Bug 10817

Summary: COMRESET on resume where SATA link power management is enabled
Product: Power Management Reporter: Chris Jones (cmsj)
Component: Hibernation/SuspendAssignee: power-management_other
Severity: normal CC: akpm, bugs1k.noblesmith, htejun, jgarzik, kristen.c.accardi, shaohua.li, storvann+kernel
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.24-17-generic Tree: Mainline
Regression: ---
Bug Depends on:    
Bug Blocks: 7216    

Description Chris Jones 2008-05-29 03:35:54 UTC
Using Ubuntu 8.04 I get a slow resume from suspend with a COMRESET error for my drive if I have previously enabled sata link power management.

Does this explicitly need to be disabled before suspending, or should the kernel be handling this situation by explicitly waking up the link on resume?
Comment 1 Andrew Morton 2008-05-29 08:47:55 UTC
I guess this is a SATA problem.  Perhaps ALPM?
Comment 2 Chris Jones 2008-10-10 10:16:16 UTC
It is indeed ALPM, and having moved from 2.6.24 to 2.6.27, the problem has gone away.
Comment 3 Tejun Heo 2008-10-12 23:59:24 UTC
Yeah, prefer-COMRESET patch must have fixed this problem.