zhao, forrest wrote:
Hi, Jeff I encountered a tricky problem. Let me described it from start. This morning I applied the "AHCI suspend/resume" patch against latest #upstream without much modification, then after a round of suspend/ resume, then system can't boot from AHCI mode, also can't boot from "enhanced mode with AHCI disabled". But it can boot from "compatible mode" with ata_piix driver to drive the hardware. So now I'm totally clueless about how to make AHCI mode come back to life. It seems that I need to trigger a low-level re-initialization of SATA controller. Have you ever met such weird behavior before?
Remove power, wait for a while, and re-apply power. Resume failure from memsleep puts my p5ld2 in a pretty weird state (POSTing hangs). Removing power helps in my case.
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