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Date:      Tue, 02 Jan 2007 03:04:14 +0000
From:      "Bruce M. Simpson" <bms@FreeBSD.org>
To:        Luigi Rizzo <rizzo@icir.org>
Cc:        stable@freebsd.org
Subject:   Re: drm and i915 issue on Dell Latitude X1 ?
Message-ID:  <4599CBAE.4000300@FreeBSD.org>
In-Reply-To: <20070101145309.A35044@xorpc.icir.org>
References:  <20070101145309.A35044@xorpc.icir.org>

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JFYI

Luigi Rizzo wrote:
> a curious thing... on my Dell Latitude X1 (scanpci -v output
> at the end) the drm module did not recognise the video card
> until i added this patch:
>   
This is odd. I have the same vendor/device IDs on the ThinkPad T43 and 
yet X.org's DRM loads fine here without this patch:

pci bus 0x0000 cardnum 0x02 function 0x00: vendor 0x8086 device 0x2592
 Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller

pci bus 0x0000 cardnum 0x02 function 0x01: vendor 0x8086 device 0x2792
 Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller

With the following difference:
 CardVendor 0x1014 card 0x0582 (IBM, Card unknown)

FreeBSD empiric.lon.incunabulum.net 6.2-RC1 FreeBSD 6.2-RC1 #2: Sun Dec 
24 11:20:48 GMT 2006     
bms@empiric.lon.incunabulum.net:/usr/src/sys/i386/compile/EMPIRIC  i386
empiric:/var/log % dmesg | grep drm
drmsub0: <Intel i915GM>: (child of agp_i810.c) on agp0
info: [drm] AGP at 0x90080000 0MB
info: [drm] Initialized i915 1.4.0 20060119

DRM, GLX modules show up in xdpyinfo.

By the way, there doesn't appear to be an 'ident' field for drm_pciids.h 
in the binaries, though I'm on 1.2.2.3.

glxgears runs as expected (~260fps in default scale at 1024x768x32bpp). 
I tested with an application by running games/gltron, which claims 
25-40fps in 512x384 full-screen. It still seemed jerky.

[Except after an ACPI suspend/resume via zzz, in which case, it cains 
the CPU on resume and only achieves 60fps-150fps, and acpi_video cannot 
attach, and gltron is jerky/doesn't work properly.]

Regards,
BMS



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