1 2 3 5 Previous Next 66 Replies Latest reply: Apr 4, 2014 6:00 PM by dehuan RSS

How to get Full Range RGB from Intel HD Graphics?

Lillevold Community Member
Currently Being Moderated

Has anyone found the trick to get Intel HD Graphics 3000 (on a SandyBridge 2500K) to output full range RGB to a full range capable digital television?

 

With my TV, it is impossible to get the iGPU to output Full range RGB. Both "Full" and "Limited" settings look the same, flat washed out. I tried connecting both directly to the TV and via the my Onkyo TX-SR605.

 

Then I went back to my ATI card, changed it from Full to Limited RGB, and the colors there now looked just as flat and washed out as the iGPU always outputs. My TV is a Samsung DLP 50A650.

 

I have also tried the various tricks found in this thread on avsforum, incl. downgrading to driver version 2509, but nothing works.

 

It is strange Intel can't fix such a serious quality problem, which ATI, NVIDIA, Sony(PS3) and Microsoft(Xbox360) all nailed down years ago (by providing a working Full range option). I have had to use a discrete ATI card to get decent colors, while the otherwise high quality Intel GPU should be perfectly capable of providing this.

 

Win7 x64, latest Intel HD Graphics Driver 2696.

  • 1. Re: How to get Full Range RGB from Intel HD Graphics?
    allan_intel Community Member
    Currently Being Moderated

    Hi there!

     

    Intel is currently researching on this issue but we need the graphics report generated within graphics control panel.

    See the following URL to get the graphics report:

     

    http://http://www.intel.com/support/graphics/sb/cs-009476.htm


    Thanks

    Allan

  • 2. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Hi Allan, Thanks for your reply. The requested info is as follows:

     

    Intel(R) HD Graphics 3000

     

    Report Date: 5/15/2012

    Report Time[hh:mm:ss]: 16:06:38

    Driver Version: 8.15.10.2696

    Operating System: Windows 7  Service Pack 1(6.1.7601)

    Default Language: English (United States)

    DirectX* Version: 11.0

    Physical Memory: 8089 MB

    Minimum Graphics Memory: 64 MB

    Maximum Graphics Memory: 1696 MB

    Graphics Memory in Use: 90 MB

    Processor: Intel64 Family 6 Model 42 Stepping 7

    Processor Speed: 3300 MHz

    Vendor ID: 8086

    Device ID: 0112

    Device Revision: 09

     

    *   Processor Graphics Information   *

     

     

     

     

    Processor Graphics in Use: Intel(R) HD Graphics 3000

    Video BIOS: 2124.0

    Current Graphics Mode: 1920 by 1080

     

    *   Devices Connected to the Graphics Accelerator   *

     

    Active Digital Televisions: 1

      * Digital Television *

     

    Monitor Name: Generic PnP Monitor

    Display Type: Digital

    Gamma Value: 2.2

    DDC2 Protocol: Supported

     

    Maximum Image Size:

    Horizontal: 62.99 inches

    Vertical: 35.43 inches

     

    Monitor Supported Modes:

    640 by 480 (60 Hz)

    800 by 600 (60 Hz)

    1024 by 768 (60 Hz)

    1280 by 1024 (60 Hz)

    1360 by 768 (60 Hz)

    1920 by 1080 (60 Hz)

     

    Display Power Management Support:

    Standby Mode: Not Supported

    Suspend Mode: Not Supported

    Active Off Mode: Not Supported

     

    Raw EDID:

    00 FF FF FF FF FF FF 00 3D CB 61 07 00 00 00 00

    00 11 01 03 80 A0 5A 78 0A AE A1 A6 54 4C 99 26

    14 50 54 21 08 00 81 80 01 01 01 01 01 01 01 01

    01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

    45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30

    40 70 36 00 40 84 63 00 00 1E 00 00 00 FC 00 54

    58 2D 53 52 36 30 35 0A 20 20 20 20 00 00 00 FD

    00 17 3D 1A 44 11 00 0A 20 20 20 20 20 20 01 D1

    02 03 37 F1 48 90 04 05 03 20 22 0F 24 35 09 7F

    07 0F 7F 07 17 07 50 3F 06 C0 57 06 00 5F 7E 01

    67 5E 00 83 4F 00 00 6C 03 0C 00 32 00 B8 2D C0

    00 00 00 00 E2 00 0F 01 1D 00 72 51 D0 1E 20 6E

    28 55 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16

    20 58 2C 25 00 40 84 63 00 00 9E 8C 0A D0 8A 20

    E0 2D 10 10 3E 96 00 40 84 63 00 00 18 00 00 00

    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 43

     

    * Other names and brands are the property of their respective owners. *

  • 3. Re: How to get Full Range RGB from Intel HD Graphics?
    Zoomer88 Community Member
    Currently Being Moderated

    Hello. I have exactly the same problem on two different systems (one is ultrabook on core i3 and another is a desktop pc on i7). I was active in another topic. Just to help the cause. This is from the desktop pc: (by the way the resolution data is extremely weird. The 46' samsung tv is connected to the pc through Sony AVR. A lot more wider choice is available for me to select from within the driver).

     

    Intel(R) HD Graphics 3000

     

     

     

     

    Report Date: 5/25/2012

    Report Time[hh:mm:ss]: 17:56:38

    Driver Version: 8.15.10.2656

    Operating System: Windows 7 Service Pack 1(6.1.7601)

    Default Language: English (United States)

    DirectX* Version: 11.0

    Physical Memory: 8096 MB

    Minimum Graphics Memory: 64 MB

    Maximum Graphics Memory: 4048 MB

    Graphics Memory in Use: 90 MB

    Processor: Intel64 Family 6 Model 42 Stepping 7

    Processor Speed: 3502 MHz

    Vendor ID: 8086

    Device ID: 0122

    Device Revision: 09

     

     

     

     

    * Processor Graphics Information *

     

     

    Processor Graphics in Use: Intel(R) HD Graphics 3000

    Video BIOS: 2119.0

    Current Graphics Mode: 1920 by 1080

     

     

     

     

    * Devices Connected to the Graphics Accelerator *

     

     

    Active Digital Televisions: 1

    * Digital Television *

     

     

    Monitor Name: Generic PnP Monitor

    Display Type: Digital

    Gamma Value: 2,2

    DDC2 Protocol: Supported

     

     

    Maximum Image Size:

    Horizontal: 06,30 inches

    Vertical: 03,54 inches

     

     

    Monitor Supported Modes:

    640 by 480 (60 Hz)

    1920 by 540 (50 Hz)

    1920 by 1080 (60 Hz)

     

     

     

    Display Power Management Support:

    Standby Mode: Not Supported

    Suspend Mode: Not Supported

    Active Off Mode: Not Supported

     

     

    Raw EDID:

    00 FF FF FF FF FF FF 00 4D D9 01 4C 01 01 01 01

    0A 12 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26

    0F 50 54 20 00 00 01 01 01 01 01 01 01 01 01 01

    01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

    45 00 A0 5A 00 00 00 1E 01 1D 80 D0 72 1C 16 20

    10 2C 25 80 A0 5A 00 00 00 9E 00 00 00 FC 00 53

    4F 4E 59 20 41 56 41 4D 50 0A 20 20 00 00 00 FD

    00 18 4B 1A 51 17 00 0A 20 20 20 20 20 20 01 A9

    02 03 49 F5 4B 90 1F 04 13 05 14 03 0F 12 1E 20

    32 61 7E 00 65 7E 00 67 1E 00 59 7E 01 5D 7E 01

    5F 1E 01 32 09 7F 07 0D 7F 07 0F 7F 07 15 07 55

    3D 1F C0 57 06 00 83 5F 00 00 67 03 0C 00 23 00

    B8 2D E2 00 0F E3 05 03 01 01 1D 00 72 51 D0 1E

    20 6E 28 55 00 A0 5A 00 00 00 1E 01 1D 00 BC 52

    D0 1E 20 B8 28 55 40 A0 5A 00 00 00 1E 01 1D 80

    18 71 1C 16 20 58 2C 25 00 A0 5A 00 00 00 9E 03

     

     

    * Other names and brands are the property of their respective owners. *

  • 4. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Hi Zoomer88, You also have a Samsung TV. Maybe this is a common problem for all Samsung TVs connected to  Intel GPUs? Fortunately I had room for a discrete ATI video card in my new HTPC to resolve this "showstopper" problem. I had originally planned on relying solely on internal graphics. I am glad I did not, or I would have had to rebuild with a bigger case. -Karl

  • 5. Re: How to get Full Range RGB from Intel HD Graphics?
    Zoomer88 Community Member
    Currently Being Moderated

    Hey Lillevold. It might very well be a problem with Samsung TVs, though I'm not entirely sure. My pc is all-round since TV hangs over my monitors and the sofa is situated on the opposite wall. So if I want to watch movies or tv shows, I just roll away my chair and jump on to the sofa. So yeah, I do have a discrete videocard in my PC.

     

    The only problem is that it is nVidia. And the videocards of that company (even flagship model ) have rather poor hdmi port. They're able to stream video content but the bit-streaming of the encoded lossless sound formats isn't supported (I'm talking about DTS-MA and Dolby TrueHD). Intel and ATI on the other hand don't have this kind of problem.

     

    Why I am telling this is that I found a workaround in the TV settings. You might want to try it too. Mind you, it IS a workaround since the picture will be degraded in quality anyway (the pc will stream the same limited RGB) and it would be better if Intel came with fix to that issue.

     

    Navigate to Menu - Picture - Picture Options - Set HDMI Black Level to LOW (or the other way around, I heard that in some Samsung TVs this setting is upside-down). You'll get your proper blacks back. This is suitable only for sources which stream limited color content.

  • 6. Re: How to get Full Range RGB from Intel HD Graphics?
    Marco Vuano Community Member
    Currently Being Moderated

    I can confirm this issue is not related only to Samsung TVs at all. I have an LG TV monitor and an HP notebook with Intel HD Graphics 3000 and Windows 7 Home Premium at 64 bit and only have a limited RGB quantization range (16-235) output through HDMI. Banding is very evident in gray gradient test and the only way of having full black is to set the HDMI balck level to "Low" on the TV monitor (this of course doesn't solve the banding issues). With the old 2476 driver shipped with the notebook the "Quantization Range" option set to "Full" didn't work and with the new 2761 driver there is not even the "Quantization Range" option, but rather an "YCbCr" option. Setting the output to YCbCr doesn't solve the problem, as expected. When using the iGPU in Ubuntu 12.04 at 64 bit, on the other hand, the Full Range RGB is output through the HDMI port, the full black is reached even when the HDMI Black Level is set to "High" on the tv monitor and banding is not evident.

     

    Version 2476 report:

    Intel(R) HD Graphics 3000

     

     

     

    Report Date:            6/15/2012

    Report Time[hr:mm:ss]:        2:27:43

    Driver Version:            8.15.10.2476

    Operating System:        Windows 7  Service Pack 1(6.1.7601)

    Default Language:        Italian (Italy)

    DirectX* Version:        10.1

    Physical Memory:        6091 MB

    Minimum Graphics Memory:    32 MB

    Maximum Graphics Memory:    3860 MB

    Graphics Memory in Use:        139 MB

    Processor:            Intel64 Family 6 Model 42 Stepping 7

    Processor Speed:        2394 MHz

    Vendor ID:            8086

    Device ID:            0116

    Device Revision:        09

     

     

     

    *   Processor Graphics Information   *

     

     

    Processor Graphics in Use:        Intel(R) HD Graphics 3000

    Video BIOS:            2089.0

    Current Graphics Mode:        1920 by 1080

     

     

     

    *   Devices Connected to the Graphics Accelerator   *

     

     

    Active Digital Televisions: 1

    Non Active Notebook Displays: 1

        *    Digital Television    *

     

     

    Monitor Name:            Monitor generico Plug and Play

    Display Type:            Digital

    Gamma Value:            2,2

    DDC2 Protocol:            Supported

     

     

    Maximum Image Size:

    Horizontal:            20,87 pollici

    Vertical:            11,81 pollici

     

     

    Monitor Supported Modes:

    640 by 480 (60 Hz)

    640 by 480 (75 Hz)

    720 by 400 (70 Hz)

    800 by 600 (75 Hz)

    800 by 600 (60 Hz)

    832 by 624 (75 Hz)

    1024 by 768 (75 Hz)

    1024 by 768 (70 Hz)

    1024 by 768 (60 Hz)

    1152 by 864 (75 Hz)

    1280 by 800 (60 Hz)

    1280 by 1024 (60 Hz)

    1280 by 1024 (75 Hz)

    1280 by 720 (60 Hz)

    1400 by 1050 (60 Hz)

    1440 by 900 (60 Hz)

    1600 by 900 (60 Hz)

    1680 by 1050 (60 Hz)

    1920 by 1080 (60 Hz)

     

     

    Display Power Management Support:

    Standby Mode:            Supported

    Suspend Mode:            Supported

    Active Off Mode:        Supported

     

     

    Raw EDID:

    00 FF FF FF FF FF FF 00 1E 6D AE 60 01 01 01 01

    01 16 01 03 80 35 1E 78 EA E2 95 A2 55 4F 9F 26

    11 50 54 A5 6F 00 71 4F 81 C0 81 00 81 80 95 00

    90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C

    45 00 13 2B 21 00 00 1A 21 39 90 30 62 1A 27 40

    68 B0 36 00 13 2B 21 00 00 1C 00 00 00 FD 00 38

    4B 1E 53 0F 00 0A 20 20 20 20 20 20 00 00 00 FC

    00 4D 32 33 35 32 44 0A 20 20 20 20 20 20 01 EA

    02 03 21 F1 4E 84 05 03 02 20 22 10 11 13 12 14

    1F 07 16 26 15 07 50 09 07 07 66 03 0C 00 10 00

    80 01 1D 00 72 51 D0 1E 20 38 88 15 00 56 50 21

    00 00 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 56

    50 21 00 00 9E 01 1D 80 D0 72 1C 16 20 10 2C 25

    80 C4 8E 21 00 00 9E 02 3A 80 D0 72 38 2D 40 10

    2C 45 20 06 44 21 00 00 1E 02 3A 80 18 71 38 2D

    40 58 2C 45 00 56 50 21 00 00 1E 00 00 00 00 CE

     

     

        *    Built-in Display    *

     

     

    Monitor Name:            Monitor generico Plug and Play

    Display Type:            Digital

    Gamma Value:            2,2

    DDC2 Protocol:            Supported

     

     

    Maximum Image Size:

    Horizontal:            13,39 pollici

    Vertical:            07,48 pollici

     

     

    Monitor Supported Modes:

    1366 by 768 (60 Hz)

     

     

    Display Power Management Support:

    Standby Mode:            Not Supported

    Suspend Mode:            Not Supported

    Active Off Mode:        Not Supported

     

     

     

    * Other names and brands are the property of their respective owners. *

     

     

    Version 2761 report:

    Intel(R) HD Graphics 3000

     

     

     

     

    Report Date:            6/18/2012

    Report Time[hh:mm:ss]:        23:05:06

    Driver Version:            8.15.10.2761

    Operating System:        Windows 7  Service Pack 1(6.1.7601)

    Default Language:        Italian (Italy)

    DirectX* Version:        11.0

    Physical Memory:        6091 MB

    Minimum Graphics Memory:    32 MB

    Maximum Graphics Memory:    1696 MB

    Graphics Memory in Use:        199 MB

    Processor:            Intel64 Family 6 Model 42 Stepping 7

    Processor Speed:        2394 MHz

    Vendor ID:            8086

    Device ID:            0116

    Device Revision:        09

     

     

     

     

    *   Processor Graphics Information   *

     

     

    Processor Graphics in Use:        Intel(R) HD Graphics 3000

    Video BIOS:            2089.0

    Current Graphics Mode:        1920 by 1080

     

     

     

     

    *   Devices Connected to the Graphics Accelerator   *

     

     

    Active Digital Televisions: 1

    Non Active Notebook Displays: 1

        *    Digital Television    *

     

     

    Monitor Name:            Monitor generico Plug and Play

    Display Type:            Digital

    Gamma Value:            2,2

    DDC2 Protocol:            Supported

     

     

    Maximum Image Size:

    Horizontal:            20,87 pollici

    Vertical:            11,81 pollici

     

     

    Monitor Supported Modes:

