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Date:      Wed, 11 Feb 2015 10:41:41 -0500
From:      "Ian FREISLICH" <ianf@capeaugusta.com>
To:        freebsd-current@freebsd.org
Subject:   r277959 breaks X display on IvyBridge mobile GT2 IG
Message-ID:  <E1YLZQ5-000GX8-Pk@clue.co.za>
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Hi

With this commit my display blanks and never lights up when X starts.

[zen] /usr/src # svn diff -r 277958:277959
Index: sys/dev/drm2/i915/intel_display.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- sys/dev/drm2/i915/intel_display.c   (revision 277958)
+++ sys/dev/drm2/i915/intel_display.c   (revision 277959)
@@ -6995,7 +6995,7 @@
         */
        I915_WRITE(BLC_PWM_CPU_CTL2, PWM_ENABLE);
        I915_WRITE(BLC_PWM_CPU_CTL, 0);
-       I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE | (1<<30));
+       I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE);
 }

 void intel_modeset_init_hw(struct drm_device *dev)


vgapci0@pci0:0:2:0:     class=3D0x030000 card=3D0x15171043 chip=3D0x016680=
86 rev=3D0x09 =

hdr=3D0x00
    vendor     =3D 'Intel Corporation'
    device     =3D '3rd Gen Core processor Graphics Controller'
    class      =3D display
    subclass   =3D VGA
    cap 05[90] =3D MSI supports 1 message enabled with 1 message
    cap 01[d0] =3D powerspec 2  supports D0 D3  current D0
    cap 13[a4] =3D PCI Advanced Features: FLR TP

Ian

-- =

Ian Freislich

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