My suspend has always worked but stopped doing so yesterday. The days before I fiddled around a bit with Xorg, but I have reverted all those changes already. What I was working on was vaapi support and installed xbmc. I also updated Xorg from the Ubuntu repository yesterday. I tried to manually downgrade the updated packages which I got from
/var/log/apt but resuming from suspend would still not work.
I have a Lenovo E320 with a Sandy Bridge chipset. After A suspend the screen stays back, CTRL+ALT+F1 / F7 don't do anything. I even put a script into
/etc/pm/sleep.d/ which writes into /var/log/wakeup but it does not print anything. Putting the lid down again doesn't put the laptop into suspend again.
I put the computer to sleep 15:55, woke it up 15:56 and force shut it down 15:57 by long pressing the power button. Then 15:58 I restarted it. This is the resulting syslog: http://pastebin.com/ih9CKb0t
I will provide any other logs required!
Thank you very much for your help, Fred