OS X :: Two Monitors Connected Via DVI To A Flashed XFX 4870 - One Monitor Is Not Working?
Apr 9, 2010
I have a new issue with my Mac Pro (3,1 - 2008), it just popped up (and I don't think it was caused by 10.6.3, I remember this working correctly after it was installed I have two monitors connected via DVI to a flashed XFX 4870. The 4870 has never given me any trouble.In the Energy Saver settings, I usually set the machine to never sleep, and the displays to sleep after 5 minutes. This used to work great, never had any trouble with it, ever. Now, the displays don't go to sleep after 5 minutes, they just stay on with a screensaver.
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Dec 2, 2008
I have bought a flashed 4870 for my 1st Gen Mac Pro and it works fine. But yesterday i wanted to plug a second 23" ACD in and woundered that its not working. Can i flash my card with another ROM so that i can use two monitors? In a german forum there are some people who has the same card and for them it works with 2 monitors ...
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Aug 19, 2009
I have bought a flashed 4870 for my 1st Gen Mac Pro and it works fine. But yesterday i wanted to plug a second 23" ACD in and woundered that its not working.
Can i flash my card with another ROM so that i can use two monitors? In a german forum there are some people who has the same card and for them it works with 2 monitors.
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Feb 23, 2010
I went for flashed Sapphire 4870 512 off eBay for my Mac Pro 1,1 running SL 10.6.2, with two Viewsonic VP2030b. The guy selling the card had sold flashed cards before and had 100% feedback, said the card worked with dual monitors and supported SL. Got the card, installed it without a problem, but could not get it to work with both monitors. Second monitor said no signal on both DVI channels. Checked all the wires, reinstalled, rebooted, no luck. Plugged both into my 7300GT, no issues at all. At one point, I got the left monitor to boot as the extended desktop, showing the dock but not showing the HDD or icons (which should be on the right screen), but the right screen still showed no signal and was black. Used the gather windows botton in the display preferences to see if adjusting settings helped, still nothing. Detect displays button was no help either. Is this a compatibility problem on my end or a flashing problem on his? Contacted him and he said he had no issues with his MP 1,1 and two 20" Apple displays.
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Feb 22, 2010
guys would a flashed 4870 from this tutorial
[URL]
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Mar 30, 2009
Ever since the 3870 came out last year, I've been waiting to see if anyone was able to dump the ROM from the Mac version and flash a PC version with it. But it seems no one was able to do it.
How come suddenly everyone and their brother is now able to flash the PC 4870? Anyone know what the differences between the two are, that would prevent the 3870 from being flashed successfully?
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Sep 11, 2009
I have a Mac Pro 1.1 and I've been successfully running a flashed XFX ATi 4870 card for a month or so.
Yesterday evening I left my computer in sleep mode, when I came back it appeared to be awake with only one of the two screens working and everything frozen. Both screens were connected to an Apple ATi 2600 XT and nothing was connected to the 4870.
I held down the power button and restarted, the fans on the graphics cards ramp up and then down as usual and the computer makes the startup dong noise. I can hear the hard drives and optical drives working as usual then the drives appear to shutdown and I'm left with the computer apparently doing nothing.
- Fans are running
- Screens are in standby (LED's on)
- Both screens are connected to the ATi 2600
- 2 x 20in Apple Cinema Displays
- Nothing is connected to the ATi 4870
- No LEDs are lit up inside the case
Once I remove the ATi 4870 the computer starts up normally, putting the 4870 back in give the same startup problem.
Is there anything I can do to get the 4870 working again?
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Sep 30, 2009
I am looking at putting one of these cards in my first gen Mac Pro and was wondering if anyone has had any problems with compatibility issues etc.
I am looking at getting one from bruinmacs and was looking for feedback from others that may have bought one and whether there have been any problems.
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Jun 6, 2009
I have just ordered a xfx 4870 that will be placed into my mac pro 2006 (1.1). I dont have the infamous power cables from ati so i was wondering if it would be possible to use the power from the optical drive. i have two 6-pin pcie power cables that each connects to a 4-pin molex. i addition to these i have a 4-pin molex Y splitter.
