Mac Pro Radeon X1900 HDMI output no signal

Actually I am not sure which category I should put this question, but hope guys you don't mind and help me.
I have a mac Pro 4-core with Radeon X1900.
I use BootCamp and running WindowsXP SP3
I bought a DVI to HDMI converter and connect to my Samgsung 40" LCD TV
there is no signal output even I tried all kinds of output setting.
I also try using MacOSX, still doesnot work
Pls help.
Thanks

Reset the SMC and PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
Next call Apple. Yo have 90 days of free telephone support
Complimentary Support (USA)
You can also
- Make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar

Similar Messages

My Mac Pro (2006) has suddenly stopped sending signal to the display monitor.

My Mac Pro (2006) has suddenly stopped sending signal to the display monitor. It coincided with plugging in an Epson printer via usb - while the system was running. Pretty dumb maybe? Could I have damaged the video card? Anyone ideas? Thanks

Howdy Le Batch,
I was looking into the issue you are seeing here, and came across a helpful article for this specific situation. It's named Apple computers: Troubleshooting issues with video on internal or external displays and can be found here:
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
If more than one video adapter is in use—or "daisy-chained"—troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Regards,
Sterling

Mac Pro ATI 5770: HDMI to Panasonic plasma TV

I have a Mac Pro 2x2.4 Quad Core with original ATI Radeon HD 5770 graphics card.
I use the computer for Final Cut Pro X and Pro Tools HD Native.
My monitor is an HP 2711x.
I would like to run a Category 2 HDMI cable from the 5770 to a Panasonic VIERA 50" plasma TV about 40 ft. away, to test how FCP X videos look.
(1) Can I have both the HP 2711x and the Panasonic connected to the 5770 at the same time?
(2) Do I need an HDMI adaptor of some sort to connect the 5770 to the Panasonic?

OK, I'm asking more.
Bear with me, I obviously don't know much about this.
Currently the video signal is going from 5770 --> HP 2711x via DVI.
The audio is going Mac Pro-->external DA converters via optical digital out from the Mac Pro.
I don't want this to change. I have a high quality audio system for FCP X and Pro Tools.
For the Panasonic, you suggest DVI-->HDMI. For this to work, don't I have to buy an Active converter to combine the audio with the video? Otherwise, the audio wouldn't get to the Panasonic.....right? Isn't this the case regardless of whether I use three monitors or not? I am probably off base here.
Assuming I am right that the DVI-->HDMI converter needs to be Active to combine video/audio, where does the audio come from? Is it already avaliable at the 5770 DVI connection? Or must it be tied into the converter separately somehow?
For the HP 2711x, you suggested either MiniDP-->DVI or MiniDP--> HDMI. Does it matter which I choose? Will they be exactly equivalent video quality?
FYI, I am running OS 10.7.4.

Mac Pro with X1900 - can I connect both 20" LCD and Sony Monitor?

I'm about to purchase a Mac Pro with the x1900 for editing video with Final Cut Pro Studio. I'll use a 20" monitor for main viewing, but would like to use a Sony PVM-14L2 as a playback monitor via Component video. Can I use one of the DVI outs of the x1900 to go to the Sony? I found this type of converter online: http://www.svideo.com/hdtvaiwr8500.html
Is anyone using a set-up like this? I figure it must be pretty common for folks who edit video on a Mac Pro to output to a playback monitor via Component video. Will the x1900 let me do that with the right cable?
Thanks,
joel

Hmm. I have that computer, card and dongle - I'll try it out tonight (PST) and let you know.
My gut feeling is that it won't work, or won't work as you would hope.
My powerbook had SVideo out on it, but even when connected to a TV, it would not work as a video out in the same way a fire wire preview through a camcorder did - it was a second monitor on a TV, and was not the same at all as a video out feed (it looked rather horrible in fact).
So, even if this does produce a component out signal, suitable for HDTV, I doubt it will work as a playback monitor.
But I'll post back in about 8 hours time (if someone does not beat me to it.)

Mac Pro with X1900 XT graphics card EFI boot display

Hi all,
I've got this problem with my mac pro with ATI Radeon X1900 XT - 1st DVI connected to the 23 inch apple display and the 2nd DVI connected to my optoma dlp projector.
My problem is that the EFI boot menu shows up on the 2nd DVI connection. So basically I see the boot menu only on the projector when it should have been on my apple display.
Can someone please help me figure this out. Can't seem to find any on google or anywhere else.
Thanks in advance for the help!

