Bug 23350

Summary:

EDID needs to use the analog DDC port if DVI is used on Mac mini

Product:

DRI

Reporter:

Tino Keitel <tino.keitel+fdo>

Component:

DRM/Intel

Assignee:

ykzhao <yakui.zhao>

Status:

CLOSED FIXED

QA Contact:

Severity:

normal

Priority:

medium

Keywords:

patch

Version:

XOrg git

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Bug Depends on:

Bug Blocks:

23600

Attachments:

Description	Flags
patch to get EDID info for the DVI port	none
patch to get EDID info for the DVI port	none

Description Tino Keitel 2009-08-16 12:06:39 UTC

Without the following patch, KMS doesn't get any modes from my LCD and the screen stays black. The patch was originally posted by Keith packard with this subject:

drm/i915: sdvo: check GPIOA for SDVO DDC (vga DDC) when GPIOE fails

With the patch, I can use KMS in the text console and Xorg on my Mac mini Core2 Duo.

I rebased it against 2.6.31-rc6, as the original patch doesn't apply anymore.

Comment 1 Tino Keitel 2009-08-16 12:07:22 UTC

Created attachment 28674 [details] [review]
patch to get EDID info for the DVI port

Comment 2 Tino Keitel 2009-08-16 12:07:32 UTC

Created attachment 28675 [details] [review]
patch to get EDID info for the DVI port

Comment 3 ykzhao 2009-09-09 22:43:31 UTC

the patch is already shipped in Eric's drm-intel-next tree.

commit 57cdaf90f5f607eb029356074fefb66c9b1c0659
Author: Keith Packard <keithp@keithp.com>
Date:   Fri Sep 4 13:07:54 2009 +0800

    drm/I915: Use the CRT DDC to get the EDID for DVI-connector on Mac

So this bug will be marked as resolved.

Thanks.

Comment 4 Tino Keitel 2009-09-30 09:33:37 UTC

It works with 2.6.32-rc1.

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