2.4.0 APM w/ Compaq 16xx laptop...
Anyone get this working? If so please tell me the version of you APM utilities and what Power Management options you have on in the kernel.
Ever since I started trying 2.3.x, as soon as the box gets a change in it's power status (even just an update of the % battery) Linux locks solid. It's 100% repeatable.
In particular this is a Compaq Presario 1670. If I remove APM from the kernel it runs perfectly... but no APM on a laptop really sucks.
Brian Macy
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Quoted 6 lines · Brian Macy
Anyone get this working? If so please tell me the version of you APM utilities and what Power Management options you have on in the kernel.
Ever since I started trying 2.3.x, as soon as the box gets a change in it's power status (even just an update of the % battery) Linux locks solid. It's 100% repeatable.
Sounds like the kernel is using ACPI reserved memory, so the first ACPI event corrupts kernel memory and the kernel locks up.
I've seen similar problems with an IBM ThinkPad 600X, but it was fixed somewhere in 2.4.0-pre12-test7. Try linux-2.4.0, if that doesn't work, boot the kernel with "mem=1MB-less-than-the-machine-actually-has", so for a 128MB machine, try "mem=127M".
Erik
Signature · 9 lines
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department of Electrical Engineering, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635 Fax: +31-15-2781843 Email: [email protected] WWW: http://www-ict.its.tudelft.nl/~erik/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] Please read the FAQ at http://www.tux.org/lkml/
Thanks for the suggestion. Actually got around to trying it... didn't work. But the other thing is that the laptop doesn't support ACPI, just APM.
Brian Macy
Quoting Erik Mouw <[email protected]>:
Quoted 22 lines · Brian Macy
Quoted 1 line
Anyone get this working? If so please tell me the version of you APM
utilities
Quoted 3 lines
and what Power Management options you have on in the kernel.
Ever since I started trying 2.3.x, as soon as the box gets a change in
it's
Quoted 1 line
power status (even just an update of the % battery) Linux locks solid.
It's 100%
Quoted 1 line
repeatable.
Sounds like the kernel is using ACPI reserved memory, so the first ACPI event corrupts kernel memory and the kernel locks up.
I've seen similar problems with an IBM ThinkPad 600X, but it was fixed somewhere in 2.4.0-pre12-test7. Try linux-2.4.0, if that doesn't work, boot the kernel with "mem=1MB-less-than-the-machine-actually-has", so for a 128MB machine, try "mem=127M".
Erik
Quoted 12 lines
--
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands
Phone: +31-15-2783635 Fax: +31-15-2781843 Email:
[email protected]
WWW: http://www-ict.its.tudelft.nl/~erik/
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/