Bugzilla – Bug 732370
suspend-to-disk hangs and doesn't work
Last modified: 2012-01-13 20:37:57 UTC
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:8.0) Gecko/20100101 Firefox/8.0 When I suspend-to-disk from KDE it locks the screen, bring me to the console and after that my laptop is completely hangs. It doesn't copy memory pages to disk swap-partition, alt-sysrq doesn't respond. I have to use hard-reset. Linux epsilon 3.1.0-1.2-desktop #1 SMP PREEMPT Thu Nov 3 14:45:45 UTC 2011 (187dde0) i686 i686 i386 GNU/Linux Last messages from /var/log/messages at the moment of suspend. Nov 23 09:38:28 epsilon rsyslogd: -- MARK -- Nov 23 09:38:29 epsilon dbus-daemon[808]: **** /proc/self/mountinfo changed Nov 23 09:38:29 epsilon kernel: [ 3630.494184] PM: Marking nosave pages: 0000000 00009f000 - 0000000000100000 Nov 23 09:38:29 epsilon kernel: [ 3630.494190] PM: Basic memory bitmaps created Reproducible: Always Actual Results: system hangs Expected Results: should suspend to disk and power off pc. I don't know what kind of information about my PC is related to this bug, but I can provide it if will be requested.
Actually had the same experience with two new quad core M5A78L-M LE & FX-4100 systems, whereas on two older double core systems with exactly same software setup it worked always fine. After fiddling with the settings in /etc/suspend.conf it turned out that "compression=y" seems to cause the trouble. Neither "early writeout" nor "splash" affected the problem. Without compression, suspend to disk works on both new systems (whereas on the two systems it works regardless of the settings). So you might try whether "compression=n" cures the problem for you, too?
Unfortunately, I have the same behavior with "compression=n"
Duplicate *** This bug has been marked as a duplicate of bug 648742 ***