[PATCH] master-compat: Compile i915 DRM for out-of-tree. Optimus laptops need it.

[PATCH] master-compat: Compile i915 DRM for out-of-tree. Optimus laptops need it.

[Eric Appleman]

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Hi, a machine with both an Intel and Nvidia GPU needs both drivers built 
as modules otherwise the former will not work properly.

- Eric

[-- Attachment #2: makefile_i915_drm.patch --]
[-- Type: text/x-patch, Size: 330 bytes --]

diff --git a/nouveau/Makefile b/nouveau/Makefile
index 0a37e33..7405d43 100644
--- a/nouveau/Makefile
+++ b/nouveau/Makefile
@@ -59,7 +59,7 @@ DRMCFG := \
 	CONFIG_DRM_MGA=n \
 	CONFIG_DRM_I810=n \
 	CONFIG_DRM_I830=n \
-	CONFIG_DRM_I915=n \
+	CONFIG_DRM_I915=m \
 	CONFIG_DRM_SIS=n \
 	CONFIG_DRM_SAVAGE=n \
 	CONFIG_DRM_VIA=n \

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Re: [PATCH] master-compat: Compile i915 DRM for out-of-tree. Optimus laptops need it.

[Eric Appleman]

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On 11/11/2011 05:23 AM, Eric Appleman wrote:
> Hi, a machine with both an Intel and Nvidia GPU needs both drivers 
> built as modules otherwise the former will not work properly.
>
> - Eric
Sorry, Thunderbird is bad with attachments.

[-- Attachment #2: makefile_i915_drm.txt --]
[-- Type: text/plain, Size: 330 bytes --]

diff --git a/nouveau/Makefile b/nouveau/Makefile
index 0a37e33..7405d43 100644
--- a/nouveau/Makefile
+++ b/nouveau/Makefile
@@ -59,7 +59,7 @@ DRMCFG := \
 	CONFIG_DRM_MGA=n \
 	CONFIG_DRM_I810=n \
 	CONFIG_DRM_I830=n \
-	CONFIG_DRM_I915=n \
+	CONFIG_DRM_I915=m \
 	CONFIG_DRM_SIS=n \
 	CONFIG_DRM_SAVAGE=n \
 	CONFIG_DRM_VIA=n \

[-- Attachment #3: Type: text/plain, Size: 181 bytes --]

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Re: [PATCH] master-compat: Compile i915 DRM for out-of-tree. Optimus laptops need it.

[Pekka Paalanen]

On Fri, 11 Nov 2011 05:25:17 -0500
Eric Appleman <erappleman-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> On 11/11/2011 05:23 AM, Eric Appleman wrote:
> > Hi, a machine with both an Intel and Nvidia GPU needs both
> > drivers built as modules otherwise the former will not work
> > properly.
> >
> > - Eric
> Sorry, Thunderbird is bad with attachments.

Sorry, I'm not going to apply this.

This way of installing is meant only for nouveau, and building
i915 is for most people useless.

If you want both nouveau and i915, I would recommend building
the whole kernel with both of these from either Nouveau linux tree,
or Linus' tree. Or some other upstream tree.


Thanks.

-- 
Pekka Paalanen
http://www.iki.fi/pq/

Re: [PATCH] master-compat: Compile i915 DRM for out-of-tree. Optimus laptops need it.

[Pekka Paalanen]

On Sat, 12 Nov 2011 05:19:03 -0500
Eric Appleman <erappleman-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> I agree with your rationale, but consider the following case that
> has become increasingly important. Let's say a user wants to test
> bleeding-edge Nouveau DRM on a Sandy Bridge laptop with Optimus
> but doesn't have the knowledge or patience to roll an entire
> kernel or wait for a packaged one. Building nouveau and i915 at
> the same time would make for a convenient alternative and would
> permit faster testing as Optimus solutions such as windump,
> dma_buf, and Bumblebee continue to mature. The Makefile certainly
> allows for it. Would a wiki comment be an acceptable alternative
> to inclusion of this patch?

Yeah, sure, documenting it in the wiki would be nice.
But please do check all the i915 dependencies in the Kconfig files
to make sure that i915 gets what it needs. The Makefile probably
overrides many sanity checks in the kernel config system.


Thanks.

-- 
Pekka Paalanen
http://www.iki.fi/pq/