Ubuntu
xserver-xorg-video-intel package

  1. Bug #966744
  2. Comment #269

Comment 269 for bug 966744

Revision history for this message
Christian Dysthe (christian-dysthe) wrote :

I have a Thinkpad L520 which had this problem in 12.10. I have also had this problem on an Asus machine a while back. I tried the solution I found for the Asus on my Thinkpad and it worked. This is what I did:

Create a file /etc/pm/sleep.d/20_custom_ehci_hcd containing:

#!/bin/sh
# File: "/etc/pm/sleep.d/20_custom-ehci_hcd".
case "${1}" in
 hibernate|suspend)
# Unbind ehci_hcd for first device 0000:00:1a.0:
echo -n "0000:00:1a.0" | tee /sys/bus/pci/drivers/ehci_hcd/unbind
# Unbind ehci_hcd for second device 0000:00:1d.0:
echo -n "0000:00:1d.0" | tee /sys/bus/pci/drivers/ehci_hcd/unbind
;;
 resume|thaw)
# Bind ehci_hcd for first device 0000:00:1a.0:
echo -n "0000:00:1a.0" | tee /sys/bus/pci/drivers/ehci_hcd/bind
# Bind ehci_hcd for second device 0000:00:1d.0:
echo -n "0000:00:1d.0" | tee /sys/bus/pci/drivers/ehci_hcd/bind
;;
esac

Set it 755 and owned by root. Now the display returns after sleep without problems.