Public bug reported: As documented in bug 1427942: I do reproduce this on a ThinkPad T420s. Previous version installed (14.04) did work pretty well for this.
dmesg when closing/opening with kernel "Linux alex-ThinkPad-T420s 3.19.0-7-generic #7-Ubuntu SMP Thu Feb 26 20:19:34 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux": [ 94.842668] systemd-logind[1262]: Lid closed. [ 102.468204] systemd-logind[1262]: Lid opened. [ 102.468661] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [ 124.075694] systemd-logind[1262]: Removed session c1. The i915 seems to be unrelated: it appears after the lid is opened again, and "pci=noacpi" makes it disappear but the bug stays. Kernel 4.0 do not help. There is no issue with a 14.10 ; and upgrading 14.10 to 15.04 exposes the issue. I managed to got it to work, after playing with the e1000e driver as suggested on https://bbs.archlinux.org/viewtopic.php?pid=1414261#p1414261 The current state is: - doing nothing, e1000e loaded, it never goes to suspend when I close the lid (tried 5 times) - removing e1000e, goes to suspend when I close the lid - doing nothing, e1000e removed, it again cannot go to suspend when I close the lid - loading e1000e, goes to suspend when I close the lid And of course, manually suspending does work. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: kernel-bug-exists-upstream ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1429489 Title: Suspend not working when closing lid on ThinkPad T420s To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1429489/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
