Mac Pro Dual Monitor Problem

I have a MacPro 4,1 with an ATI Radeon HD 5770 video card. I'm running OS X 10.6.8.  I have an Apple 20" Monitor and a Hannspree 23" monitor.  The problem I have is that when the computer goes into standby mode, 2 times out of 5 it will come back up with the primary monitor switched from the Apple to the Hannspree.  I then have to go into the Display Preferences and switch the monitor arrangement, and the menu bar.  Not a huge problem I grant you, but one that is vexing me nonetheless.
Also on an occasion...perhaps 1 time out of 25 the Apple monitor has a case of the jaggies, and is only fixable by shutting down the whole computer and restarting.  This is really bad, considering it reminds me of when I get migrane headaches and my vision is constricted.  It almost makes me nautious.

Apple's has three, 2xMDP + DVI
https://support.apple.com/kb/TS3477

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    Compatible
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    So now I have this really versatile enclosure that apparently can't run on Mac 10.6 with ANY esata controller for the mac. I really like the design of the enclosure, with its hardware based raid that is hot swappable and has a small footprint. However there seems to be no way to get a controller card for this device that will work on a 10.6 mac.
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    Thank you hatter for your reply.
    I'm familiar with OWC, as I've done business with them since 2001, as well as XLR8.
    I have a 2008 mac pro so the 2009 model related problems are not an issue in my situation
    As I stated above I go to reputable vendors for my hardware who have specific mac experience. I look specifically for hardened compatibility so that there is support for things like deep sleep. The Sans Digital enclosure was over $200..it was not cheap. The USB/Esata combo is the most common interface for the enclosure storage market. Having a compatibility issue is a vendor fault, not the buyer. Having minutiae flavors of esata compatability based on chipsets roulette wheel is inexcusable. The enclosure needs that I have is for the medium to be removable and be able to be rebuilt at the hardware level, i.e. at the enclosure's control panel. To the mac its just a drive. The hotswap and back up is transparent to the OS and mac hardware, and allows me to change from raid 0/1 and do back up right from the enclosure interface.
    So far I haven't had problems with USB/Firewire. Meanwhile Esata to me has been nothing but beta testing for vendors and seeing how the chipset manufacturers have gone loosey-goosey on following spec and just dump cheap chinese crap into the market with no pride.
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    USB/FW, PATA, SATA, SCSI
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    2) native drivers
    3) bootable. Period.
    4) buy a controller card/raid card, plug it in, format, it works even through major OS upgrades.
    5) USB/FW: Hot-swapable. Yes it really does work.
    Esata:
    1) Multiple standards (again, look at the Sonnet website to see the minefield one has to walk through to mate a controller card to an enclosure)
    2) non native drivers. Buying an esata card is like marrying into the vendors family. Plus if you manage to get things working and do an OS upgrade, you are playing russian roulette. If you system boots off it, then get life insurance because you may kill yourself.
    3)Not bootable and no one seems to care to explain why. Whats odd is that some earlier PCIx cards were bootable (like sonnet Temp 4x4) but their PCIe successors aren't. Not sure if this has to do with the host computer BIOS and/or the current chipsets from SI which rely on custom drivers from the vendors. Another lovely example of this are the ODD_SATA ports on the Mac pro: storage only, not bootable. Sure it makes sense now that I've learned it the hard way, however to users of FW/USB and even IDE, one would think that motherboard ports are bootable. Yes I know this is a mac bios thing and its not even considered as part of the feature set of the computer
    4) As I've shown, each controller card seems to be unique, even if its from the same vendor. Even the drivers vary from card to card! Heck even the vendors are unsure as to how compatible their controller cards are with various enclosures. That is proprietary, not industry standard. OS upgrades doesn't seem to provide native driver support for Direct access and/or port multiplying interfaces. The problem with this is that film/video users like myself like to build bullet proof systems, and with raids that I've built from IDE, FW, or USB, I've never had the minutiae of compatibility issues as I've had with esata. I installed an Acard raid controller in my dual 800 back in 2001, installed the drives and forgot about it. it just worked through multiple OS upgrades. Not sure whats gong on with esata.
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    My analysis is this: Esata is basically a proprietary format to the vendor that sells the hardware, while USB/FW is an industry standard. I bought a quality enclosure that said "esata", I bought a quality controller that said "esata", it didn't work. I had to learn the hard way about DA and PM enclosures and now about chipset conflicts. I've built computers since the late 80's amiga days, hot-rodding that computer well beyond spec and with custom cooling. SCSI terminators and IDE master/slave issues were easy-cheesey because they followed straightforward rules. This esata stuff is just plain sloppy work on the part of vendors and as Danny Glover said I'm getting to old for this **** as far as being a beta tester for hardware.

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    It was about 3 or 4 days ago that I did the monitor swap. Since then, Viewsonic #2 has been fine, as I expected, solid, looking good. But about 6 hours ago, I was shocked to see Viewsonic #2 - now hooked up as my secondary display on the Mac Pro - has just started the same flicker. And it started getting worse, pretty quickly. Within an hour or so, it was becoming unusable. Once again, turning it off helped - a little - and so did shutting done the Mac and leaving it off. But soon after powering it up, it starts going haywire again. It's got the exact same problem that killed the other monitor.
    I am thinking that the odds of two different monitors failing (hardware going bad) like this is extremely unlikely. I know it's not the cable or plug, because when I moved Viewsonic #1 to a different computer, it's still broken. I don't think it's the video card, because the "badness" moves with the bad monitor, and the primary display is fine.
    The only think that makes any sense (and I'll admit it doesn't make much), is that there's something about this Mac Pro that is causing the 2nd monitor to fail - actually damaging the monitor. That sounds pretty unlikely, but it's the least unlikely think I can think of. Could it be outputting a signal that kills the monitor hardware? I know that sounds crazy....I'm open to suggestions if anyone has another theory.
    I've never heard of a computer (or a video card) causing a display to fail, but given the fact that these monitors were both fine before I hooked them up to this Mac, and that both of them seem to have gone belly-up now (and they stay broken if moved back to another computer) really leaves me scratching my head.
    What on earth is happening here? Any ideas?

    Hi Ltm,
    Is your set up is like this? Main monitor attached to dvi port on 4870, other displays attached to the mini port via adapter?
    If it is, those mini ports have been the source of many peoples problems here. Maybe not even so much the ports but the adapters. Some seem to work better than others. I bought two in the 20 dollar range from Apple and they both worked poorly (and I have all Apple displays!). Apparently Apple sells one for about 100 bucks that works the best, but I changed cards before buying that.
    OWC has an interesting mini-display port connecter now that looks good but also goes for a hundred or so.
    But what is precisely going on with your Viewsonics to seemingly destroy them, I don't know. I've read of similar problems to yours, but the displays never stayed in a poor condition after the problem was found. Yours is the first post I've read of displays being actually killed off.
    If you could take the now damaged display and one that isn't to an Apple store to try on one of their Macs, maybe they could turn up something for you, an incompatibility somewhere maybe. But it's a pretty bizarre situation made worse by Apples decision to introduce unnecessary variables by going with that mini-display port.

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    Hello,
    I have been having a lot of trouble with a Mac Pro and separate displays. First, it took me quite a bit of playing around to get it to recognize the first display plugged directly into the DVI port. I then went to add a second monitor through a mini display port to DVI adapter, and I cannot get the Mac Pro to recognize the monitor. Nothing shows up in display to suggest that the other monitor is there. Clicking on Detect Displays does nothing. Thinking it could potentially be a bad video card. I am also sure that the adapter, cable, and monitor are not faulty.
    Thanks!

    The video card is an Nvidia GeForce GT 120 512MB RAM. It is a Mac Pro 4,1. I have double checked every connected and I know nothing is loose. Also, when changing out trying to change monitors in hopes that it would be detected, the Mac shut down because of a problem. All of this keeps leading me to a bad video card.

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