Comment 1 for bug 711501

Sometimes a shutdown works correctly (it worked correctly on one of my last four shutdowns). Reboot usually works but sometimes causes a freeze (it froze one of my last four reboots). The suspend and hibernate freeze are broken 100% of the time, and cause a "freeze" with a stuck mouse cursor and the last image on the screen..

Hibernate seems to flush RAM to disk successfully, but the LCD screen and computer never power off.

Various ASUS computers and motherboard have had problems with suspend before. I tried all the known solutions I could find but none were successful.

I disabled my internal USB controller in my BIOS. Results were the same.

I tried unbinding my EHCI devices using a custom script in /etc/pm/sleep.d/20_custom-ehci_hcd as described here:
http://ubuntuforums.org/showthread.php?p=9261807

I did not have the xhci module, but I tried unload the ahci module in a custom /etc/pm/config.d/usb3-suspend-workaround in the URL above. Didn't help. I then put all the USB modules (rt2x00usb and all other rt2?00* modules) and the "mac80211" module in there, with the same results.

I tried using the GRUB option "acpi_sleep=old_ordering" in /etc/default/grub on the line GRUB_CMDLINE_LINUX_DEFAULT, as described here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/347150

That didn't help either. (I did remember to run update-grub.)

Apparently suspend and resume is an issue that lots of people are having problems with in 10.10. Here is a forum with fourteen pages and many unresolved suspend issues in 10.10:
http://ubuntuforums.org/showthread.php?t=1596545&page=14

I tried all the suggestions I found there. I installed the 10.10 "hibernate" package, but that did not change anything. I put the line GRUB_CMDLINE_LINUX="acpi_sleep=nonvs" in my /etc/default/grub config file, ran update-grub, and got the same result. I tried unloading various modules at suspend, looking for a culprit. No dice.

I tried upgrading to a PPA kernel 2.6.36-020636, as one of the posters suggested. At least two other posters reported success. I followed this:
http://www.ramoonus.nl/2010/10/linux-kernel-2-6-36-installation-guide-ubuntu-linux/

...but alas, that too did not work for me.

I tried the older kernel 2.6.35-22 that came with the 10.10 CD but got the same results. One guy said that worked for him.

I tried upgrading to 2.6.37-rc2 from the PPA. Same results.

I will now try downgrading to Ubuntu 10.04, to see if that works. Some people reported that 10.04 worked for them but 10.10 does not.

This reminds of the v9.10 upgrade that broke lots of peoples' WiFi... :(