I also have a T42 and recently upgraded to 10.10 from 10.04 and had the same problem - on resume I would have a TTY login appear, but no recognition of the keyboard. I would hold the power button and force the laptop to restart or shutdown.
If you follow the diagnostic process on this wiki: https://wiki.ubuntu.com/X/Troubleshooting/Other - it is clear that the problem is not fixed by changing the kernel. Here is the relevant list of commands from the wiki that I tried to determine this: "Log out of X, and log into the console, and try suspend/resume (or hibernate, or whatever) from there Running /etc/acpi/hibernate.sh or /etc/acpi/sleep.sh should do it If it does not come up ok, the failure is in the kernel rather than X Test if caps lock works; whether this works determines how bad the kernel failure is" I did that and it does come up ok, so the problem is with X since the upgrade, not the new kernel. (Before determining this, I tried various kernel versions 2.6.32, 2.6.35-22, 2.6.36 and the problem remained.) What 'fixed' the problem for me was editing "/etc/default/acpi-support" I changed the SUSPEND_METHODS="XXXXX" line to another method. It doesn't seem to matter which, I have tried both SUSPEND_METHODS="dbus-hal" and SUSPEND_METHODS="none" and after logging out and back in, resume works after suspend. I can't explain why this works, since I have gnome-power-manager daemon running, and I choose suspend from the gnome desktop menu, which invokes this daemon for suspending. The acpi-support SUSPEND_METHODS setting should not have any effect, but changing it clearly does fix the problem. I still briefly see the following error when resuming, but X restarts ok and the desktop is back to its previous state: pm_op(): pci_pn_resume+0x0/0xa0 returns -16 PM: Device 0000:00:00.0 failed to resume async: error -16 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/681752 Title: [IBM T42] Cannot resume after suspend -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
