Bug 30126

Summary:	Reverted: allow LVDS on pipe A
Product:	DRI	Reporter:	Chris Wilson <chris>
Component:	DRM/Intel	Assignee:	Chris Wilson <chris>
Status:	CLOSED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	jbarnes
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Chris Wilson 2010-09-10 15:18:35 UTC

commit 12e8ba25ef52f19e7a42e61aecb3c1fef83b2a82
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Sep 7 23:39:28 2010 +0100

    Revert "drm/i915: Allow LVDS on pipe A on gen4+"
    
    This reverts commit 0f3ee801b332d6ff22285386675fe5aaedf035c3.
    
    Enabling LVDS on pipe A was causing excessive wakeups on otherwise idle
    systems due to i915 interrupts. So restrict the LVDS to pipe B once more,
    whilst the issue is properly diagnosed.
    
    Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16307
    Reported-and-tested-by: Enrico Bandiello <enban@postal.uv.es>
    Poked-by: Florian Mickler <florian@mickler.org>
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Adam Jackson <ajax@redhat.com>
    Cc: stable@kernel.org

Comment 1 Chris Wilson 2010-12-04 15:54:46 UTC

Enabled for Ironlake+:

commit 627121acbefb6fdc6d1811aaaaed8e09593d433b
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sat Dec 4 17:49:46 2010 +0000

    drm/i915: Allow LVDS to be on pipe A for Ironlake+
    
    Previously we enabled this for gen4, only to have to revert it due to it
    causing a large number of spurious wakeups. Try again hoping that the
    hardware has become more sane in the mean time...
    
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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