MacPro, ATI Radeon X1900 XT + dual Dell 2407WFP

Hi all,
I have problems running 2 Dell 2407WFP displays in the highest resolution (1920x1200).
I have no problem running 1 display using DVI.
When I add the 2nd display, with DVI, it does not detect a signal. When I change the connection of the 2nd display from DVI to VGA (with adapter) it works. However, now the maximum resolution is 1024x768)
How do I set this system up so that both diplays will show 1920x1200?
Thanks,
Oscar.
MacPro Quad Xeon Mac OS X (10.4.7)

Does it make a difference which way display you connect to which port as you should be able to use DVI with both displays. Also, check you cables. Make sure they both work. Also, try the usual round of resets like PRAM…
http://docs.info.apple.com/article.html?artnum=2238
… and the System Management Controller…
http://docs.info.apple.com/article.html?artnum=304123

Similar Messages

Brandnew 8-core MacPro and ATI Radeon X1900 xt

I had this quadcore MacPro with an ATI Radeon X1900 XT and now I am switching to a newer octo-core MacPro.
I managed to install the card into the computer case. But alas, i don't see anything on my screen...
System Profiler discovers the card but gives it an generic name "Display" with Vendor ATI and DeviceID 0x7249.
But no "displays" found attached to it, which is b.s.
Please please don't tell me i cannot use this graphics card in the octo-core MacPro?!

I am surprised .... I don't have (any ideas), so I don't know for sure
You know, that doesn't help or further things and puts out false ideas that there even might. Then I'll hear "but I read somewhere something."
Apple changed the firmware on 2008. That is well known and pretty obvious, and graphic cards have to follow suit.
Nvidia doesn't seem to know or follow ATI's path of using a "hybred" (for want of better term) EFD? ROM that works across EFI32 and EFI64. Been explained over and over, or if not explained, given as cause to why.
At least we have a few years before EFI128!
NVidia GeForce 7400 gfx card
Now that is very elusive.
The 7300GT works only in 2006-7 Mac Pro, which were dual processor / dual or quad-core, but all used EFI32; 667MHz FBDIMM; had 1333MHz front side bus; PCIe 1.0/1.1 (but not PCIe 2.0 that came out in 2008).
And with brand new 2009, DDR3, you graphic option is really between GTX 285 and ATI HD 4870 - forget the GT120 even as a viable option for most.

Can I put two ATI Radeon X1900 XT's into a MacPro?

Hi
We've just bought a MacPro, with 3 NVIDEA 7300 cards. Sadly it seems the 7300 does not support the apple DVI-Video adapter. Our system requires three dual link DVI ports supporting the adapter, so on face value we should be able achieve this by removing the 7300's and installing two ATI Radeon X1900 XT's instead.
The question is is it possible to put two ATI Radeon X1900 XT's into a MacPro? Has any one done this? or indeed does anyone know how to get the 7300's to recognize a DVPAL device such as video projector or analogue video monitor?
Cheers
Nick
MacPro Mac OS X (10.4.8)

PCI-E (Peripheral Component Interconnect-Express) is a newer implementation of PCI which uses a much faster physical-layer communications protocol than older PCI bus architectures.
Rather than using a bus as PCI did, PCI-E uses dedicated, unidirectional, point-to-point connections known as "lanes" to communicate with PCI-E devices.
The Mac Pro features four PCI-E 16-"lane" connectors on the main logic board. In PCI-E, these are known as "x16" slots. These can be used for PCI-E-compatible cards, like the ATI Radeon card that is available as a configure-to-order option in the Mac Pro.
PCI-E cards will work in slots that are at least as large as the card is. This means that the "x16" slots in the Mac Pro computer also supports "x1" and "x4" cards as well. However, all four slots cannot simultaneously support four cards that implement the same lane configuration. Only one slot actually has 16 lanes going to it—you can put a x16 card into a slot that is only using one lane and it will operate properly, but it will operate more slowly than the same card in a x4, x8 or x16 slot.
The Expansion Slot Utility, located in /System/Library/Core Services, allows you to configure the PCI-E expansion slots and how many lanes each slot will support, as illustrated below. This example shows a "x16" graphics card occupying the first slot, and the other slots are configured to support an "x1" card in slot two and "x4" cards in slots three and four. The example shows the other options available. When you have picked the appropriate configuration of slots to support your compliment of PCI-E cards, click the Save and Restart... button to implement the configuration.
http://docs.info.apple.com/article.html?artnum=304122
Michael

ATI Radeon X1900 XT only for MacPro?

