Good news, I've identified the problem (for details, see http://article.gmane.org/gmane.linux.acpi.devel/26955 ) and submitted a patch to the linux acpi developers that appears to have a good chance of getting accepted. Updated ubuntu kernel packages are provided in this thread (thanks to Matthew Thomas for uploading them, this was more than my paltry internet connection could handle).
I encourage everyone to test them: the 2.6.22 package is for gutsy, the 2.6.24 package for hardy (caveat: wacom support is currently broken in hardy if you update to xorg-7.3). -- Serial Wacom tablet fails to return from ACPI suspend to RAM https://bugs.launchpad.net/bugs/152187 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