Bug 31114

Summary:	eDP panel is slow to "turn on" when it has been turned off by power management
Product:	DRI	Reporter:	Jim Gettys <jg>
Component:	DRM/Intel	Assignee:	Jesse Barnes <jbarnes>
Status:	CLOSED FIXED	QA Contact:
Severity:	normal
Priority:	low	CC:	jbarnes
Version:	unspecified
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Jim Gettys 2010-10-25 16:05:54 UTC

On an eDP panel on an HP 2540p laptop, if the screen is put to sleep to save power, it takes about a second after touching the keyboard or mouse for it to turn back on again.

Something isn't quite right....

This may or may not be related to bug #31112.

Comment 1 Chris Wilson 2010-10-28 03:09:23 UTC

Deliberately. I was sure someone would noticed all of the msleep(300) scattered throughout the eDP code.

Comment 2 Chris Wilson 2010-12-06 03:42:06 UTC

Assigning to Jesse in the hope he'll get a chance to review all the excruitatingly long sleeps, or at least add comments to warn of the dangers of tweaking them. ;-)

Comment 3 Chris Wilson 2011-01-25 04:18:43 UTC

drm-intel-next commit 987a709e1589cf10e250e04ce9df910b735d4f60
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Mon Jan 24 17:10:53 2011 -0800

    drm/i915: remove now unnecessary delays in eDP panel power sequencing
    
    Now that we're doing the right thing elsewhere, these are no longer
    necessary.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31114
    Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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