@kurt: I just forgot to change the status, thanks for pointing it out.
I've already corresponded with upstream kernel devs about the C-state
issues, who agreed that it looks like a BIOS problem, so I don't see any
benefit to filing a bug upstream.
@curtis: I suspect that workaround really just masks the underlying
problem. It's easy to show that sata compatibility _can_ work correctly
by using intel_idle.max_cstate=1. Perhaps there's some bad interaction
between sata mode and deep C-states that leads to the performance
issues. It still seems like the best solution is to pass nohz=off
highres=off though since it works around the suspend-to-RAM issues.
** Changed in: linux (Ubuntu)
Status: Confirmed => Won't Fix
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https://bugs.launchpad.net/bugs/601986
Title:
Disk driver problems on Toshiba NB305Netbook
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