Sorry, I forgot to add that small detail..
I can switch both connections and it'll work for the mac part of the deal but the windows end cant switch screens - making the apple display the primary display on windows..
now it sounds like a "windows" issue doesnt it!?heh

Mac Pro, ATI X1900, Apple Cinema, and Boot Camp

Ok so I finally got Windows to install on to my Mac Pro. This is a long explanation because it includes a lot of information for users who may be having the same problems I had. My problem is at the bottom, but for those of you who are still stuck on the blank screen, READ ON!
Many have users been having problems installing Windows on Mac Pros with the ATI x1900 video card.
For Example, after running boot camp and loading XP the screen would go blank.
To get around this use the DVI to VGA addapter and plug a seperate monitor in, once the computer has finshed installing Windows, then install the drivers.
At this point my graphics card was still not installed correctly. I downloaded the driver off of the ATI website, however I kept recieving errors. So I unpakaged the driver and had the computer find a driver in that folder. Once this was done I went back and installed the remaining software without errors!
Now, currently I am still having to use a second monitor because my HD 23 inch was just showing a blank screen. To fix this I,
1. Installed the video card controller from the ATI website for the ATI X1900
2. Opened advanced settings and supported HD 1080i
3. Connected my HD monitor in the second DVI slot
4.exteneded onto that monitor
5. Switched that monitor to primary
And Perfect! It works
However, this is where problems began to arise. After customizing everything to my taste, I ran a test within this same program which sets all of your graphics card's settings to the optimal setting. I walked away because it was taking a long time, and when i came back my screen was totally messed up. It looked as if the settings had been changed and it had been moved up. With the top of the windows screen down where the dock is supposed to be, and then the dock right above that. I cannot correct this and it is extremely frustrating!
Is there anyway for me to correct this? It is normal in Mac Mode, but in XP i can't correct it. It just seems like there is one problem after another!

so did you install the bootcamp drivers?
because i had no luck with ati's drivers from their web site but apples drivers worked fine.

Ati Radeon no HDMI output

Hi,
I'm on a hybrid-graphics Intel/Ati HP dv6 and I'm trying to connect the HDMI video output to my LED TV, but xrandr doesn't recognize that video output.
$ xrandr --prop ~
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 32767 x 32767
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
EDID:
00ffffffffffff004ca3514200000000
00120103802213780a87f594574f8c27
27505400000001010101010101010101
010101010101121b567250000c303020
250058c2100000190000000f00000000
00000000001eb4027400000000fe0053
414d53554e470a2020202020000000fe
00313536415430352d4830370a200003
BACKLIGHT: 5 (0x00000005) range: (0,10)
Backlight: 5 (0x00000005) range: (0,10)
scaling mode: Full aspect
supported: None Full Center Full aspect
1366x768 60.0*+
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
1368x768_60.00 (0xc4) 85.2MHz
h: width 1368 start 1440 end 1576 total 1784 skew 0 clock 47.8KHz
v: height 768 start 771 end 781 total 798 clock 59.9Hz
$ lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA ~
00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Madison [Radeon HD 5000M Series] [1002:68c1] (rev ff) (prog-if ff)
$ pacman -Q | grep '^ati' ~
ati-dri 9.0-1
here is the Xorg log https://gist.github.com/4095083
any hint?
I've already tried to boot with TV on and connected.. it doesn't help
bye

