Are you sure it is just the backlight that is off? (Does changing its
brightness restore the display?) Can you please attach a drm.debug=6
dmesg from across the suspend & resume?
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1287352
Title:
screen does not wake after suspend always, intel
Status in “xserver-xorg-video-intel” package in Ubuntu:
Incomplete
Bug description:
Hardware is
*-display:0
description: VGA compatible controller
product: Mobile GM965/GL960 Integrated Graphics Controller
(primary)
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 03
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
thi s is a problem after upgradeing from 13.10 to 14.04 beta. System has
latest 14.04 updates
After suspend, the screen does not resume. There is no backlighting.
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