Did some testing yesterday as per https://wiki.ubuntu.com/DebuggingKernelSuspendHibernateResume .
I can reproducibly get the hangup after 4-6 suspend/resume cycles, also from VT1 (using sudo pm-suspend). It does not matter whether I'm logged in to X or not, or how much memory is in use (tested by starting 2Gig Vbox Windows). In most cases, the screen first blanks and then the freeze occurs. In one case, the freeze was first, and I could catch the kernel oops - see attached blurry photo (blame Samsung for the crappy camera in the Galaxy Mini). I'm assuming the other cases also involve an oops, but not visible. In both cases, the emergency sync hotkey (Ctrl+Alt+SysReq+S) does not trigger disk activity, and caps-lock is unresponsive (which are about the the only feedbacks one might still get with a blanked screen). Also, when resuming after suspend from VT1, the screen remains blank till I switch to VT7 (X). In several cases, I saw a 'Battery Critical, going to Hybernate' message, though my battery at that moment was still >60%. In one case, after the Battery Critical, I got the oops. In another case, I got a spontaneous reboot. In yet another case, it actually did hibernate. But in most cases, there was only the message and no hybernation... I've captured dmesg three times after boot after the freeze. 1) after Battery Critical -> kernel oops; suspend/resume 4 times from VT1 while logged in on X 2) after black screen and freeze (could be another oops); suspend/resume 5 times from VT1 while not logged in on X 3) after spontaneous reboot; suspend/resume 4 times from VT1 while not logged in on X ** Attachment added: "screen photo of kernel oops" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/887171/+attachment/2589170/+files/2011-11-07%2018.24.46.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/887171 Title: [Hewlett-Packard HP EliteBook 6930p] suspend/resume failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/887171/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