On Xubuntu 13.04 HDMI output works fine. This is 'dmesg | grep vga' from Xubuntu:
[ 6.713480] [drm] Initialized drm 1.1.0 20060810
[ 6.754710] [drm] radeon defaulting to kernel modesetting.
[ 6.754715] [drm] radeon kernel modesetting enabled.
[ 6.801983] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 6.801984] [drm] Driver supports precise vblank timestamp query.
[ 6.990890] fbcon: inteldrmfb (fb0) is primary device
[ 7.770324] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 7.779740] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 7.779901] [drm] initializing kernel modesetting (REDWOOD 0x1002:0x68C1 0x17AA:0x3951).
[ 7.779939] [drm] register mmio base: 0xF8800000
[ 7.779940] [drm] register mmio size: 131072
[ 8.188157] [drm] Detected VRAM RAM=1024M, BAR=256M
[ 8.188162] [drm] RAM width 128bits DDR
[ 8.188379] [drm] radeon: 1024M of VRAM memory ready
[ 8.188382] [drm] radeon: 512M of GTT memory ready.
[ 8.188412] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 8.188415] [drm] Driver supports precise vblank timestamp query.
[ 8.188567] [drm] radeon: irq initialized.
[ 8.188575] [drm] GART: num cpu pages 131072, num gpu pages 131072
[ 8.189671] [drm] probing gen 2 caps for device 8086:45 = 1/0
[ 8.189751] [drm] Loading REDWOOD Microcode
[ 8.191961] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 8.209328] [drm] ring test on 0 succeeded in 1 usecs
[ 8.209393] [drm] ring test on 3 succeeded in 1 usecs
[ 8.209863] [drm] ib test on ring 0 succeeded in 0 usecs
[ 8.209910] [drm] ib test on ring 3 succeeded in 0 usecs
[ 8.264215] [drm] radeon atom DIG backlight initialized
[ 8.264220] [drm] Radeon Display Connectors
[ 8.264222] [drm] Connector 0:
[ 8.264225] [drm] LVDS-2
[ 8.264228] [drm] DDC: 0x6470 0x6470 0x6474 0x6474 0x6478 0x6478 0x647c 0x647c
[ 8.264229] [drm] Encoders:
[ 8.264231] [drm] LCD1: INTERNAL_UNIPHY
[ 8.264233] [drm] Connector 1:
[ 8.264235] [drm] HDMI-A-1
[ 8.264236] [drm] HPD1
[ 8.264239] [drm] DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
[ 8.264240] [drm] Encoders:
[ 8.264242] [drm] DFP1: INTERNAL_UNIPHY1
[ 8.264243] [drm] Connector 2:
[ 8.264245] [drm] VGA-2
[ 8.264248] [drm] DDC: 0x64d8 0x64d8 0x64dc 0x64dc 0x64e0 0x64e0 0x64e4 0x64e4
[ 8.264249] [drm] Encoders:
[ 8.264251] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 8.280383] [drm] Internal thermal controller with fan control
[ 8.280441] [drm] radeon: power management initialized
[ 8.306987] [drm] fb mappable at 0xC0142000
[ 8.306992] [drm] vram apper at 0xC0000000
[ 8.306995] [drm] size 4325376
[ 8.306998] [drm] fb depth is 24
[ 8.307001] [drm] pitch is 5632
[ 8.307222] radeon 0000:01:00.0: fb1: radeondrmfb frame buffer device
[ 8.307245] [drm] Initialized radeon 2.29.0 20080528 for 0000:01:00.0 on minor 1
[ 84.656646] Modules linked in: snd_hda_codec_hdmi iwlwifi coretemp snd_hda_codec_realtek joydev(F) snd_hda_intel(+) kvm_intel snd_hda_codec cfg80211 snd_seq_midi(F) snd_seq_midi_event(F) kvm jmb38x_ms snd_rawmidi(F) uvcvideo lpc_ich snd_seq(F) snd_hwdep(F) snd_pcm(F) bnep intel_ips ideapad_laptop videobuf2_vmalloc videobuf2_memops videobuf2_core memstick psmouse(F) snd_seq_device(F) snd_page_alloc(F) serio_raw(F) videodev snd_timer(F) snd(F) soundcore(F) parport_pc(F) rfcomm mei ppdev(F) bluetooth lp(F) sparse_keymap microcode(F) mac_hid parport(F) dm_multipath(F) scsi_dh(F) squashfs(F) overlayfs(F) nls_utf8 isofs(F) dm_raid45 xor(F) dm_mirror(F) dm_region_hash(F) dm_log(F) hid_generic usbhid hid tg3 ahci(F) libahci(F) ptp pps_core radeon i915 video(F) i2c_algo_bit ttm wmi drm_kms_helper drm sdhci_pci sdhci
And this is from Arch:
[ 7.449775] [drm] Initialized drm 1.1.0 20060810
[ 7.783307] [drm] radeon kernel modesetting enabled.
[ 7.783653] [drm] initializing kernel modesetting (REDWOOD 0x1002:0x68C1 0x17AA:0x3951).
[ 7.783689] [drm] register mmio base: 0xF8800000
[ 7.783690] [drm] register mmio size: 131072
[ 8.089499] [drm] Detected VRAM RAM=1024M, BAR=256M
[ 8.089504] [drm] RAM width 128bits DDR
[ 8.089607] [drm] radeon: 1024M of VRAM memory ready
[ 8.089609] [drm] radeon: 512M of GTT memory ready.
[ 8.089628] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 8.089629] [drm] Driver supports precise vblank timestamp query.
[ 8.089727] [drm] radeon: irq initialized.
[ 8.089731] [drm] GART: num cpu pages 131072, num gpu pages 131072
[ 8.090349] [drm] probing gen 2 caps for device 8086:45 = 2212d01/0
[ 8.090411] [drm] Loading REDWOOD Microcode
[ 8.316016] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 8.333172] [drm] ring test on 0 succeeded in 1 usecs
[ 8.333232] [drm] ring test on 3 succeeded in 1 usecs
[ 8.333618] [drm] ib test on ring 0 succeeded in 0 usecs
[ 8.333665] [drm] ib test on ring 3 succeeded in 0 usecs
[ 8.387040] [drm] radeon atom DIG backlight initialized
[ 8.387050] [drm] Radeon Display Connectors
[ 8.387055] [drm] Connector 0:
[ 8.387059] [drm] LVDS-1
[ 8.387066] [drm] DDC: 0x6470 0x6470 0x6474 0x6474 0x6478 0x6478 0x647c 0x647c
[ 8.387070] [drm] Encoders:
[ 8.387073] [drm] LCD1: INTERNAL_UNIPHY
[ 8.387076] [drm] Connector 1:
[ 8.387079] [drm] HDMI-A-1
[ 8.387081] [drm] HPD1
[ 8.387085] [drm] DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
[ 8.387087] [drm] Encoders:
[ 8.387090] [drm] DFP1: INTERNAL_UNIPHY1
[ 8.387092] [drm] Connector 2:
[ 8.387095] [drm] VGA-1
[ 8.387099] [drm] DDC: 0x64d8 0x64d8 0x64dc 0x64dc 0x64e0 0x64e0 0x64e4 0x64e4
[ 8.387101] [drm] Encoders:
[ 8.387104] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 8.400637] [drm] Internal thermal controller with fan control
[ 8.400694] [drm] radeon: power management initialized
[ 8.423209] [drm] fb mappable at 0xC0142000
[ 8.423214] [drm] vram apper at 0xC0000000
[ 8.423215] [drm] size 4325376
[ 8.423217] [drm] fb depth is 24
[ 8.423219] [drm] pitch is 5632
[ 8.423335] radeon 0000:01:00.0: fb1: radeondrmfb frame buffer device
[ 8.423358] [drm] Initialized radeon 2.30.0 20080528 for 0000:01:00.0 on minor 0
[ 8.423701] [drm] Memory usable by graphics device = 2048M
[ 8.423708] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
[ 8.475440] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 8.475441] [drm] Driver supports precise vblank timestamp query.
[ 8.511806] fbcon: inteldrmfb (fb0) is primary device
[ 9.304232] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 9.314084] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 1
Any ideas?
Last edited by fripuc (2013-06-01 18:01:47)

