Bug 10817 - COMRESET on resume where SATA link power management is enabled
Summary: COMRESET on resume where SATA link power management is enabled
Status: CLOSED CODE_FIX
Alias: None
Product: Power Management
Classification: Unclassified
Component: Hibernation/Suspend (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: power-management_other
URL:
Keywords:
Depends on:
Blocks: 7216
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Reported: 2008-05-29 03:35 UTC by Chris Jones
Modified: 2008-10-12 23:59 UTC (History)
7 users (show)

See Also:
Kernel Version: 2.6.24-17-generic
Subsystem:
Regression: ---
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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.
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