I've been running 11.04 one week (default upgrade by Update Manager from 10.04) on ThinkiPad T500, and I have the same problem;
After leaving my laptop for a while, sometimes (approx. once a day), the system hangs when trying to resume; - Screen saver picture shows beautifully - Mouse pointer shows and moves with mouse - Nothing brings back the login password input box. (Disabling password protection in the screen saver doesn't help, the screensaver picture and mousepointer still shows with no response) - Starting a new session from tty1 and running ps -ef then kill on the gnome screen saver process doesn't even remove the screen saver picture when pressing CTRL+ALT+F7 or F8 (depending on original session). - Trying kill on several processes, I found that kill -9 on compiz was the only thing that could unlock the hang/freeze. Note that in 2 occasions, this actually kept my existing login session, not killing running applications/virtual machines, whereas one time I lost the entire session and all context/running apps. Also, I notices one time that a new session was kicked off in tty8 even though the one I killed was running from tty7. - I can't see any pattern regarding network (wired eth vs wlan vs. nothing) or power (battery vs. power supply) or running apps (other than the fact that Unity has been GUI/windowing manager) My T500 laptop has dual graphics adaptors; An internal Intel chip (which I am using, locked by the BIOS setup to save power and extend battery life) and a ATI Radeon adaptor (PCI) which I have disabled, and I've currently not loaded legacy drivers. It might be that the internal Intel chip is not acceptable for accelerating 3D graphics...however I never realised any problem with the previous Ubuntu 10 releases (however not using the effects very much) or with Windows 7 for that sake (the Aero effects). It seems to me that this problem is related to compiz, and also note that default kill will not actually do anything, it's necessary to add -9 to the kill entry to have any reaction. Thanks for a fantastic effort in order to deliver both a very good desktop Linux version and support! Brgds, /alfs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/778387 Title: Unity freezes when the desktop should be locked due to inactivity -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