Mac Pro (ATI X1900) black screen at boot

Hey there,
I've been seeing some problems with my early Mac Pro when booting. Upon the first boot of the day, the machine sounds like it's starting up however the display remains black for upto 15 minutes before kicking in.
The problem used to happen occasionally but it's just been getting worse over the last 6 months.
It's got to the stage that if you put the machine into sleep mode, then come back 30 minutes later I'll have to wait for another 15 minutes before I can log back in.
If the machine has been running for a while and you perform a regular reboot, you can see the system booting and the login window comes up straight away.
I've tried a fresh install of Leopard on an external drive, problem still exists.
I also tried hooking up another display to the system just to check it wasn't the existing monitor and sure enough the problem remains.
Recently the display has been blanking for a few seconds when I've been using the system.
Searching to forums seems to suggest a whole bunch of issues with the ATI X1900 card, which is installed in this system.
Does anyone think the ATI card is the fault here?
In addition, I know the system is out of its initial years warranty but it seems like the ATI card has some known problems, so what's the likelyhood of Apple helping me out here?

You are chasing down the wrong rabbit hole is my best guess, as bad as the X1900 might be.
Rule out marginal RAM, Seagate drives, 3rd party USB/FW devices, controllers (other than X1900), even modem/router. All it takes is a bad USB or FW (or probably RJ45) cable.
No need to reinstall. Now that you have, clone your system for backup and testing with SuperDuper and run Disk Warrior, too, and try that. Might want to rerun the last combo update. And I always run the combo update from another drive than the system being updated.
SuperDuper forces the newly cloned system to rebuild all the temp files, logs, caches and such that are best done by itself when first booted.
Other things to try are reset the SMC RESET button on pre-2008 Mac Pro (on 2008 model, leave it unplugged overnight, no cables attached to clear or reset the SMC) and then zap NVRAM on cold boot.
See this article:
http://www.macfixit.com/article.php?story=20060131080021235

Sound disabled on mac pro? input and output

hello
I bought my Mac Pro less that 1 year ago.
The sound seems to be disabled. I cannot hear and I cannot be heard. When pushing the relevant buttons to increase or decrease the sound, the screen displays the sound but nothing happens.
Could you please advise?
Many thanks!
Eurvad

This forum is for troubleshooting Apple Software Update, a software component for Windows, that downloads updates to Apple software.
If you're having issues with Windows through Boot Camp I suggest you post your question over in the Boot Camp forums:
http://discussions.apple.com/forum.jspa?forumID=1165

Satellite Pro L650-1CG - HDMI output not working

Laptop: Toshiba Satellite Pro L650-1CG, Intel i3-350M, ATI 5650, 4GB RAM, 320GB HDD
When I plug my laptop into my Toshiba HDTV and select 'Connect to a projector', all I get on the TV is a black screen.
Catalyst Control Centre can 'see' the TV, and I can adjust resolution options for both displays, but no matter what options I try, I can't get the TV to show a picture/sound.
The TV is obviously detecting SOMETHING, because it goes from a blue screen to black. On device manager, I can see the HDMI Codec but even though it says it's enabled, I can't set it as default. It says underneath that it is 'unplugged', and when I run the HDMI Control program, it says 'To use HDMI Control, you must enable it'.
I have all the latest ATI/sound drivers, as well as pretty much every driver update out there. Also, there is nothing wrong with the cable or my TV, my PS3 uses the same connection.

Generally speaking the whole thing is quite simply. From time to time I connect my Satellite P500 to BRAVIA LCD TV and I get pic on it in 5 seconds only.
TV is on
Notebook is ON
Connecting HDMI cable on both devices
On TV I must enable HDMI port
On notebook use FN+F5 and I get all available options and switch to TV only.
It works perfectly.
I dont know why you use projector option. Is HDMI port enabled properly on your TV?

When connecting my Mac Pro to an Acer monitor, the signal is not stable.

The signal switches to static about every other second.

Is that the 5770 card?
And what interface are you using? 15-pin 3-row Analog VGA? DVI? DisplayPort?
And what adapter are you using?

Lousy Performance of Mac Pro X1900 XT in Leopard

Being the paranoid person I am, I installed Leopard to an external FW 800 drive to test it. Immediately, the window drawing in Leopard did not seem as snappy to me as it did in Tiger. Then, I pulled up iTunes, to check what version of iTunes comes with Leopard 10.5.0... I was stunned, not by the version of iTunes, but at the graphics lameness I witnessed.
If you launch iTunes then choose iTunes | About iTunes you will see that when the credits scroll by, they scroll by all choppy and herky-jerky. Yes folks, that's right, Apple's fastest and most top of the line machine -- a Mac Pro with an X1900 XT -- is not sufficiently swift enough to properly display the credits for iTunes.
Yes, I tried 10.5.1, same difference.
Needless to say, I'm sticking with Tiger until Apple fixes the X1900 XT driver(s) in Leopard.
Can anyone else with a Mac Pro and X1900 XT please go to iTunes | About iTunes and commiserate?

Just for info; Leopard is not a full 64 bit operating system. In fact, there is only 1 Apple GUI app that is compiled for x86_64 and that is Xcode, and even that runs in 32 bit mode by default, unless you uncheck the "Run in 32 bit mode" box when you do a Get Info on it.
There are many 64 bit frameworks and libraries, but the rest of the operating system applications are all 32 bit.
You can see that for yourself by running:
file /path to applications/* | grep x86_64
In a terminal.
Hyperion:~ will$ file /Applications/Utilities//Contents/MacOS/ | grep x86_64
/Applications/Utilities/OSXPM.app/Contents/MacOS/OSXPM: Mach-O 64-bit executable x86_64
Hyperion:~ will$
I have 2 x86_64 apps, but only because I recompiled them to see if they worked.
There are a handful of x86_64 apps in /usr/bin and /usr/sbin, but thats about it. Oh, Apache is 64 bit by the way.

Mac Pro 4k 60Hz suppot

Does the new Mac Pro support 60Hz 4K output via thunderbolt2 to the Sharp monitor sold with it from Apple? If not is this an issue with the OS or the hardware?

>Yes. The HDMI port is limited to 30hz.
I don't agree. From the article:
These displays require using a Mini DisplayPort to DisplayPort cable or a High-Speed HDMI cable to connect to your Mac Pro. European versions of these displays do not include an HDMI port.
Note that these displays default to 30 Hz (instead of 60 Hz) and need to be manually configured to 60 Hz using the display's built-in controls.
The DISPLAYS need their parameters changed. That is not a limitation of the HDMI port on the Mac.

