How do I fix suspend in HP Chromebook 14? (Chrubuntu 14.10)

Question

WHen I close the lid, it suspends, but when I open it again, the screen stays full black. If I hit the power button, occasionally it will come back to life but sometimes i have to force a reboot unfortunately.

score 1 · Answer 1 · edited Dec 19 '14 at 11:18

All thanks to linvinus on reddit: How to make hibernate working in ubuntu 14.04 on Acer c720

How to make hibernate working in ubuntu 14.04 on Acer c720, tested in HP Chromebook 14 on Ubuntu 14.10 kernel 3.17 as well, works. He has Lubuntu 14.04 kernel 3.13.0-24-generic c720 2G. For Debian, Arch, or Xubuntu, there are more instructions in the source link.

Takes about 5 mins to do, but works like a charm for me,

create file

sudo nano /etc/initramfs-tools/scripts/init-top/unbind_ehci

with following content

#####################
#!/bin/sh
PREREQ=""

prereqs()
{
        echo "${PREREQ}"
}

case ${1} in
        prereqs)
                prereqs
                exit 0
                ;;
esac

log_success_msg "Unbind ehci for preventing error"
echo -n "0000:00:1d.0" > /sys/bus/pci/drivers/ehci-pci/unbind
exit 0
#################

change mode

sudo chmod a+x /etc/initramfs-tools/scripts/init-top/unbind_ehci

create udev rule

sudo nano /etc/udev/rules.d/10_disable-ehci.rules

ACTION=="add", SUBSYSTEM=="pci", DRIVER=="ehci_hcd", \
    RUN+="/bin/sh -c 'echo -n %k > %S%p/driver/unbind'"

update initramfs
```
sudo update-initramfs -k all -u
```

this script will fix touchpad after resume

sudo nano /etc/pm/sleep.d/99zcyapa

with following content

#####################
#!/bin/bash -x
# File: "/etc/pm/sleep.d/99_cyapa".
case "${1}" in
        hibernate)
      /sbin/rmmod cyapa
                ;;
  resume|thaw)
          COUNTER=0
          while [  $COUNTER -lt 10 ]; do
                        date >>/tmp/99_cyapa
                        /sbin/modprobe cyapa
          sleep 1
          dmesg | grep cyapa | tail -1 | grep error >/dev/null
          RES=$?
          echo "res=$RES"
          if [ ${RES} -ne 1 ] ; then
              /sbin/rmmod cyapa
              sleep 1
          else
              #done
              COUNTER=11
          fi

                  COUNTER=`expr $COUNTER + 1`
          done
      ;;
esac
exit 0
#################

Change mode!

sudo chmod a+x /etc/pm/sleep.d/99zcyapa

ensure that in you have tpm_tis.interrupts=0

sudo nano /etc/default/grub

there is my settings

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash  boot=local  i915.modeset=1 tpm_tis.interrupts=0 "

update grub

sudo update-grub2

Reboot

Again thanks to linvinus on reddit

How do I fix suspend in HP Chromebook 14? (Chrubuntu 14.10)

1 Answers1