Comment 1 for bug 47508

May I add that by going to the directory /etc/acpi/ and then running the "sleep.sh" does nothing. However changing the "sleep.sh" code to the following and running works perfectly.

Sleep Code Hack(sleep.sh)

#!/bin/bash

# change to console 1
FGCONSOLE=`fgconsole`
chvt 6

# safe video state
cat /proc/bus/pci/00/02.0 > /tmp/video_state

# sync filesystem
sync

# sync hardware clock with system time
hwclock --systohc

# go to sleep
echo -n 3 > /proc/acpi/sleep

# waking up
# restore system clock
hwclock --hctosys

# restore video state
cat /tmp/video_state > /proc/bus/pci/00/02.0

# change back to X
chvt $FGCONSOLE

# clean up behind us
rm /tmp/video_state

Reference: http://www.thinkwiki.org/wiki/Problem_with_display_remaining_black_after_resume#Solution_for_ThinkPads_with_Intel_Extreme_Graphics_2