I Just noticed this this morning at Apple's Online Store ( US )
"ATI Radeon X1900 XT Graphics Upgrade Kit US$ 399.00"
I wonder if this will work in the G5 with Dual Cores ( and Quad ) PCIe ?

Ok thanks Jewell, What a Bugger eh?
X800XT for PCI-X G5's and ATI Radeon X1900 XT for MacPro's and nothing for the PCI-E last generation G5's! (unless you BTO).
I have seen your posts here about the lack of video card upgrades for the Quad, and I feel for you ... it's got to be exasperating !!
It will not unfortunately. Its to do with the way
video cards are recognised by the host system and the
x1900 is for MacPro only.
However.
Joe Schorr has confirmed in these forums that ATI
will be releasing a dual-core G5 edition of the x1900
(?) card which would finally make this Apple's first
video upgrade card since the dual-core G5 (quads)
were launched in October 05. Way to go Apple...
I read your repost of it.
-Robert

Signal Problem MacPro 1.1 w/ATI Radeon X1900 XT

Before I run out an purchase a new video card wanted to run my issue by the forum. I have a MacPro 1.1 (early 2007) with a ATI Radeon X1900 XT card. When booting up recently my screen is blank, no signal. If I switch video ports it fires up.
Is this a video card issue or something else with the OS (running Mac OS X 10.6.6 (10J567))?
Would appreciate a little insight from the forum.
Thanks,
Koyangie

1. There was a replacement program that ended 1/31/2011 for some X1900
2. Any owner by know should have known and been doing a good deep cleaning for dust, and upping the system fans a tiny notch (900 rpm is quiet but more efficient) to keep more air circulating
3. While you can't directly measure GPU temps, you can with other sensors
4. Do you hear the video card fans or system fans working hard?
Poor design with the cooling chamber on X1900 made it a dust magnet and headache.

ATI Radeon X1900 XT driver for MacPro

I put an ATI Radeon X1900 XT for MacPro in my 2 x 3 GHz MacPro. It displays only 1280 x 800 on my 30" Cinema. Do I need to install a driver, and if so, where to get the driver since card did not come with CD and AMD site has not posted a driver?
2 x 3 GHz MacPro Mac OS X (10.4.8)

zspike --
You don't need drivers -- they're built in to the OS. However, it would be nice to use the ATi displays panel, so you can turn on various app-specific speed settings and features like full-screen antialiasing.
Now, version 4.5.9 of ATi Displays is a Universal Binary, but ATi in their infinite wisdom have made it so that it WILL NOT install on a Mac Pro, only a G5.
But there's a way around this:
http://forum.macbidouille.com/index.php?showtopic=199963
Have a look at post No. 8. Simply put the displays.app in your /Applications/Utilities folder, and run it from there. Runs no problem. I couldn't get the Prefs Pane to work, but all that does is launch the Displays.app
Have fun!

Crash with ATI Radeon X1900 XT and second HD display (DVI) ?

hi ! i have a realy tough one for you guys : since 3-4 days i've been getting this realy strange (and scary!) kernal panic screen / crashes / freeze with my macpro dual 2.66 with ati radeon X1900 xt.
the crashes keep coming while doing extensive work (video converting, renders) or just letting the macpro running doing nothing much all night long...
now this is what i found for now : if i disconect my 2nd display (samsung syncmaster 2493hm HD in DVI 1080p) it seem to be stable. when i reconnect it sometime it can run again with this 2nd display for a while but when i leave a render all night long the next morning it will be frozen, nothing on screen (all black).
after rebooting it get this crash report from the system :
Maccinachheeke-pabcapk cat0etiabies 0x00000000000000000000006:
6 ereerr--i oporgingngnkbeaachineck Maehik ne-a0h0h ck stat00t000000000 r0es0
reteattartPvvl Ili maaliceicdn mchk aiog eproMh
rekroi-MCpor reorrosg-:
porttMCrSTregt(i_MC 0xSTATUS(er40_S x20210(0x0nv0TalU00xx002in000iS10000002405)100l00U I0nva0M 0xS
IS(0x0A30:_M0U2(00ATU5S(2xx00200TA00000x00400000IAinv2li00lC
20IAA00200_inv0xid
0IA3: 3_d0000AT0)000000d)0000n00a00d000nA0v0l0d
I3S22_v4USi3SIA0411): 0400 0x0U0000020000 00100 00vl00
0 I0A3011CivAA32_SM_441SxTUTb0004100)000vb01001iA 00led 0I cva00 i e r cI:S(0xe0 1 ):(0 : 041e5)b x000b 800de:fix 4arrld
Mo MAA e8atr code inf 00: 0 0x00 St
00s00ode
spSccifsic codr
texr ccorre02sor:
0 8O4x0
r erder in orrmt n ded0000: 0x1rp0000Satus bitts:
b 0ts:4ssor PMroexce Chtsscorrupt, tconad:
e0x3re1cor,rtr epo:bl ed err: E0)roncirters0: 0
8ernc0ro,rrR2: 0xected error
CR3: 0x00e7a000, CR4: 0x000006e0
EAX: 0x24f9bed8, EBX: 0x1a6f198a, ECX: 0x1a6f198a, EDX: 0x004bc870
ESP: 0x24f9bebc, EBP: 0x24f9bf08, ESI: 0x00001e27, EDI: 0x035e1718
EFL: 0x00000006, EIP: 0x0019e9c0
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x439d58 : 0x128d0d (0x3cc65c 0x439d7c 0x131f95 0x0)
0x439d98 : 0x1a42cb (0x3d27fc 0x0 0x35e1718 0x12)
0x439f58 : 0x19c103 (0x439f70 0x0 0x0 0x0)
0x24f9bf08 : 0x135888 (0x1a6f164f 0x35e3d40 0x3f91084 0x2)
0x24f9bf58 : 0x1359c9 (0x13d8a2 0x0 0x0 0x19e23a)
0x24f9bf78 : 0x13da53 (0x13d8a2 0x0 0x0 0x0)
0x24f9bfc8 : 0x19b21c (0x0 0x0 0x19e0b5 0x4ebf4c0) Backtrace terminated-invalid frame pointer 0x0
Kernel version:
Darwin Kernel Version 8.11.1: Wed Oct 10 18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386
Model: MacPro1,1, BootROM MP11.005C.B04, 4 processors, Dual-Core Intel Xeon, 2.66 GHz, 2 GB
Graphics: ATI Radeon X1900 XT, ATY,RadeonX1900, PCIe, 512 MB
Memory Module: DIMM Riser A/DIMM 1, 512 MB, DDR2 FB-DIMM, 667 MHz
Memory Module: DIMM Riser A/DIMM 2, 512 MB, DDR2 FB-DIMM, 667 MHz
Memory Module: DIMM Riser B/DIMM 1, 512 MB, DDR2 FB-DIMM, 667 MHz
Memory Module: DIMM Riser B/DIMM 2, 512 MB, DDR2 FB-DIMM, 667 MHz
AirPort: spairportwireless_card_type_airportextreme (0x14E4, 0x87), Broadcom BCM43xx 1.0 (4.170.13.1)
Network Service: AirPort, AirPort, en2
PCI Card: ATY,RadeonX1900, Display, Slot-1
Serial ATA Device: ST3250820AS P, 232.89 GB
Parallel ATA Device: OPTIARC DVD RW AD-7170A
USB Device: USB2.0 Hub, Up to 480 Mb/sec, 500 mA
USB Device: Hub in Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 500 mA
USB Device: USB RECEIVER, Logitech, Up to 1.5 Mb/sec, 100 mA
USB Device: Apple Pro Keyboard, Mitsumi Electric, Up to 12 Mb/sec, 250 mA
FireWire Device: built-in_hub, unknown_value, Unknown
FireWire Device: GSA-5163D Super Multi DVD Rewriter, HL-DT-ST, Up to 400 Mb/sec
FireWire Device: My Book Device, WD, Up to 800 Mb/sec
here's my complete config if it can help :
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: 2 GB
Bus Speed: 1.33 GHz
Boot ROM Version: MP11.005C.B04
SMC Version: 1.7f8
ATI Radeon X1900 XT:
Chipset Model: ATY,RadeonX1900
Type: Display
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:
SyncMaster:
Resolution: 1920 x 1200 @ 60 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported
Television: Yes
S/M 955SL:
Resolution: 1280 x 1024 @ 75 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported
anyone ever see this problem ? at 1st it seem to be related to my ATI card... but i'm no expert so if anyone can understand part of the crash log let me know ! thanx !!
also forget to say : did all the full apple hardware test + tech tool pro test (app that come with apple care) and nothing was wrong, all ok.
+
francis.t
montreal
Message was edited by: francis.t

Are you really still running 10.6.3? you will need 10.6.5+ so do that and make a clone.
ATI 5770 from Apple Store - like 1000s of others have done and in the comments section on the store page.

