intrepid acpi issues on thinkpad x300

[Jon Oberheide]

Upon upgrading to the Intrepid alpha from Hardy, a significant amount of ACPI functionality has failed on my Lenovo Thinkpad X300.

Event that still work (seen by acpi_listen):
- ac adapter / battery
- button/lid (although suspend is not triggered as expected on close)
- ibm/hotkey for lcd brightness (although brightness is not actually adjusted)
- ibm/hotkey for thinkvantage button

Events that no longer work:
- power button
- volume up/down hotkeys
- cannot wake up from suspend via any hotkeys/lid

I'd be happy to include any other desirable information to help diagnose and fix the issue. The lack of events coming to acpid seems like a kernel or thinkpad-acpi issue but the lack of suspend-on-close and brightness adjustment seem to be userspace problems (acpi-support?).

Regards,
Jon Oberheide

[Nick Ellery (nick.ellery)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please include the information requested at https://wiki.ubuntu.com/DebuggingACPI as separate attachments.

[Jon Oberheide (jon-oberheide-deactivatedaccount)]

The requested ACPI information has been attached.

[Leann Ogasawara (leannogasawara)]

The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would appreciate it if you could please test this newer 2.6.27 Ubuntu kernel. There are one of two ways you should be able to test:

1) If you are comfortable installing packages on your own, the linux-image-2.6.27-* package is currently available for you to install and test.

--or--

2) The upcoming Alpha5 for Intrepid Ibex 8.10 will contain this newer 2.6.27 Ubuntu kernel. Alpha5 is set to be released Thursday Sept 4. Please watch http://www.ubuntu.com/testing for Alpha5 to be announced. You should then be able to test via a LiveCD.

Please let us know immediately if this newer 2.6.27 kernel resolves the bug reported here or if the issue remains. More importantly, please open a new bug report for each new bug/regression introduced by the 2.6.27 kernel and tag the bug report with 'linux-2.6.27'. Also, please specifically note if the issue does or does not appear in the 2.6.26 kernel. Thanks again, we really appreicate your help and feedback.

[Chris Jones (cmsj)]

fwiw, I have an X300 running Intrepid with the 2.6.27 kernel and my volume keys do work. The power button doesn't cause anything to happen, but I'm not sure if it ever did, I don't tend to use that feature.

[Jon Oberheide (jon-oberheide-deactivatedaccount)]

All of the kernel-related ACPI issues described have been resolved in 2.6.27 for me. The LCD brightness controls are still not working but appears to be a userspace issue as the events are properly being received by acpid. I'll look into those separately, but for now, we can close this bug.

[Leann Ogasawara (leannogasawara)]

Thanks Jon, marking this "Fix Released" for Intrepid.