    640 by 480 (60 Hz)

    640 by 480 (75 Hz)

    720 by 400 (70 Hz)

    800 by 600 (75 Hz)

    800 by 600 (60 Hz)

    832 by 624 (75 Hz)

    1024 by 768 (75 Hz)

    1024 by 768 (70 Hz)

    1024 by 768 (60 Hz)

    1152 by 864 (75 Hz)

    1280 by 800 (60 Hz)

    1280 by 1024 (60 Hz)

    1280 by 1024 (75 Hz)

    1280 by 720 (60 Hz)

    1400 by 1050 (60 Hz)

    1440 by 900 (60 Hz)

    1600 by 900 (60 Hz)

    1680 by 1050 (60 Hz)

    1920 by 1080 (60 Hz)

     

     

     

    Display Power Management Support:

    Standby Mode:            Supported

    Suspend Mode:            Supported

    Active Off Mode:        Supported

     

     

    Raw EDID:

    00 FF FF FF FF FF FF 00 1E 6D AE 60 01 01 01 01

    01 16 01 03 80 35 1E 78 EA E2 95 A2 55 4F 9F 26

    11 50 54 A5 6F 00 71 4F 81 C0 81 00 81 80 95 00

    90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C

    45 00 13 2B 21 00 00 1A 21 39 90 30 62 1A 27 40

    68 B0 36 00 13 2B 21 00 00 1C 00 00 00 FD 00 38

    4B 1E 53 0F 00 0A 20 20 20 20 20 20 00 00 00 FC

    00 4D 32 33 35 32 44 0A 20 20 20 20 20 20 01 EA

    02 03 21 F1 4E 84 05 03 02 20 22 10 11 13 12 14

    1F 07 16 26 15 07 50 09 07 07 66 03 0C 00 10 00

    80 01 1D 00 72 51 D0 1E 20 38 88 15 00 56 50 21

    00 00 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 56

    50 21 00 00 9E 01 1D 80 D0 72 1C 16 20 10 2C 25

    80 C4 8E 21 00 00 9E 02 3A 80 D0 72 38 2D 40 10

    2C 45 20 06 44 21 00 00 1E 02 3A 80 18 71 38 2D

    40 58 2C 45 00 56 50 21 00 00 1E 00 00 00 00 CE

     

     

        *    Built-in Display    *

     

     

    Monitor Name:            Monitor generico Plug and Play

    Display Type:            Digital

    Gamma Value:            2,2

    DDC2 Protocol:            Supported

     

     

    Maximum Image Size:

    Horizontal:            13,39 pollici

    Vertical:            07,48 pollici

     

     

    Monitor Supported Modes:

    1366 by 768 (60 Hz)

     

     

     

    Display Power Management Support:

    Standby Mode:            Not Supported

    Suspend Mode:            Not Supported

    Active Off Mode:        Not Supported

     

     

     

     

    * Other names and brands are the property of their respective owners. *

    P.S.:greetings to all from Italy!

  • 7. Re: How to get Full Range RGB from Intel HD Graphics?
    algurov Community Member
    Currently Being Moderated

    Hello evryone,

     

    I have the same issue and I have a VIZIO E320AR HDTV.  I will paste my Graphics 300 info so Intel can have it and change the issue.  However, when I just bough my TV, olike three weeks ago, I plug the VGA cable to my computer and it worked perfectly fine for 2 weeks.  I was able to enjoy full 32" of computer screen.  I have no idea what happen, but last Monday I turned my computer on and it worked fine, and then, I re-started it and SLAM, no wide-screen option on my screen or on the menu of the TV.  I called Dell, NO answer, I called VIZIO, no answer.  Now I can see that is not only me, but I had it right.  So please, INTEL give us a better explanation than just the one we had already.  Thanks

     

    Intel(R) HD Graphics 3000

     

     

     

     

     

     

     

     

    Report Date: 7/5/2012

    Report Time[hr:mm:ss]: 15:31:56

    Driver Version: 8.15.10.2418

    Operating System: Windows 7  Service Pack 1(6.1.7601)

    Default Language: English (United States)

