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0e1f616
(Get the code!)
I have tested with Karmic after upgrading from Jaunty via do-release-upgrade. Karmic up to date as of 10-02-2009.
I recently upgraded the BIOS to F21 firmware revision, this did not seem to have an effect on this issue.
I am still having this problem, I tested with pm-suspend and the KDE4 shutdown menu.
Of the 3 times I invoked suspend with pm-suspend from a virtual terminal (not from within X), 2 times the laptop failed to resume.
Of the 6 times I invoked suspend from the KDE4 shutdown menu, the laptop failed to resume once.
After enabling no_console_suspend I was able to briefly watch the output of pm-suspend before the system entered suspend mode. I noticed in all 3 cases that there appears to be a segfault or kernel oops that occurs just before the machine sleeps. I attempted to invoke 'pm-suspend > logfile' but after restarting the file is always empty (even if wake from suspend is successful).