This bug also affects me. Asus P8H67-V motherboard, BIOS version 0806 Ubuntu 11.10 32-bit 3.0.0-12-generic-pae External NVidia 250 GTS GPU
booting linux with init=/bin/bash (i.e. no GPU/USB3 modules loaded, and typing echo mem > /sys/power/state will suspend the system successfully, but upon resume the system will reboot 2-3 times and then hang with blank screen. Tried also echo 1 > /sys/power/pm_trace echo mem > /sys/power/state Same results, and found no "hash matches" in dmesg log (this done with init=/bin/bash too). Actually, the RTC time was still set correctly. So did it crash before any checkpoint was reached? Also tried to set memory_corruption_check_size=128K (also 256K) on kernel command line, but no effect. All /sys/power/pm_test tests work fine, in both mem and disk modes. So, to me this bug seems to be somewhere in passing control from BIOS from linux resume handler. Could be very well a bug in BIOS. Haven't tried windows suspend yet. Hope this is of some help. I can provide more details if needed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/760842 Title: Natty Narwhal/Sandy Bridge Suspend Fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/760842/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
