For the record I have the same issue with 12.04 (64bit) on Lenovo L420 Thinkpad (Intel core-i5).
I had to get the latest BIOS (1.18) in order to get Ubuntu to install/boot without adding boot parameters. I have tried multiple solutions, including the bind/unbind script that is posted here (I will try the chvt idea tonight, but probably won't work because ^@F1 ^@F7 doesn't anyway). "nolapic' in boot parameters fixes suspend but breaks hibernate, i.e. With no extra boot parameters, hibernate/resume works, but suspend/resume hangs at black screen, unresponsive keyboard at resume (after I hear the CD drive click). When I put "nolapic" in the boot parameters, suspend/resume works, but hibernate/resume stops working. When I say "hibernate" or "suspend" I am using "sudo pm-hibernate" and "sudo pm-suspend" to eliminate any other bugs (i.e. not using the special keys to do it). I have not got around to applying any fixes to the power settings menu, so that "hibernate" appears in it yet. I have even tried the 'debugging resume problems' method (/sys.....pm_trace=1), but don't see anything in the logs that means anything to me. /var/log/pm-suspend.log shows failures on network manager, so I tried stopping it before suspend and also I tried modprobe'ing out the two network drivers (wired and wireless), but that did not help either. There is/are postings about doing something to the DSDT save/restore state that I have not got my head around yet, but probably I will wait for the next proper update, so this is just a little posting to alert any other Thinkpad L420 / 64bit user that the resume solution is an easy fix. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/989674 Title: Ubuntu 12.04 i386 does not reboot back Unity from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/989674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
