Public bug reported: I am using an Intel D945GCLF2 motherboard with the dualcore hyperthreading Atom 330 processor.
Everything seems to be working fine so far, except suspend-to-RAM. Suspend-to-RAM (ACPI S3) is explicitly supported by that motherboard, I just upgraded to the latest BIOS version (0122), power-management-option in BIOS "ACPI Suspend" is set to "S3 State" (the other selectable option is "S1 State"). Testing with Ubuntu 8.10, once I initiate pm-suspend the computer is gone to sleep within a few seconds, and it's definitely correctly sleeping (and not just off), because it can be woken up by pressing any button on a connected PS/2 keyboard (in addition to using the power button), which is not the case, if the computer is powered off (then it can only be switched on with the power button). The problem is now, that it can not be woken up correctly. Once a button on the keyboard or the power button is pressed, I can see the LED on the CDROM drive flash several times (as if it's searching for something on a CDROM), and after a few seconds the computer starts to boot normally, as if it was not sleeping, but just switched off. It kind of seems, as if the kernel segfaults on resume and then resets the machine, which results in a normal boot, but I can't really tell, because during the failed resume I have no output on screen, and then it is just followed by a normal boot process. I understand, that such a problem is very hard to debug, because it just can not be analyzed, what's going on during such a failing resume. I already searched the web, and found the Sleep Quirk Debugger Page at http://people.freedesktop.org/~hughsient/quirk/quirk-suspend- advanced.html. I followed the shown instructions: $ echo 1 > /sys/power/pm_trace $ pm-suspend but checking dmesg after a failed resume and following reboot just gives this: $ dmesg | grep -i matches [ 2.836980] bdi 1:15: hash matches and I have no idea, what that means (it does not look like the example shown on the mentioned webpage). Can anybody with an Intel D945GCLF or D945GCLF2 motherboard please check, if suspend-to-RAM results in the same problem on resume, as described, and report back? I am confident, that this is a general issue, because I tried it with a stock Ubuntu 8.10 installation (minimal-install using the alternate CD with "install a commandline-system"), and the Ubuntu 8.10 Desktop LiveCD (both 32bit). It's just strange, that I could not find any info on resume problems for that motherboard searching the internet. ** Affects: ubuntu Importance: Undecided Status: New -- Intel D945GCLF2 Motherboard: Unable to use suspend-to-RAM, resume broken https://bugs.launchpad.net/bugs/304457 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
