Entire system freezing after pressing "Suspend" [closed]

So I just installed Ubuntu, and I love it. I don't think it's going to replace Windows 7 for me, and it has a few problems that I'm probably going to end up fixing when I figure out how to use WINE, but it's still awesome.

My main problem now is that whenever I put Ubuntu in to suspend, the entire thing freezes. The monitor is still on, but is only black, and there is no reaction to any buttons.

While I don't mind pressing Shut Down since Ubuntu loads up rather fast in comparison to Windows 7, it can get annoying and inconvenient.

Thanks for any help!

OK after a bit of work I modified the scrips above from the other suggestions. Thank you @wangdw! Here is the following bad ass script (don't forget as before to create a file using sudo gedit /etc/pm/sleep.d/20_custom-ehci_hcd and also to set the read permissions using sudo chmod 755 /etc/pm/sleep.d/20_custom-ehci_hcd):

  #!/bin/sh
  #inspired by http://art.ubuntuforums.org/showpost.php?p=9744970&postcount=19
  #...and http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug    
  # tidied by tqzzaa :)

  VERSION=1.1
  DEV_LIST=/tmp/usb-dev-list
  DRIVERS_DIR=/sys/bus/pci/drivers
  DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
  HEX="[[:xdigit:]]"
  MAX_BIND_ATTEMPTS=2
  BIND_WAIT=0.1

  unbindDev() {
    echo -n > $DEV_LIST 2>/dev/null



  for driver in $DRIVERS; do
    DDIR=$DRIVERS_DIR/${driver}_hcd
    for dev in `ls $DDIR 2>/dev/null | egrep "^$HEX+:$HEX+:$HEX"`; do
      echo -n "$dev" > $DDIR/unbind
      echo "$driver $dev" >> $DEV_LIST
    done

  #for bus in $EHCI_BUSES; do
     echo -n $bus > /sys/bus/pci/drivers/ehci_hcd/unbind
 # done   

  done

}

bindDev() {
  if [ -s $DEV_LIST ]; then
    while read driver dev; do
      DDIR=$DRIVERS_DIR/${driver}_hcd
      #for bus in $EHCI_BUSES; do
          echo -n $bus > /sys/bus/pci/drivers/ehci_hcd/bind
      #done
      while [ $((MAX_BIND_ATTEMPTS)) -gt 0 ]; do
          echo -n "$dev" > $DDIR/bind
          if [ ! -L "$DDIR/$dev" ]; then
            sleep $BIND_WAIT
          else
            break
          fi
          MAX_BIND_ATTEMPTS=$((MAX_BIND_ATTEMPTS-1))
      done 


    done /dev/null

  chvt 1
  chvt 7
}



  EHCI_BUSES="0000:00:1a.0 0000:00:1d.0"
  case "$1" in
    hibernate|suspend)
    unbindDev;;

    resume|thaw)
    bindDev;;

    esac

i have the same problem. try this: http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug work like a charm for me...

I've been experiencing the same problem. It seems that Ubuntu attempts to suspend itself but some hardware doesn't want to comply. Here are some repairs that might work:

1. open a terminal by holding ctrl+alt+t;
2. type: sudo gedit /etc/pm/sleep.d/20_custom-suspend;
3. press Enter and authenticate;
4. put the following text into the created file; save it and exit. 
5. reboot and see if it works. 

This little script comes from somewhere on the Internet but I cannot find the source...

EHCI_BUSES="0000:00:1a.0 0000:00:1d.0"
case "${1}" in
    hibernate|suspend)
        # Switch USB buses off
        for bus in $EHCI_BUSES; do
            echo -n $bus > /sys/bus/pci/drivers/ehci_hcd/unbind
        done
        ;;
    resume|thaw)
        # Switch USB buses back on
        for bus in $EHCI_BUSES; do
            echo -n $bus > /sys/bus/pci/drivers/ehci_hcd/bind
        done
        ;;
esac

Please try this out and tell me your findings!

If that script doesn't work, you might want to try another:

#!/bin/sh
#inspired by http://art.ubuntuforums.org/showpost.php?p=9744970&postcount=19
#...and http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-  not-working-bug
# tidied by tqzzaa :)

VERSION=1.1
DEV_LIST=/tmp/usb-dev-list
DRIVERS_DIR=/sys/bus/pci/drivers
DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
HEX="[[:xdigit:]]"
MAX_BIND_ATTEMPTS=2
BIND_WAIT=0.1

unbindDev() {
  echo -n > $DEV_LIST 2>/dev/null
  for driver in $DRIVERS; do
    DDIR=$DRIVERS_DIR/${driver}_hcd
    for dev in `ls $DDIR 2>/dev/null | egrep "^$HEX+:$HEX+:$HEX"`; do
      echo -n "$dev" > $DDIR/unbind
      echo "$driver $dev" >> $DEV_LIST
    done
  done
}

bindDev() {
  if [ -s $DEV_LIST ]; then
    while read driver dev; do
      DDIR=$DRIVERS_DIR/${driver}_hcd
      while [ $((MAX_BIND_ATTEMPTS)) -gt 0 ]; do
          echo -n "$dev" > $DDIR/bind
          if [ ! -L "$DDIR/$dev" ]; then
            sleep $BIND_WAIT
          else
            break
          fi
          MAX_BIND_ATTEMPTS=$((MAX_BIND_ATTEMPTS-1))
      done  
    done < $DEV_LIST
  fi
  rm $DEV_LIST 2>/dev/null
}

case "$1" in
  hibernate|suspend) unbindDev;;
  resume|thaw)       bindDev;;
esac