With this setup i should be able to feed the card with power but is this dangerous or will the system be unstable? what will happen
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Jun 6, 2009
I recently flashed my Sapphire 4870 1gb card and haven't been able to get dual monitor support working in Mac OS. Has anyone been able to get this working on a Sapphire 4870?
It works fine in Windows, not sure why it wont work in MacOS as I imagine the 10.5.7 drivers should be doing all the work.
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Jun 15, 2009
Wondering if anyone has successfully flashed a HIS 4870 IceQ 4+ Turbo 1GB card for their Mac Pro? If so does the original apple 4870.rom work or do I need a custom rom
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Aug 29, 2009
09 Quad Mac Pro, with flashed 1g XFX 4870 ...
all the OpenCL sample apps from Apple, except for the "hello world" example, are failing.
Can anyone else confirm the same errors on their setup? Just so that I know for sure it is due to the 4870.
I will try putting in my GT120 and see what happens.
Code:
Last login: Sat Aug 29 16:35:11 on ttys002
/Users/mani/Downloads/OpenCL_RayTraced_Quaternion_Julia-Set_Example/build/Debug/qjulia ; exit;
Galactus:~ mani$ /Users/mani/Downloads/OpenCL_RayTraced_Quaternion_Julia-Set_Example/build/Debug/qjulia ; exit;
Creating Texture 512 x 512...
----------------------------------------------------------------------
Using active OpenGL context...
----------------------------------------------------------------------
Connecting to AMD Radeon HD 4870...
----------------------------------------------------------------------
Loading kernel source from file 'qjulia_kernel.cl'...
Error opening file qjulia_kernel.cl
Error: Failed to load kernel source!
Failed to setup compute kernel! Error 1
logout
[Process completed]
Code:
/Users/mani/Downloads/transpose/transpose ; exit;
Galactus:~ mani$ /Users/mani/Downloads/transpose/transpose ; exit;
Error: Failed to load compute program from file!
logout
[Process completed]
And here's output from hello.c, which happens to work:
Code:
Galactus:~ mani$ /Users/mani/Downloads/OpenCL_Hello_World_Example/build/Debug/hello ; exit;
Computed '1024/1024' correct values!
logout
[Process completed]
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Feb 18, 2010
I've got a 1GB XFX 4870 that I flashed using the info from the exhaustive 4870 flashing thread. It's being used in my Mac Pro with a GT120 and I use 3 monitors.
When using Aperture 3 the 2 displays that are attached to the 4870 exhibit graphical glitches when performing adjustments...
The glitches range from a garbled mess of of the original image, to being able to see the previously viewed image very briefly. After I've performed one adjustment on the image the adjustments work as they should. The display with the GT120 performs fine with fairly smooth performance.
This was not an issue with Aperture 2.
Are there any other users of flashed 4870's and Aperture 3 seeing this issue?
I thought that the card could the card be failing but it still gives stellar performance everywhere else including gaming in Windows 7.
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Apr 1, 2010
by following the very active community you have set up for the scene of flashing PC cards to work under OS X I myself bought a 4870 XFX ZWFL & ZWFC 1GB and flashed it.This occurred about one month ago, and since then the card has been working flawlessly, so a big thanks for that.
A very nasty problem occurred after the 10.6.3 update tho, as since then I started having horrible fps's in any application that required 3d acceleration (say, World of Warcraft); down from a rock steady 50-60fps (that easily topped the 120 mark) i can barely get a 30fps after the update.
I checked the other topics, and all of them pointed me into downloading the last version of Zeus and update the drivers, wich I did for every time an update (or fix for a fix) as been released, and tried every time to install both before and after the reboot from the 10.6.3 combo update.
I'm using only one monitor, so I did not encounter any problem concerning dvi ports not working or anything.
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Jul 28, 2010
I'm running a Mac Pro 1,1 with a flashed ATI HD4870 - everything has been fine since getting the card back in March - played HL2 and Torchlight with nice framerates and no problems.
I bought Starcraft 2 today, partly to give the new card a proper workout.
Everything looked great to start with ? smooth graphics, nice lighting effects etc. then I started to get flashing lines and angular artifacts appearing all over the screen.
Now, thing is, this is what happened to my old X1900 XT when playing WoW. At first just slight graphic glitches and flashes but, over time, getting worse more quickly until the game became unplayable within minutes of starting it up. Getting the HD4870 fixed this and I was able to play WoW no problems after that.
