http://bugzilla.kernel.org/show_bug.cgi?id=12731
Summary: laptop can't resume after suspend to memory
Product: ACPI
Version: 2.5
KernelVersion: 2.6.26 - 2.6.29
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Sleep-Wake
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: ???
Earliest failing kernel version: 2.6.26 (didn't test with earlier versions)
reproduced in all major releases (up to 2.6.29-rc5)
Distribution: Debian/unstable + vanilla kernel
Hardware Environment: LG ED500 laptop
Problem Description: After suspend to memory, laptop is unable to resume.
Steps to reproduce:
there are 2 ways to reproduce:
1. as root:
# echo mem > /sys/power/state
wait few seconds while laptop enters sleep mode
press any key to wake it up
2. boot kernel with "test_suspend=mem" commandline parameter
kernel will suspend during boot
press any key, or just wait for timer event that will wake up the computer
Actual result:
in both cases screen remains blank (off), power and HDD leds light for about
two seconds, then computer just turns off completely.
Notes:
1. suspend/resume works fine with Windows XP
2. enabling resume tacing (echo 1>/sys/power/pm_trace) has no effect (no magic
number found in dmesg output on next boot after resume failure)
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