Lucid+Thinkpad X100e hangs on switch to battery
I've just installed x86_64 Lucid on a Lenovo Thinkpad X100e. On mains power it works fine but when I either switch to battery or attempt to boot on battery it hangs.
I understand the general principle of ACPI but I'm unsure how to go about diagnosing the problem.
I guess the starting point would be to completely disable everything that happens when the power state changes and verify that it doesn't then hang.
I'm not going to file a bug until I've characterized the problem - but some help with how to get started with an investigation would be greatly appreciated.
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