I'm just wondering if this means my card is (already) on its way out - deteriorating like the X1900 did - or if it's something else in the computer that might be showing signs of stress?
I haven't seen anything here about the HD4870 failing on Starcraft
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Jun 7, 2009
I guess curiosity got the best of me and I attempted to re-flash my working Sapphire 4870 with a different bios image provided here, and now when I boot I dont get any video. Just a black screen and no chime.
After this I tried putting in my old 7200gt to try and get it to boot so I could reflash back to the old firmware - but as long as the 4870 is installed I get no video at all. As soon as I take it out everything works fine.
Please advise me on what to do next.
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Nov 6, 2009
i recently bought a Sapphire Radeon HD 4870 512M GDDR5 PCI-E DUAL DVI-I/TVO SKU# 21133-00 S/N 180825044742 flashed with mac firmware.
The instructions said to take out my existing card put the sapphire in slot 1, then boot up and install drivers.
So i took my Nvidia 7300 GT card out of slot 1 and put in the 4870, then started up. I get the grey start up screen with the apple in low resolution for about 8 sec, then the screen just goes blank.
What am i doing wrong?... do i need to keep the Nvidia 7300 GT in slot 2, then boot up connected to that first?
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Aug 30, 2009
I have a MacPro3,1. It currently runs 10.5.7, and I use it for development. I bought Snow Leopard on Friday, and I'm worried about installing it. I have a flashed Sapphire 4870 card running in addition to my 2600 XT (stock.) I made the BIOS with which I flashed the card using a python script I found on MacRumors.
I know the card works pretty well in 10.5.7. I have Dual-DVI, rotation support, and Quartz Extreme working. Sleep does not work (crashes the machine) but I'm pretty okay with that; I seldom sleep the Mac anyways.
I understand that to get everything working in Snow Leopard, I have to add the device ID to a .kext file that is installed with Snow Leopard.
I've found the device ID in System Profiler on this line:
Device ID:0x9440
Is this the right line to look for a device ID? Should I be looking somewhere else?
Also, on [URL], netkas says "just need to add dev-id into ATI4800Controller.kext." for my kind of card. How do I add the device ID to the kext? I think it goes somewhere in info.plist, but I'm not sure...
Will I still have Dual-DVI? It's very critical that I have it working, so I'd like to make sure before installing the new OS.
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Aug 6, 2010
Apparently, Apple is seeding updated Graphics drivers .
Can any of our GPU gurus hazard a guess at whether these will benefit those of us with flashed cards, or will they more likely brick them, or do we just not know until we test them?
I don't want to get my hopes up for improvements that might never happen!
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Oct 8, 2009
So I have an Early 2009 Octocore 2.93 and I have a flashed ATI Radeo HD 4870 video card that is supposed to work on a PC but its flashed so it works on a mac. I know its not officially supported but the issue im running into is that the operating system cannot recognize the full resolution the HP LP3065 30 inch display is capable of. The display can run up to 2560x1600 on any other system but not with my ten thousand dollar machine. The windows side can display at the full resolution but Snow Leopard can only run 1280x800 and it makes the OS look like a pile of dog **** on sunday.
Anyone else run into this issue?
Heres the link btw to where this guy shows how to flash the card.
[URL]
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Jul 8, 2010
see attachments.
Again: Everything works, I'm wondering if this is normal though.
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Feb 4, 2010
Using the ati flashing tool I flashed the XFX 4870 1GB ZFWC. When I start up a dialog shows up saying the cables are not connected, when in fact they are (I have double and triple checked). Also when I put the computer to sleep then wake it up a weird distorted blocky pattern appears and I have to restart the computer to fix the problem.
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Jun 16, 2010
I have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.
I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).
The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.
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Jun 16, 2009
I recently purchased a second 22" Dell 2209WA to go with my Mac Pro. They are both running from the ATI Radeon 4870 on my Mac Pro (2009 Quad) but the Expose performance seems to be really quite poor. Displaying all the windows is very juddery and not smooth at all. Is that what I should be expecting now? I wouldn't have on a �2000 Machine. Going into Spaces is fine, it's just Expose thats poor.
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Sep 3, 2010
I have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.
I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).
The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.
