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Date: Sat, 3 Mar 2012 21:15:35 +0200
From: Ivan Klymenko <fidaj@ukr.net>
To: Alexander Motin <mav@FreeBSD.org>
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Cc: Garrett Cooper <yanegomi@gmail.com>, freebsd-hackers@freebsd.org
Subject: Re: [RFT][patch] Scheduling for HTT and not only
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=D0=92 Sat, 03 Mar 2012 18:30:50 +0200
Alexander Motin <mav@FreeBSD.org> =D0=BF=D0=B8=D1=88=D0=B5=D1=82:

> On 03.03.2012 17:26, Ivan Klymenko wrote:
> > I have FreeBSD 10.0-CURRENT #0 r232253M
> > Patch in r232454 broken my DRM
> > My system patched http://people.freebsd.org/~kib/drm/all.13.5.patch
> > After build kernel with only r232454 patch Xorg log contains:
> > ...
> > [   504.865] [drm] failed to load kernel module "i915"
> > [   504.865] (EE) intel(0): [drm] Failed to open DRM device for
> > pci:0000:00:02.0: File exists [   504.865] (EE) intel(0): Failed to
> > become DRM master. [   504.865] (**) intel(0): Depth 24, (--)
> > framebuffer bpp 32 [   504.865] (=3D=3D) intel(0): RGB weight 888
> > [   504.865] (=3D=3D) intel(0): Default visual is TrueColor
> > [   504.865] (**) intel(0): Option "DRI" "True"
> > [   504.865] (**) intel(0): Option "TripleBuffer" "True"
> > [   504.865] (II) intel(0): Integrated Graphics Chipset: Intel(R)
> > Sandybridge Mobile (GT2) [   504.865] (--) intel(0): Chipset:
> > "Sandybridge Mobile (GT2)" and black screen...
> >
> > do not even know why it happened ... :(
>=20
> I've just rebuilt my Core2Duo laptop with r232454 and have no any=20
> problem with Xorg and (at least old) Intel video driver. Now writing=20
> this mail from it. Now started rebuilding of my home server. I am not=20
> sure how this change can cause such specific effect. Are you sure you=20
> haven't changed anything else unexpectedly?
>=20

Sorry for the noise. :(
I did manage to run the system with the new patch ULE only the fifth
attempt...
Diagnose the cause I have not succeeded :(
This is probably a consequence of the experimental drivers for GPU
builtin in Sandy Bridge...

Thanks!