EDID problem

EDID problem

[Engin Firat]

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Hello,


I want to use custom EDID for one of my monitors. This because the monitor
has a broken EDID structure. I have been trying to use a custom EDID (a
binary message was saved before) within Xorg.conf. Is this possible?


I have installed the drivers by using :
Intel(R) Graphics Installer for Linux* 1.0.7

and the operating system is Ubuntu 14.04 64bit.

Regards.

-- 
*Engin FIRAT*
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Fwd: EDID problem

[Engin Firat]

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Hello,


I want to use custom EDID for one of my monitors. This because the monitor
has a broken EDID structure. I have been trying to use a custom EDID (a
binary message was saved before) within Xorg.conf. Is this possible?


I have installed the drivers by using :
Intel(R) Graphics Installer for Linux* 1.0.7

and the operating system is Ubuntu 14.04 64bit.

Regards.

-- 
*Engin FIRAT*
Adoniss Yazılım Bilişim
Elektronik Araştırma Geliştirme
Limited Şirketi

+90 506 884 82 07 (Mobile)
ODTÜ Teknokent, ODTÜ-Halıcı Yazılımevi
İnönü Bulvarı / ANKARA (Address)





-- 
*Engin FIRAT*
Adoniss Yazılım Bilişim
Elektronik Araştırma Geliştirme
Limited Şirketi

+90 506 884 82 07 (Mobile)
ODTÜ Teknokent, ODTÜ-Halıcı Yazılımevi
İnönü Bulvarı / ANKARA (Address)

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Re: Fwd: EDID problem

[Chris Wilson]

On Sun, May 24, 2015 at 10:54:44PM +0300, Engin Firat wrote:
>    Hello,
> 
>    I want to use custom EDID for one of my monitors. This because the monitor
>    has a broken EDID structure. I have been trying to use a custom EDID (a
>    binary message was saved before) within Xorg.conf. Is this possible?

No, you need to tell the kernel to load the custom edid (userspace is
not allowed to modify it otherwise). Look at the
drm_kms_helper.edid_firmware= module parameter. You basically save the
edid you want to use into /lib/firmware/my-edid.bin, then tell the
kernel to load it for your connector like
drm_kms_helper.edid_firmware=HDMI-A-1:my-edid.bin

Hope this helps,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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Re: EDID problem

[Felix Miata]

Engin Firat composed on 2015-05-24 22:54 (UTC+0300):

> I want to use custom EDID for one of my monitors. This because the monitor
> has a broken EDID structure. I have been trying to use a custom EDID (a
> binary message was saved before) within Xorg.conf. Is this possible?

Xorg is usually smart enough to automatically produce an appropriate modeline
if you simply use xorg.conf to provide the resolution you want and your
diplay's HorizSync and VertRefresh specifications. IOW, manufacturing a valid
EDID is usually a lot of unnecessary work. Here, it has never been a
necessary workaround to oft-encountered invalid EDID.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/
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