Has anybody else faced this issue? Is there something that can be done? This shouldn't be happening, right?
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Apr 8, 2008
I've been using my new Mac Pro with no issues for several weeks with the same hardware setup & OS all along. Suddenly I'm getting kernel panics. It happens when I startup from the system drive or from install disc. And sometimes when I startup it just hangs on the blue screen with no desktop coming onto the screen. It started happening after I did a Carbon Copy Clone of my system drive onto a firewire drive, & when I came back to my computer several hours later the screen was black & white stripes. I've been on the phone with apple care several times and even took my machine to the genius bar today where they recommended a stress test and said I would get it back in 5 - 10 business days (gasp!). Of course there were no kernel panics while I was there (for an hour, and at home I'm getting them every few minutes), so I decided to take it home & check it over myself in a process of elimination.
I've removed all third party ram, and have 2 hard drives installed - the system drive & the drive I use for time machine. The RAM is listed as OK in system profiler and the HD's are verified with Disk Utility - also disk permissions verified & repaired on the system drive. I have 2 Acer monitors - model AL2016W. I tried plugging in one at a time in each DVI port for a total of 4 tests - each with a fresh startup. There were no kernel panics. Then I plugged them both in at the same time, started up, & got the kernel panics. Tried this twice with the same results. With or without any applications open, it's the same. Within 2 - 4 minutes I get a kernel panic when both monitors are plugged in. Later, I got kernel panics with just one monitor connected. So my question is; What could be the reason it's getting kernel panics sometimes & sometimes not? As I said, nothing has changed in my setup since I got the machine - and everything was running fine since mid February.
During my testing I have these connections:
One or two monitors. Power cord. Apple wired keyboard & mouse (these were not connected at the time this started happening so I have eliminated them from the possible source of trouble.) All bluetooth devices are powered off & no other external devices are connected. I just completed the Apple Hardware Test & it detected this error: "4HDD/11/40000004.SATA(0,0)" Does this mean there's something wrong with a hard drive? If so, which one?
Mac Pro Early 2008 2.8 Mhz 8 core
OS X 10.5.1
2 gigs original "apple" RAM
HD 1 - Samsung F1 (system - 750 gigs of which 420 are being used)
HD 2 - Hitachi (time machine - 1 TB)
2 Acer monitors DVI
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Oct 22, 2009
I was surprised one day to find an inch of white line running from top to bottom on my screen. Then after a week it expanded to two inches white line, then suddenly it turned all black and I can't see two inches of my screen from the right edge. I was reading some forums and found out that I can use a dell monitor as a secondary monitor, but is it possible to use the dell monitor as the primary monitor in case the black line will spread throughout the entire iMac screen? so the iMac would serve as a stand alone processor like a regular desktop?
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Jun 15, 2010
It made a loud (very loud) beep, while the screen was grey. The power button flashed in yellow, and then became orange, and then chimed like it usually does, and booted normally.
Now she is using it, it's like if nothing happened.
Specs: iMac DV 400mHz, 640 MB. Mac OS 10.4.11
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Sep 5, 2009
I've been trying to connect my MacBook to my Dell monitor. So, first I bought a mini DVI-VGA cord, but realized that I had a DVI not an AVI connection. In order to save time and money, I bought a DVI (female)-VGA (male) adapter. Everything fits in and connects perfectly. The problem is: when I turn on my Dell monitor nothing shows up. It says it's on safe mode and all I have to do is press a key on the keyboard or move my mouse. I do that, but it doesn't detect anything.
I know my laptop detects the monitor because when I go to display --> arrangement, I see there are 2 screens and display --> Gather Windows, a window for the Dell does pop up. From my understanding that once you plug in all the cords from your Mac to your monitor, it should work right away. So whats wrong with my dual screen? And how can I get it working?
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Mar 16, 2009
I installed the OEM Radeon HD 4870 in a First Generation "Clovertown" 3.0GHz 8-core Mac Pro. It's working. This is the model I mean (see right column). [URL]. I pulled the card from a Nehalem.) I booted from the drive that came with the Nehalem. (Easier than cloning the system or trying to get the drivers to copy over - which gave an error on boot.) It runs with no problems. I'm busily running 3D Game benchmarks which I will report back on later tonight or tomorrow morning.
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