The suggested kernel patch pointed to by kurt (http://lkml.org/lkml/2007/5/8/510) was added to the mainline kernel in 2.6.22.2 and is in Gutsy.
Therefore if this issue is still occurring on Gutsy Tribe-5 we need to look more closely. Please attach the DSDT of the system using: $ sudo apt-get install acpidump $ sudo acpidump -b -t DSDT -o MODEL-BIOSVERSION.aml $ tar -cjvf MODEL-BIOSVERSION.aml.tar.bz2 MODEL-BIOSVERSION.aml replacing MODEL and BIOSVERSION with your PCs specific values. -- ACPI: Error installing notify handler https://bugs.launchpad.net/bugs/93230 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs