Public bug reported: I have noticed that after I use the computer for some time the system isn't able to detect that the power cord was unplugged. Power Manager's icon doesn't change and doesn't switch into powersave mode.
At the same time, the special keys on the laptop stop working (mute, volume up, volume down). I have power on password set in the laptop's BIOS and occasionally the situation goes so bad that the keyboard is not functioning at startup and I am unable to enter the password. To resolve this situation, I have to shut down the computer, unplug the power cord and remove the battery. This workaround helps until the next reboot. It seems that this problem is triggered at shutdown. I have searched the (k)ubuntu pages and googled around and found out that other people have similar problems. They seem to be related to a kernel module psmouse. http://www.ubuntuforums.org/showthread.php?t=326491 I tried a workaround to unload the kernel module psmouse on shutdown which seems to resolve the problem. Hardware details of HP Compaq nw8440: $ cat /var/lib/acpi-support/*-* 68YVD Ver. F.0F Hewlett-Packard HP Compaq nw8440 (RH415EA#ABB) F.0F Kernel version: $ uname -a Linux mk 2.6.20-6-generic #2 SMP Wed Jan 31 20:53:39 UTC 2007 i686 GNU/Linux $ dpkg -l | grep linux-image ii linux-image-2.6.20-6-generic 2.6.20-6.11 Linux kernel image for version 2.6.20 on x86 ii linux-image-generic 2.6.20.6 Generic Linux kernel image I am running Kubuntu Feisty Fawn with packages as of 1st February 2007. ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed -- Laptop doesn't detect unplugged AC power, special keys stop working https://launchpad.net/bugs/82681 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
