*** This bug is a duplicate of bug 1181789 *** https://bugs.launchpad.net/bugs/1181789
The last message from me - now everything works. After all steps before finally I did this: 1) Removed the TV card Winfast DTV2000H, that was unused maybe two years and I forgot it is there :-) . Seems that something between the Linux and the card does not handle the ACPI events correctly. Then I could sleep the computer, but not wake up - sometimes absolutly, sometimes it started into KDE login screen, could move with mouse, but could not write anything. 2) Upgraded kernel, now uname -a writes this: Linux dmatej 3.8.0-31-generic #46-Ubuntu SMP Tue Sep 10 20:03:44 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux - then I could switch to another session via CTRL+ALT+F1, kill KDE and start again - sometimes it worked after three cycles of killing. 3) Installed the nvidia-current-updates package again (3.0.4). It is three days and everything works as I want. Happyend :-) I think in my case problems was caused by several reasons, somehow related. I wrote this only to report that my problem is solved and how. This issue is probably duplicate as the previus comment says. See https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1181789 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1170911 Title: "mount: / is busy" error during shutdown (not network-manager) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sysvinit/+bug/1170911/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs