Most recent kernel where this bug did not occur: Distribution: Hardware Environment: IBM Thinkpad X31 Software Environment: Linux-2.6.18-git22 Problem Description: System enters sleep and then does not wake up. In the old kernel system would sleep, then wake up when the power button was pushed, but it would shut down immediately afteward because the power down event was not ignored. Steps to reproduce: 1) echo "mem" >/sys/power/state system goes to sleep 2) press power button system appears to be waking up, but then nothing happens, screen remains blank 3) press power button again nothing happens.
What is "the old kernel"? IOW, what was the last working kernel?
2.6.18 worked fine and 2.6.18-git22 fails to wake on power button press? Curious, because there have been no ACPI-related patches between these releases. Any chance you can do a git-bisect?
2.6.17-gentoo-r8 "worked", it was broken in 2.6.18-gentoo, and then I upgraded to the latest kernel to see if the bug was still present (which it is). I put "worked" in quotation marks because resume never really worked. That is to say that the computer would come back to life, but the power button push event wasn't trapped, so it would immediately enter runlevel 0 upon resume.
Is this still a problem in linux-2.6.22.stable or later?
Please reopen this bug if it's still present with kernel 2.6.22.