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Member Since 23 Jan 2009
Offline Last Active Aug 14 2014 12:29 AM

Topics I've Started

GTX 9800+ strangeness in 10.7.3

21 February 2012 - 11:25 PM

I did a new install of Lion on a Gigabyte GA-EP45-UD3P with an EVGA 9800 GTX+ 512mb. I have a user DSDT and used ##### to perform the install.

At first glance everything seemed to be working fine. With the GraphicsEnabler key set to yes, the DVD player worked fine, and the card showed up OK in the system prefences pane.

I then tried to run cinebench and it would not start, it said it could not find the IDD_DISCLAIMER.res file. I can run the same version of cinebench on my other 10.7.3 rig without a problem. I re-downloaded cinebench and it comes up with the same error. I played with the permissons, to no end.

I then thought maybe there is a problem and QL/QE acceleration may not be working right. So I tried using an EFI string for my card from http://aquamac.probo...ack1&thread=509. When I did this things booted OK, but then the monitor went blank after the gray boot screen. So I went back to what I had before with the GraphicsEnabler set to yes and no EFI string.

Now is where things get strange. I hooked up the same rig to my LCD TV, which is where I want to use it. I am using a DVI-HDMI passive cable. I get no video on the LCD TV, I try just the monitor and its fine but as soon as I plug in the LCD, the system hangs and won't respond. I tried swapping connections, same results.

I then try my old leopard install, which I had an EFI string for the card. It works fine, both monitor and LCD-TV. So I know the card can output properly to the LCD TV and the monitor.

I had a lot of problems getting connectors to work on my ATI 6870 which is in my other rig. I had to edit the ATIController framebuffer to get both DVI connectors working with acceleration.

So my questions are:

1. Is there a problem with acceleration with GraphicsEnabler=yes which is causing cinebench to not start?
2. Is the EFI string method I'm using not right? I'm doing it under 10.7.3.
3. Is the LCD TV not working a framebuffer issue?

My goal for this rig is to use the LCD-TV as a monitor by itself and to have QL/QE acceleration.


HD 6870 DVI Connectors SOLVED

05 February 2012 - 09:27 PM

I have a Gigabyte HD6870 1GB video card and I am running 10.7.3. The card has a DVI-I, DVI-D, HDMI-A, and 2 mini DP connectors on it.

I've been trying to get both of the DVI connectors to work with GraphicsEnabler=Yes. I can get them both to work with GraphicsEnabler=No and AtiConfig=Bulrushes. I can get the HDMI port to work with GraphicsEnabler=Yes as well. I don't want to use the HDMI port because it limits the resolution settings on the second monitor. I can't test the mini DP ports because I don't have the adapter. I've read from some of the forums that it is not possible and to buy an adapter. No one really says why.

Since I know the card hardware is capable of it, and I can operate both displays under Windows 7 and without GraphicsEnabler I did more research.

I tried all of the frame buffers and none of them worked with the 2 displays. I then found the following threads and was hopeful.


I followed the threads and modfied a couple of personalities. I have not been able to get both working. The closest I have got is both displays show up in system info, but the 2nd display has no video signal. I've tried detect displays, unplugging / plugging in. I am working in 64 bit.

Some info on the card:

Output from radeon_bios_decode:

SubsystemVendorID: 0x1458 SubsystemID: 0x21fa
IOBaseAddress: 0x0000
Filename: R687OGD.F20
BIOS Bootup Message: GV-R687OC-1GD/F20									  
PCI ID: 1002:6738
Connector at index 0
Type [@offset 44255]: DisplayPort (10)
Encoder [@offset 44259]: INTERNAL_UNIPHY2 (0x21)
i2cid [@offset 44383]: 0x90, OSX senseid: 0x1
Connector at index 1
Type [@offset 44265]: DisplayPort (10)
Encoder [@offset 44269]: INTERNAL_UNIPHY2 (0x21)
i2cid [@offset 44410]: 0x91, OSX senseid: 0x2
Connector at index 2
Type [@offset 44275]: HDMI-A (11)
Encoder [@offset 44279]: INTERNAL_UNIPHY1 (0x20)
i2cid [@offset 44437]: 0x93, OSX senseid: 0x4
Connector at index 3
Type [@offset 44285]: DVI-D (3)
Encoder [@offset 44289]: INTERNAL_UNIPHY1 (0x20)
i2cid [@offset 44464]: 0x95, OSX senseid: 0x6
Connector at index 4
Type [@offset 44295]: DVI-I (2)
Encoder [@offset 44299]: INTERNAL_UNIPHY (0x1e)
i2cid [@offset 44501]: 0x94, OSX senseid: 0x5
Connector at index 5
Type [@offset 44305]: DVI-I (2)
Encoder [@offset 44309]: INTERNAL_KLDSCP_DAC1 (0x15)
i2cid [@offset 44501]: 0x94, OSX senseid: 0x5

