Red Hat Bugzilla – Bug 486899
"echo disk>/sys/power/state " cause kernel panic when system trying to sleep down
Last modified: 2009-07-31 08:38:49 EDT
Created attachment 332896 [details] the trace about kernel panic and system info Description of problem: "echo disk>/sys/power/state " cause kernel panic when system trying to sleep down Version-Release number of selected component (if applicable): Linux localhost.localdomain 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:14 EST 2007 x86_64 x86_64 x86_64 GNU/Linux How reproducible: easy to reproduce Steps to Reproduce: 1.Fresh install RHEL50 x86_64 on SATA Disk 2.echo disk>/sys/power/state 3.kernel panic when system is tring to sleep down Actual results: system Kernel Panic Expected results: Sleep down Additional info: Build vanila kernel 2.6.18 and do the same test, system can sleep down normally. Motherboard: ASUS M2N32-SLI
Hello, I did a quick test on x86_64 system with RHEL 5.3 (2.6.18-128.el5) on a SAS disk, the suspend/resume worked correctly. However, when I installed and booted the 2.6.18-8.el5 kernel the system did get a softlockup during suspend, this is more likely a power management or acpi bug rather than a sata bug. I will need to review the power management and acpi changes between the -8.el5 kernel and the -128.el5 kernel, it is very possible that the problem you are seeing has been addressed in a later kernel.
Suggest you try the 5.3 kernel as well to see if the problem still occurs. Per comment #1, it appears this may have been fixed. Please report results here. There were major changes in the power management code in 5.1 to support notebooks and minor changes in 5.2 and 5.3 as well.
DUPing to bug 490192 since this is where all the activity has occurred. *** This bug has been marked as a duplicate of bug 490192 ***