Mac pro 1,1 Graphics card upgrade

Hi Im using a Mac pro 1,1 with a TI Radeon X1900 XT: That i need to upgrade because i believe the card is going bad. I took the card out & blew all the dust out & re seated the card & it worked great for a couple days but now Im back to having issues with it again. i.e computer locking up & wierd lines on both diplays & even distorted graphics.
Anyways I use 2 23" cinema displays. I want to get a new card that will support this set up. OWC sells a card (ATI Radeon HD 5770 Graphics Upgrade Kit) that is supposed to work with a Mac pro 1,1, but it has 1 dual link dvi & 2 minidisplay ports.
My question is will the 5770 work with the 1,1 & can I hook up my two 23" Cinema diplays to the mini display ports with a adapter? Or does anybody recommend a different card? Im a photographer mainly using photoshop CS5, Lightroom, inDesign, & very little video editing.
Thank you in advance for any help!
Tony
Spec listed below:
Model Name:    Mac Pro
Model Identifier:    MacPro1,1
Processor Name:    Dual-Core Intel Xeon
Processor Speed:    2.66 GHz
Number Of Processors:    2
Total Number Of Cores:    4
L2 Cache (per processor):    4 MB
Memory:    12 GB
Bus Speed:    1.33 GHz
Boot ROM Version:    MP11.005C.B08
SMC Version (system):    1.7f10
TI Radeon X1900 XT:
Chipset Model:    ATY,RadeonX1900
Type:    GPU
Bus:    PCIe
Slot:    Slot-1
PCIe Lane Width:    x16
VRAM (Total):    512 MB
Vendor:    ATI (0x1002)
Device ID:    0x7249
Revision ID:    0x0000
ROM Revision:    113-A52027-140
EFI Driver Version:    01.00.140
Displays:
Cinema HD:
Resolution:    1920 x 1200
Pixel Depth:    32-Bit Color (ARGB8888)
Display Serial Number:    2A7442CDXMN
Main Display:    Yes
Mirror:    Off
Online:    Yes
Rotation:    Supported
Cinema HD:
Resolution:    1920 x 1200
Pixel Depth:    32-Bit Color (ARGB8888)
Display Serial Number:    2A83116JXMN
Mirror:    Off
Online:    Yes
Rotation:    Supported

Tried reading the comments on the product page?
Noted if and how many threads there are here?
Sorry, but has been asked every day pretty much for last year.
Yes with 10.6.5+
5770 in the 2006 Mac Pro
Radeon 5870 5770 2006 Mac Pro
ATI Radeon HD 5770 MC742ZM A Apple Store

Early 2008 Mac Pro 3,1 Mystery Logic Board/GPU Issue

I recently received an Early 2008 Mac Pro 3,1 for free because the owner couldn't figure out what was wrong with it. It would boot up with the startup chime, but never output any video, and kept rebooting and replaying the startup chime. Using the diagnostic LEDs on the logic board, I was able to see that the Power Good LED (LED 7) and the EFI LED (LED 9) were both on, but the GPU LED (LED 8) never lit up. After trying all the PCI slots and confirming that the graphics card worked in another Mac Pro, I confirmed it wasn't the graphics card. I then tried a different power supply and different power supply cables, different RAM, different RAM boards, but still nothing. (Note: I also went through all the usual stuff: Power Cycling, PRAM, SMC Reset)
I then ordered a replacement logic board (used from eBay) and spent the weekend swapping out the logic board. After the swap, the Mac Pro STILL won't output video, and now the EFI LED (LED 9) won't even light up. Tried resetting the EFI Firmware via a CD, and still nothing. Does anyone have any idea as to what the issue could be? I'm 95% certain I plugged everything back in correctly on the board, but I don't know what else to do other than tear it apart again to confirm everything is plugged in. The only other thing I can think of is that the second logic board I received was also bad.
Please help!!!

Your problem sounds like a graphics card problem to me.
confirming that the graphics card worked in another Mac Pro,
Was this also a Mac Pro 2008 model? was it running the same Mac OS X version as you are testing? what version?
what graphics card are you trying to use? Genuine Apple or flashed PC or unflashed PC? what Mac OS X version?
That second board sounds Bad to me if it won't say EFI-OK.

Mac Pro Radeon X1900 HDMI output no signal

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