    DirectX* Version: 10.1

    Physical Memory: 2984 MB

    Minimum Graphics Memory: 64 MB

    Maximum Graphics Memory: 1300 MB

    Graphics Memory in Use: 114 MB

    Processor: x86 Family 6 Model 42 Stepping 7

    Processor Speed: 2594 MHz

    Vendor ID: 8086

    Device ID: 0126

    Device Revision: 09

     

     

     

     

     

     

     

     

    *   Processor Graphics Information   *

     

     

     

     

    Processor Graphics in Use: Intel(R) HD Graphics 3000

    Video BIOS: 2089.11

    Current Graphics Mode: 1024 by 768

     

     

     

     

     

     

     

     

    *   Devices Connected to the Graphics Accelerator   *

     

     

     

     

    Active Notebook Displays: 1

      * Built-in Display *

     

     

     

     

    Monitor Name: Generic PnP Monitor

    Display Type: Digital

    Gamma Value: 2.2

    DDC2 Protocol: Supported

     

     

     

     

    Maximum Image Size:

    Horizontal: 12.20 inches

    Vertical: 06.69 inches

     

     

     

     

    Monitor Supported Modes:

    1366 by 768 (40 Hz)

    1366 by 768 (60 Hz)

     

     

     

     

     

     

    Display Power Management Support:

    Standby Mode: Not Supported

    Suspend Mode: Not Supported

    Active Off Mode: Not Supported

     

     

     

     

    Raw EDID:

    00 FF FF FF FF FF FF 00 30 E4 EB 02 00 00 00 00

    00 14 01 04 90 1F 11 78 0A B7 A5 97 58 56 8F 27

    1F 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01

    01 01 01 01 01 01 58 1B 56 7E 50 00 0E 30 24 30

    35 00 35 AE 10 00 00 19 DE 12 56 9E 50 00 18 30

    24 30 35 00 35 AE 10 00 00 19 00 00 00 FE 00 4B

    4A 32 36 32 80 31 34 30 57 48 34 0A 00 00 00 00

    00 00 41 31 94 00 00 00 00 01 01 0A 20 20 00 94

     

     

     

     

    * Other names and brands are the property of their respective owners. *

  • 8. Re: How to get Full Range RGB from Intel HD Graphics?
    Marco Vuano Community Member
    Currently Being Moderated

    The "Full Range" here refers mainly to an HDMI feature that allows to use all the 256 possible values of red, green and blue (0-255), as is often done in computer monitors when using a PC and setting 16,7 millions of colors (24 or 32 bit), while in the television world it is usually used a limited range of RGB values which uses only 220 values of red, green and blue (16-235), which are those specified on ITU-R recommendations BT.709-5 (that describes the "Parameter values for the HDTV standards for production and international programme exchange"). The HDMI support both modes. When I used the VGA cable, I had no problem in having the Full Range RGB values (but of course, you have to set it up properly in order not to have a blurry screen when using 1920 x 1080 resolution and also you are likely not to be able to play content which requires HDCP). Regarding your problem, I would suggest this:

    -have you tried changing the resolution (your report says you set 1024x768, which is a 4:3 format)?

    -have you tried to check whether your VGA cable is faulty?

    Also, your report does not have a section about the external display but only about the notebook display. Do you use a notebook or a desktop PC? Was the TV connected via VGA cable when you created the report? If the response to these two last questions is yes, then probably there is something not working with either the VGA cable or the iGPU (the GPU on the processor) or the driver.

  • 9. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Marco: it's funny how the open source driver developers (Ubuntu) have managed to get this to work while the bug remains in the Intel Windows driver for more than a year. Or did Ubuntu install binary proprietary Intel drivers for Ubuntu (like it does for NVIDIA)?

     

    I was also going to ask if someone had driver driver update 2761, but I see the latest provided debug log shows this driver version, and I assume the problem has not been fixed there.

     

    I also posted the question in an Intel related discussion thread here in the forum below, but other users reported it to be a known problem with no other solution than to install a dedicated GPU. One user reported custom resolutions to work, which I have seen on AVS forum as well. My TV won't accept this, and I tried to create a custom resolution with only the refresh rate changed, but this did not make any difference. Oh well, my fanless dedicated ATI 6450 GPU really is no trouble at all, but it would have been nice to use the Intel CPU/iGPU for its intended purpose in this HTPC. Well, maybe one day, we can only hope

    http://forum.doom9.org/showthread.php?p=1580228#post1580228

  • 10. Re: How to get Full Range RGB from Intel HD Graphics?
    Marco Vuano Community Member
    Currently Being Moderated

    It seems that the drivers used in Ubuntu are indeed the open source drivers from Intel. It must be said, however, that they probably have a bug too: regardless of the "Broadcast RGB" setting ("Full" or "Limited 16:235") on HDMI1 on Xrandr, they seem to always use the Full Range of RGB values.

    About the Windows driver, thanks to your hints and those found in another thread I focused a bit more on the problem: according to some experiments done with my TV monitor, when using the 2761 drivers without YCbCr output, it seems that when you set modes with PC-only resolutions (e.g. 1680 x 1050, 1280 x 1024 etc.) and 59 or more Hz as vertical frequency and progressive scan, they're output with the Full Range of RGB values. From the same experiments it also seems that the modes output with the limited range are:

    -all modes with interlaced scan

    -all modes with less than 59 Hz vertical frequency and progressive scan

    -the "common" mode with 1920 x 1080 resolution, 60 Hz vertical frequency and progressive scan (1080p60) and the other "common" mode with 1280 x 720 resolution, 60 Hz vertical frequency and progressive scan (720p60)

    (Of course this list is probably still not complete, I suspect that all modes related to television are output with a limited range of RGB values).

    About the workaround with the custom resolution, I found that on my tv monitor you can create 1080p60 with GTF (that is 1920 x 1080 at 60 Hz with 32 bit per pixel, which when created using GTF has a vertical frequency very near to 60 Hz), if you create this mode you'll have a 1080p60 mode with a Full Range of RGB values. Anyway I'm not sure it will work with every TV or monitor, you can also try CVT and CVT-RB timings (the latter is recommended if your TV or PC supports only HDMI connections with a clock less or equal to 165 MHz, but has a 59,934 Hz vertical frequency).

     

    EDIT:fixed some typos and made some other corrections, my English however is still not very good..

    EDIT 2:clarified what the "1080p60" and "720p60" modes are

  • 11. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Marco: your suggestion is something I would like to try - but I was wondering what you mean by custom resolution created using GTF? What is "GTF"? Graphics Timing Formula... Isn't that a Linux cmd line tool? I run Linux at work, but not at home at the moment...

  • 12. Re: How to get Full Range RGB from Intel HD Graphics?
    Marco Vuano Community Member
    Currently Being Moderated

    GTF is Generalized Timing Formula - an "old" standard that define timings in order to obtain the desired resolution at a vertical refresh rate near the desired refresh rate. It was superseded by CVT and CVT-RB, but I think it is still quite good if you want to obtain a vertical refresh rate which, at least in theory, is near the desired rate (but that depends, in fact, on how the control panel generates the timings, if you want to be sure, you can use the GTF spreadsheet you can find in internet or the gtf command in Linux and use the parameter reported. In any case I think that the actual vertical refresh rate depends also on the GPU and other factors, therefore you must check whether the "advantage" over the more recent CVT and CVT-RB is just theoretical).

    I mentioned it because the "custom resolutions" section you can choose the standard to be used to define the timings. Unfortunately I don't know what standard has the best performance in terms of actual vertical refresh rate, while all the three standard mentioned (GTF, CVT and CVT-RB) create modes which are output with Full Range RGB values and are supported by my tv monitor. Anyway, if you don't want a pixel clock greater than the 165 MHz limit of single-link DVI and HDMI (with type A connectors) up to version 1.2a and still have a 1920 x 1080 resolution with 32 bits per pixel, 60 Hz vertical refresh rate and progressive scan you should definitely use CVT-RB.

    EDIT: more clearly specified the connections subjected to the 165 MHz limit

  • 13. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Thanks! I am going to try this out, but it will have to wait a couple of weeks - about to leave on vacation

  • 14. Re: How to get Full Range RGB from Intel HD Graphics?
    Lillevold Community Member
    Currently Being Moderated

    Allan from Intel: can you provide any updates on this issue?

    It would be sincerely appreciated.

    Thanks!

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