Also, we can perform a kernel bisect to identify the commit that introduced this regression. We would first need to identify the last "Good" kernel and the first "Bad" one.
Can you test the following kernels and post which ones exhibit the bug and which do not: 3.19 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-vivid/ 4.0 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/ 4.1 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-unstable/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1485223 Title: Ubuntu 15.10-dev: ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State Status in linux package in Ubuntu: Confirmed Bug description: The following erorr occured on First boot into Ubuntu 15.10-Nightly: ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20150410/hwxface-580) LSB_version: Description: Ubuntu Wily Werewolf (development branch) Release: 15.10 There was another ACPI error that occurred, not sure if it's directly related: ACPI:\ Failed to implement _DSM (0x1001) i'm currently testing all ACPI functions (shutdown, Hibernate,. ETC.) but wanted to report this first. this seems like a serious issue. i've attached: Kernel Log FIle (/var/log/kern.log) Output from uname -r output from dmicode output from lspci -vvff tar of ACPI directory --- ApportVersion: 2.18-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: testusr 1632 F.... pulseaudio /dev/snd/controlC1: testusr 1632 F.... pulseaudio DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=df53ef11-a582-4795-81e6-4666c7ba9eb7 InstallationDate: Installed on 2015-08-15 (0 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150815.1) IwConfig: enp4s0 no wireless extensions. lo no wireless extensions. MachineType: Gateway FX6840 Package: linux (not installed) ProcEnviron: LANGUAGE=en_US TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.1.0-3-generic root=UUID=2244254b-eee5-4fa6-bb16-d4e811b01f42 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.1.0-3-generic N/A linux-backports-modules-4.1.0-3-generic N/A linux-firmware 1.146 RfKill: Tags: wily UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 4.1.0-3-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 05/17/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P01-A3 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: FX6840 dmi.board.vendor: Gateway dmi.chassis.type: 3 dmi.chassis.vendor: Gateway dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP01-A3:bd05/17/2010:svnGateway:pnFX6840:pvr:rvnGateway:rnFX6840:rvr:cvnGateway:ct3:cvr: dmi.product.name: FX6840 dmi.sys.vendor: Gateway To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485223/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp