunately, this problem is not debilitating for me right now, but I can foresee having troubles in the future (like when it comes time to upgrade the OS to Lion). Booting to the EFI password entry prompt as it was supposed to, but failing to route that low-level process to the video card - all I could see is the blank screen).So, dear reader, thank you for having the patience to read about my problem. Stalling/Crashing somehow 2. Additionally, I can't enable/disable my firmware password, because I can't see the EFI password prompt when I boot holding down the 'Option' key (After the brief 'Option'-boot period, it was clear that my system was doing one of two things 1.

It's a nuisance to be swapping graphics cards all the time, but if it's only for occasional system maintenance/diagnostics, then I guess I can deal with that.I find it hard to believe that Apple is going to upgrade the 5770's firmware to accommodate pre-2010 Pro users, if they haven't already. It seems like a lot of fuss (plus, my computer would be down while my only graphics card is 'in the shop') only to discover that it's not a broken card, just a symptom of incompatibility.I believe what I'm going to do is find a cheaper, FULLY compatible graphics card on e-bay (perhaps the GeForce 7300, which was the stock card for this Mac Pro when I bought it) and use it for diagnostic purposes. My guess is that getting another card isn't going to fix the problem. That it's not officially supported for use in my computer. I COULD call up Apple and tell them to replace my card, but I'm quite leery that they'll tell me exactly the same thing as when I bought it.

Even when the TV is off, the 5770 defaults all pre-boot processes to the mini-display port. What has been happening is that I have my 20' Apple Cinema display plugged into the DVI port, and my flat-screen TV plugged into the mini-display port. As is probably common with home users who refuse to seek hands-on guidance, the solution turned out to be obvious, and I feel really dumb. Just to re-cap, since it's been a few days Last time I posted, I was still struggling to get my Radeon 5770 graphics card to display anything during the boot process.Well, problem solved.

Ati Radeon 5770 Driver For Mac