[regression]: Toshiba ACPI driver corrupted since 2.6.17-8

[Ulrich Lukas]

Binary package hint: linux-image-2.6.17-9-generic

Hi!

On a Toshiba Satellite Pro 6000 notebook, when booting the latest distribution kernels available, 2.6.17-8-generic or 2.6.17-9-generic, the special ACPI subsystem for Toshiba laptops doesn't work any more. (E.g. the "toshset" utility "segfaults" when invoked, and the Fn-keys have no effect)

This is a regression, for it works under 2.6.17-7-generic (Knot-3 CD release).

This bug is important, sadly, because it renders the laptop unusable (i.e. the LCD brightness setting is stuck at the lowest possible value and thus the display not readable at even slightly elevated ambient lighting conditions, among other issues).

 Here is the output of dmesg for all kernels (I'm trying to attach these to this bug report, too):
http://datenparkplatz.de/DiesUndDas/dmesg.boot.messages.2.6.17-9-generic.txt
http://datenparkplatz.de/DiesUndDas/dmesg.boot.messages.2.6.17-8-generic.txt
http://datenparkplatz.de/DiesUndDas/dmesg.boot.messages.2.6.17-7-generic.txt

HTH,
Ulrich

[Stéphane Démurget (stephane-demurget-free)]

I've hot a Toshiba M30 and the paging fault completely prevents my system from starting! I had to blacklist the module for my system to boot up correctly... This is a serious regression.

[Stéphane Démurget (stephane-demurget-free)]

No, the stacktrace printed to my screen related is something along the lines of :

...
acpi_ac_init
acpi_bus_register_driver
...
BUG: soft lockup detected on CPU#0
...
acpi_button_init
acpi_bus_register_driver

It's more related to #62932 (Edgy kernel oops during bootup on toshiba laptop), but it's not the same stack either.

But it also occured after the update to the -9 kernel.
I can't attach my stacktrace because I don't find it in anything under /var/log, even after forcing to sync to disk. Can somebody point me to how to get a useful trace? Thanks.

[Fabian (fwin-deactivatedaccount)]

I have a Toshiba Satellite M30, and I can confirm this. Running 2.6.17-10-generic right now, and the display brightness won't change. Fnfx gives this error:
"fatal error: Could open /proc/acpi/toshiba/keys." [I think it should say "could _not_ open" ;)]

[Launchpad Janitor (janitor)]

The 18 month support period for Edgy Eft 6.10 has reached its end of life. As a result, we are closing the linux-source-2.6.17 Edgy Eft kernel task. However, development has already began for the upcoming Intrepid Ibex 8.10 release. It would be helpful if you could test the upcoming release and verify if this is still an issue - http://www.ubuntu.com/testing . If the issue still exists, please update this report by changing the Status of the "linux" task from "Incomplete" to "New". We appreciate your patience and understanding as we make this transition. Thanks!