I can reliably reproduce this on a Thinkpad X300, and it is mentioned at
http://www.thinkwiki.org/wiki/How_to_reduce_power_consumption#SATA_Link_Power_Management
My assumption is that the kernel should be putting the link back into full
power before it suspends - or be able to detect that the link is in low power
mode on resume, and handle it appropriately.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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COMRESET failure when sata link power management policy is set to min_power on
thinkpad T61
https://bugs.launchpad.net/bugs/234047
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