The fact that resume always works when PM tracing is turned on (which just manipulates the RTC state to store the debug info) brought me to me the idea that the problem might be related to the RTC.
So I changed the /etc/acpi/sleep.sh script: <snip> # Generic preparation code . /etc/acpi/prepare.sh if [ x$DISABLE_DMA = xtrue ] && [ -b /dev/hda ]; then hdparm -d 0 /dev/hda fi # quirk (set hwclock) #echo 1 > /sys/power/pm_trace hwclock --set --date 1970/01/01 echo -n $ACPI_SLEEP_MODE >/sys/power/state </snip> And voilà: it works!!! (except that it still f***s with my hwclock) So the problem really seems to be related to the RTC. But why? Maybe this is about unhandled RTC interrupts? -- Resume from ACPI S3 does not work -- when waiting too long https://bugs.launchpad.net/bugs/162320 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