After Effects 7 with ATI Radeon X1900 XT

Hi everyone,
I use Adobe After Effects 7 a lot and I'm not happy with my current machine (PowerPC G5 2x1.8GHZ, 2GB DDR SDRAM, ATI Radeon X800 XT), it is too slow to work smoothly when I have several layers and effects going on. Previewing the work on the timeline (OpenGL or Adaptative resolution) is painfully slow and takes on my nerves. I believe this is mainly due to my graphics card, and the fact is not 100% compatible with OpenGL on After effects.
I'm ready to upgrade with a Mac Pro 2.66 GHz Quad Xeon with ATI Radeon X1900 XT, but only if I'm going to enjoy a real improve with After Effects 7, as this is my main editing application right now.
Does anybody have experience with this configuration?
Thanks in advance for reading and replies!
PowerPC G5 2x1.8GHZ Mac OS X (10.4.7) 2GB DDR SDRAM, ATI Radeon X800 XT

I have this configuration, but sadly have had no time to play around with After Effects. AE's realtime playback capabilities are limited (especially when compared with something like Motion), so you're probably still going to be rendering to RAM a lot. I believe the OpenGL support is for things like anti-aliasing, blur, and blending modes -- so a faster video card may not automatically equal huge performance boost across the board. Four Xeon cores and a lot of RAM will help it a lot more (see exception below).
Also, AE 7 still has to run under Rosetta which results in a slower performance than if it was native. Also, be aware that there is a limit placed on all Rosetta processes that do not allow them to address more than 1.5GB of RAM combined. This will most likely limit your render speed and preview lengths. See this thread on Adobe's forums for more info:
http://www.creativecow.net/articles/jonesgraham/AE7_on_IntelMacPro/index.html
EDIT: The above link was to the performance comparisons, but not the original Adobe forum thread. Here it is:
http://www.adobeforums.com/cgi-bin/webx/.3bc2401b
However, if you read the thread, and follow the link in it, the author is seeing huge performance gains with AE7 on his MacPro 3GBs over his old dual G5 4.5GBs.
So most likely, you'll see a performance benefit from upgrading. And when an Intel native version of AE ships, things will really fly.

Please help: what options do we have other than ATI Radeon X1900 XT

I think my video card (ATI Radeon X1900 XT) is about to die and I'm trying to figure out what to replace it with. (I'm on a 1st gen MacPro, still on Tiger).
What I can't easily figure out from this site, however, is a list of alternative cards I could purchase that will fit in this machine. I gather from the ratings that the ATI X1900 has failed for just about everyone that has used it intensely. And I'd like to avoid buying the same one that is about to fail for me now, but how can I tell what my alternatives are and if they will fit in the slot and/or be compatible with my machine?
I have been to the Mac Pro spec area, and it lists these as the "build to order" options:
* ATI Radeon X1900 XT 512MB (two dual-link DVI)
* NVIDIA Quadro FX 4500 512MB (stereo 3D, two dual-link DVI)
* Two NVIDIA GeForce 7300 GT 256MB
* Three NVIDIA GeForce 7300 GT 256MB
* Four NVIDIA GeForce 7300 GT 256MB
are those the only cards I can choose from? Are there any other better options?
Forgive me if I sound like a totally idiot. I'm just trying to learn...

You should visit Bare Feats and see the various reviews and benchmarks. You have several options now available besides the ones that came originally with your model. There is now an NVidia 8800 card in a version for pre-2008 MPs, the ATI 2600, and the new ATI 3870 just released. You can learn more at Bare Feats and by searching the MP forums.
You have posted this topic in the MacBook Pro forum which is the wrong forum for your question.

Changed Graphics Card ATI Radeon X1900 XT

i changed my graphics card from ati radeon 5770 hd to ATI Radeon X1900 XT, in mac pro 5,1 its showing only 7MB VRAM

From > http://www.everymac.com/systems/apple/mac_pro/faq/mac-pro-default-graphics-cards -dvi-dual-link-mini-displayport.html
Mac Pro Subfamily
Video Card Options
VRAM
Ports
Original
ATI Radeon X1900 XT
512 MB GDDR3
2 DL DVI
Mac Pro Subfamily
Default Video Card
VRAM
Ports
Mid-2010
ATI Radeon HD 5770
1 GB GDDR5
2 Mini DP
1 DL DVI
Mid-2012
ATI Radeon HD 5770
1 GB GDDR5
2 Mini DP
1 DL DVI
looks a little like a downgrade to me - the article doesn't really deal with downgrading to the 'original' MacPro (?wonderng why? - 5770 shot? and X1900 lying around?)
Never tried to downgrade... so I'm out.
ÇÇÇ

Avid and ati radeon x1900

hello, i was wondering if anyone out there has a macpro with a ati radeon x1900 graphiccard running avid. i am not sure if i should buy the radeon card, i think im just scared to make the commitment, afraid the card will not work with my avid. i would appreciate any help...
thanks

I am surprised .... I don't have (any ideas), so I don't know for sure
You know, that doesn't help or further things and puts out false ideas that there even might. Then I'll hear "but I read somewhere something."
Apple changed the firmware on 2008. That is well known and pretty obvious, and graphic cards have to follow suit.
Nvidia doesn't seem to know or follow ATI's path of using a "hybred" (for want of better term) EFD? ROM that works across EFI32 and EFI64. Been explained over and over, or if not explained, given as cause to why.
At least we have a few years before EFI128!
NVidia GeForce 7400 gfx card
Now that is very elusive.
The 7300GT works only in 2006-7 Mac Pro, which were dual processor / dual or quad-core, but all used EFI32; 667MHz FBDIMM; had 1333MHz front side bus; PCIe 1.0/1.1 (but not PCIe 2.0 that came out in 2008).
And with brand new 2009, DDR3, you graphic option is really between GTX 285 and ATI HD 4870 - forget the GT120 even as a viable option for most.

Nvidia GeForce 7300 GT and ATI Radeon X1900 XT

I have a Mac Pro 2,1 running 10.6.1 and BootCamp.
I had a Nvidia GeForce 7300 GT video card in it and it ran well under BootCamp.
I installed a ATI Radeon X1900 XT.
Under BootCamp the 2 cards seem incompatible, with an error message that the driver on the Nvidia card has been disables due to an incompatibility with the other card.
Is there a solution for this?
If I wanted 2 cards inside would they both need to be the ATI's or Nvidia's?
Thanks

Hi I would maybe get a Apple Upgrade Kit the GT 120 is 512MB's & dose not use all 16 lanes as it like to make you think & will work on 2006 Mac Pro's at $149.00 I would say if you just want more displays get two & eBay your old cards. Please know if you game you will want more power but if only for more displays this 1 slot card is great.
NVIDIA GeForce GT 120 Graphics Upgrade Kit for Mac Pro (early 2009)
View all Questions
It as well as the much better 4870 both work with the Mac Pro 1,1 & 2,1
NVIDIA GeForce GT 120 Graphics Upgrade Kit for Mac Pro (early 2009)
The NVIDIA GeForce GT 120 includes 512MB of GDDR3 memory, uses the PCI Express 2.0 interface, and includes one Mini DisplayPort and one dual-link DVI port.
Learn more Questions & Answers
2 Questions + 2 Answers
Based on 11 reviews
Write a review
$149.00
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Overview
The NVIDIA GeForce GT 120 with 512 MB of GDDR3 memory delivers excellent all-around performance whether your playing games or dealing with creative and scientific applications. With up to four NVIDIA GeForce GT 120 graphics cards installed, a Mac Pro can support up to eight displays simultaneously.
NVIDIA GeForce GT 120 includes two video ports: one Mini DisplayPort and one dual-link DVI port. This allows you to connect both the 24-inch Apple LED Cinema Display or another Mini DisplayPort-based display, and a DVI-based display such as the 30-inch Apple Cinema HD Display. Display adapters are available to connect VGA displays.
Good Luck man
Thomas

ATI Radeon X1900 worth it for only FCP and Color?

Hello,
I've been looking around these posts for a while and I can't seem to find this specific answer, so I apologize if my question has been asked already.
I am looking to purchase a MacPro tower. I don't use Motion. I don't play video games. I don't need 8 zillion giant monitors. I intend to use the computer mainly for Final Cut Pro 6.0 and probably a fair amount of Color as well.
With this being the case, what are the benefits of the
ATI Radeon X1900 XT 512MB Graphics Card, over the
NVIDIA GeForce 7300 GT 256MB Graphics Card? Is it really worth the money? I've seen some posts that say you won't see a difference in FCP, but is this also true for Color? And if so, what exactly will the difference be?
Thanks,

Here's what they said at the Color board...
With anything less than an ATI x1900...you may experience issues such as lack of realtime playback, missing support for 10-bit images and 2K frame sizes, no float support for your grade settings.
For this version of Color, ATI is the way to go. I wouldn't go so far as to say an Nvidia card gives you a crippled version of the program, but it's close.
http://discussions.apple.com/thread.jspa?messageID=4611284&#4611284
http://discussions.apple.com/thread.jspa?messageID=4672792&#4672792
http://discussions.apple.com/thread.jspa?messageID=4620097&#4620097

Alternatives to ATI Radeon X1900 XT 512 MB

Hi Guys,
I'm pretty sure my ATI Radeon X1900 XT 512 MB graphics card has failed...
I run MacPro1,1 (2008) Dual-Core Intel Xeon with 2 x 23-inch DVI Apple Cinema Displays. Tonight only one of the screens would wake from sleep - the screen in port 2.
I've tried...
1. Swapping the DVI cables, this results in the non waking screen waking and the waking screen, not waking.
2. Tried running just one screen off DVI port 1 and nothing happened, blank screen but power light on.
3. Tried running same screen off DVI port 2 and still nothing happened, blank screen but power light on.
To re-cap - None of the DVI ports work on their own and only Port 2 works when both screens are plugged in.
So... is there any other tests or checks I can do to confirm 100% it's a faulty card? I've unplugged and done the SMC reset.
Secone part to this - if the card is shot can anyone recommend an upgrade to the ATI Radeon X1900 XT 512 MB?
Thanks
Pete

You could use a Mini-DisplayPort to DVI adaptor on one of the ports, I would think. Otherwise, you don't have two many choices. You might look for a used ATI 4870, Mac Edition model. It's performance will be similar to the 5770 since the 2006 MP only has PCI-e 1.0 slots so the 5770 can't take advantage of it's capabilities if installed in a PCI-e 2.0 slot.
Other cards that will work include the older Nvidia 8800 GT for Mac. You must be sure with these other cards that you look for the ones that are compatible with a Mac Pro. These were the ones made specifically for Apple. Non-Apple cards will not work unless you have the hardware, ability, and knowledge to re-flash ROMs.

Is the Flash player GPU acceleration supported on the ATI Radeon X1900 XT?

Anyone know if Flash player 11.1.102.55 GPU acceleration is supported on the ATI Radeon X1900 XT? I didn't see it explicitly listed in the unsupported hardware list (http://kb2.adobe.com/cps/921/cpsid_92103.html). The card is not displaying any of the stage 3D content unless I disable hardware acceleration. I get the same results whether I use Firefox, Chome, or Safari.
I'm on a Mac, my system specs are;
Processor 2 x 3 GHz Dual-Core Intel Xeon
Memory 2 GB 667 MHz DDR2 FB-DIMM
Graphics ATI Radeon X1900 XT 512 MB
Software Mac OS X Lion 10.7.2 (11C74)
If I need to I'll replace the card but I want to make sure it's the issue before I do.
Thanks in advance for any insight.

I'm wondering the same thing. I have an X1950 pro and am trying to get it to help out with youtube videos.
The latest X**** driver was released in 2010, and the original driver at the very earliest March 2009. Both the X1900XT and X1950 Pro are not listed on that list.
However, I do recall feeling Flash player 11 being slightly faster than Flash 10 when I first installed it. Flash still didn't become "10x" faster and 720p through 1080p video certainly still isn't smooth.

MacPro, ATI Radeon X1900 XT + dual Dell 2407WFP

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