Bug 22440

Summary:	[915GM KMS] Booting with i915 modeset=1 results in [drm:drm_fill_in_dev] ERROR Cannot initialize the agpgart module
Product:	xorg	Reporter:	Sven Arvidsson <sa>
Component:	Driver/intel	Assignee:	Gordon Jin <gordon.jin>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	Keywords:	NEEDINFO
Version:	7.4 (2008.09)
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Sven Arvidsson 2009-06-23 11:10:17 UTC

I'm trying to enable KMS directly from boot on my Asus Eee PC 701 4G by passing the kernel parameter video=i915:modeset=1. This works fine on my G45 system, but on the Eee I get two error messages:

 [drm:drm_fill_in_dev] *ERROR* Cannot initialize the agpgart module.
 DRM: Fill_in_dev failed.

The i915 module is loaded (but without KMS) and booting continues, but starting X causes the screen to go black.

Loading the i915 module later during boot (via /etc/modules for example) works fine.

Kernel 2.6.29 does not print this error, but the i915 module isn't loaded at all, so I guess there's some sort of problem in this version too.

I'm not sure if this is a bug, or a problem with the order in which Debian's initramfs loads the modules?

System environment:
-- chipset: 910GML 
-- system architecture: 32-bit
-- Linux distribution: Debian unstable
-- Machine or mobo model: Asus Eee PC 701 4G (using latest BIOS from Asus)
-- Display connector: LVDS
-- xf86-video-intel: 52367847087206b92f18c40d356d36ab9ee89d39
-- mesa: 7.4
-- xserver: 1.6.1.901
-- drm: 07646002c6835537c6ae44ef9b3f8480762279b8
-- kernel: 2.6.30 (from debian)

Comment 1 Gordon Jin 2009-06-23 18:54:44 UTC

This seems a kernel config issue, and likely to be dup with bug#22358.

Could you make sure agpgart built in, or this patch helps:
http://git.kernel.org/?p=linux/kernel/git/anholt/drm-intel.git;a=commit;h=8c52da503b7e4cf961807f11824e3258ef9f7f1c

Comment 2 Julien Cristau 2009-06-24 01:54:17 UTC

make sure the intel_agp module is included in your initramfs, if i915 is
there.

Comment 3 Sven Arvidsson 2009-06-24 06:39:32 UTC

Thanks for the help. 

The difference between the two systems was that on the G45 I had manually added intel-agp as a requirement for i915 in the initramfs scripts, but not on the Eee, it works fine on both now.

(I'm closing this bug as INVALID)

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