Alistair Buxton, as documented at https://wiki.ubuntu.com/Bugs/Upstream/kernel bugzilla is typically not where developers prefer bugs are reported, as it is considered legacy.
Also, given that the upstream bug is Status: NEEDS INFO, you may get better traction filing a report following the above link to the appropriate mailing list (TO Rafael J. Wysocki and Len Brown CC linux- acpi). ** Description changed: To reproduce: - 1. Close laptop lid. 2. Wait a couple of minutes. 3. Open laptop lid. Result: the screen remains powered off and the system will not respond in any way. Pressing keys does nothing. Pressing the power button does nothing. There is no disk activity but the power light is lit. After exactly five minutes (to the second) the system resumes. + + Regression commit: + https://github.com/torvalds/linux/commit/a8d46b9e4e487301affe84fa53de40b890898604 + + WORKAROUND: Use kernel boot parameter: + noapictimer ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic] ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: al 1892 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 26 16:46:08 2016 HibernationDevice: RESUME=UUID=8623f57e-2fc2-4a9a-bd35-73f33e1aeb59 InstallationDate: Installed on 2016-04-21 (4 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 20040M18 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=0f83fbb5-4903-4610-9f32-1ab22c935bb0 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/11/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 24CN61WW dmi.board.name: Caucasus2 dmi.board.vendor: LENOVO dmi.board.version: Rev 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Lenovo dmi.chassis.version: Rev 1.0 dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0: dmi.product.name: 20040M18 dmi.product.version: Lenovo Ideapad S10-3t dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575250 Title: system takes exactly five minutes to wake from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1575250/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