Output from redsock_bios_decode:

R687OGD.F20 :
Subsystem Vendor ID: 1458
	   Subsystem ID: 21fa
Object Header Structure Size: 407
Connector Object Table Offset: 52
Router Object Table Offset: 0
Encoder Object Table Offset: 12a
Display Path Table Offset: 12
Connector Object Id [19] which is [DISPLAY_PORT]
encoder obj id [0x21] which is [INTERNAL_UNIPHY2 (osx txmit 0x12 [duallink 0x2] enc 0x4)] linkb: false
Connector Object Id [19] which is [DISPLAY_PORT]
encoder obj id [0x21] which is [INTERNAL_UNIPHY2 (osx txmit 0x22 [duallink 0x2] enc 0x5)] linkb: true
Connector Object Id [12] which is [HDMI_TYPE_A]
encoder obj id [0x20] which is [INTERNAL_UNIPHY1 (osx txmit 0x11 [duallink 0x1] enc 0x2)] linkb: false
Connector Object Id [3] which is [DVI_D]
encoder obj id [0x20] which is [INTERNAL_UNIPHY1 (osx txmit 0x11 [duallink 0x1] enc 0x2)] linkb: false
Connector Object Id [2] which is [DVI_I]
encoder obj id [0x1e] which is [INTERNAL_UNIPHY (osx txmit 0x10 [duallink 0x0] enc 0x0)] linkb: false
Connector Object Id [2] which is [DVI_I]
encoder obj id [0x15] which is [INTERNAL_KLDSCP_DAC1 (osx txmit 0x00 enc 0x10?)] linkb: false

You can see that from the redsock output the HDMI and DVI-D connector share the same transmitter and encoder. I did not think that was going to be a problem since I'm not using the HDMI port. The way I see it if something was plugged in to the HDMI it would turn off the DVI-D and vice versa. Plus they have different senseid numbers.

Here is my current framebuffer, which is a modified Gibba.

0000000: 0004 0000 0403 0000 0001 0000 1204 0101  ................
0000010: 0004 0000 0403 0000 0001 0000 2205 0502  ............"...
0000020: 0008 0000 0402 0000 0001 0000 2205 0304  ............"...
0000030: 0400 0000 0400 0000 0001 0000 1102 0406  ................
0000040: 0400 0000 1400 0000 0001 0000 1000 0605  ................

Connector 0 mini DP
Connector 1 mini DP
Connector 2 HDMI-A
Connector 3 DVI-D
Connector 4 DVI-I

I tested performance under Duckweed using Cinebench and compared to Gibba. Both where very close, Gibba was slightly better. Duckweed is what the system defaults to with GraphicsEnabler=Yes. I took the Duckweed personality since it matched except for the DVi-D connector and used it in Gibba which has the correct number of connectors. I used IOregistryExplorer to determine the connector type, and control flags for the 2 DVI connectors under GraphicsEnabler=No.

The above was the last iteration, I tried changing the transmitter/encoder for the HDMI connector because it was the same as the DVI-D.

Like I said I've tried a lot of combinations and none have worked.

Before I go out and buy the adapter I am wondering:
  • If it is not possible to use both DVI connectors with GraphicsEnabler=yes why?
  • Is there a way to determine the proper hotplug ID numbers? Changing these sometimes causes the mouse pointer to lag. I've read that in certain cases the hotplug id needs to match the sense id of a neighbooring connector so that if one is plugged in the other will turn off.
  • Does the framebuffer personality have to have the correct number of connectors that the card has? If I am only using 2 connectors is it possible just to have 2 entries in the framebuffer personality and extra ones for the unused connectors?
Thanks for any info.

SUCCESS SUCCESS :guitar: :guitar:

See FishCow post below. As I said in my response I thought I tried VCH888 Gibba frame buffer but I must not have....

Here is VCH888's edited framebuffer. Note it appears that the disk offset is for 32 bit.

Personality: Gibba
ConnectorInfo count in decimal: 5
Disk offset in decimal 523928
0000000 00 04 00 00 04 03 00 00 00 01 00 00 12 04 04 01 ---- DP 1
0000010 00 04 00 00 04 03 00 00 00 01 00 00 22 05 05 02 ---- DP 2
0000020 00 08 00 00 04 02 00 00 00 01 00 00 11 02 06 04 ---- HDMI
0000030 00 02 00 00 14 02 00 00 00 01 00 00 00 00 03 05 ---- DVI 1
0000040 04 00 00 00 04 02 00 00 00 01 00 00 11 02 01 06 ---- DVI 2
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