[Bug 191137] Re: [Hardy] ACPI Embedded Controller (EC) stops boot when kernel boot 'quiet' option is enabled or AC power is connected

[TJ]

I've done a few restarts with 2.6.26-rc9 (Intrepid) without incident.

I tried adding "acpi_serialize" to the kernel command line for 2.6.24-19
and it *seemed* to improve matters but then the system experienced a
later lock which may or may-not have been related. I tried "max_cpus=1"
on the basis that scheduling across SMP cores might be an issue but the
failure still occurred.

I've also been looking at the changes to the (Group) CPU Scheduler
between 2.6.22 .. 2.6.24 and 2.6.24 .. 2.6.26 since (and specifically
the differences in the kernel .config files between Gutsy, Hardy,
Intrepid, and main-line). If the theory about timing is highlighting a
concurrency issue, the cause might be nowhere near the ACPI code.

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[Hardy] ACPI Embedded Controller (EC) stops boot when kernel boot 'quiet' option is enabled or AC power is connected
https://bugs.launchpad.net/bugs/191137
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