[Intel-gfx] Black screen when loading i915 on Mac mini Core Duo

[Tino Keitel]

On Mon, Jul 13, 2009 at 21:12:30 +0200, Tino Keitel wrote:

[...]

> In the console, when I load the i915 module, the screen gets black.
> This is the kernel output:
> 
> mtrr: no MTRR for 80000000,10000000 found
> [drm] Initialized drm 1.1.0 20060810
> i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
> i915 0000:00:02.0: setting latency timer to 64
> i2c-adapter i2c-2: unable to read EDID block.
> i915 0000:00:02.0: DVI-D-1: no EDID data
> i2c-adapter i2c-2: unable to read EDID block.
> i915 0000:00:02.0: DVI-D-1: no EDID data
> [drm] TV-10: set mode NTSC 480i 0
> [drm:drm_helper_initial_config] *ERROR* connectors have no modes, using
> standard modes
> [drm] fb0: inteldrmfb frame buffer device
> [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
> 
> The computer has just a DVI-I output, an LCD with a resolution of
> 1680x1050 is connected via DVI.
> 
> It looks like the EDID routines failed.

Any hints regarding this? I once saw a commit whith this subject:

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

on this list posted by Keith Packard. However, it doesn't seem to be
merged yet. This makes me think that my above issue is a known issue,
which is not handled in the current KMS code yet.

Regards,
Tino