A few times I had similar problems like Angelos had.
I now am pretty sure that in my case the NOUVEAU driver in combination with the new GNOME libraries is the reason for the troubles.
Yesterday I gave up and installed Mint 15 with cinnamon - but same here. Only the combination lightdm+xfce made no problems. One time I had the chance to look at "dmesg" and there I saw a ton of errors (more than 50 lines) coming from noveau after waking up. Then I installed the proprietary nvidia drivers and the problems were gone.
My fault that I lost this dmesg output when I reinstalled Ubuntu 13.10 then.
Actual state: Ubuntu Gnome 13.10, Nvidia drivers 319 => working.
I hope that nouveau will soon be usable again, because the text consoles look ugly with nvidia drivers, no KMS, ...
A few times I had similar problems like Angelos had.
I now am pretty sure that in my case the NOUVEAU driver in combination with the new GNOME libraries is the reason for the troubles.
Yesterday I gave up and installed Mint 15 with cinnamon - but same here. Only the combination lightdm+xfce made no problems. One time I had the chance to look at "dmesg" and there I saw a ton of errors (more than 50 lines) coming from noveau after waking up. Then I installed the proprietary nvidia drivers and the problems were gone.
My fault that I lost this dmesg output when I reinstalled Ubuntu 13.10 then.
Actual state: Ubuntu Gnome 13.10, Nvidia drivers 319 => working.
I hope that nouveau will soon be usable again, because the text consoles look ugly with nvidia drivers, no KMS, ...