** Attachment added: "dmesg_first.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552216/+attachment/4586533/+files/dmesg_first.txt
-- 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/1552216 Title: Laptop hangs during second time it suspends Status in linux package in Ubuntu: New Bug description: When I want to suspend my computer for the second time it hangs. It does not react to any keyboard input or the power button. The only way to recover is to hold the power button several seconds to reboot the computer. I followed the procedure mentioned at https://wiki.ubuntu.com/DebuggingKernelSuspend. To reproduce I first completely suspend the laptop, e.g. by closing the lid or by using the pm-suspend command. After wakeup from suspend I start following the procedure. At the step where the command "echo devices > /sys/power/pm_test" is given the laptop hangs during suspend. It does not reach suspended state, as the power remains on. On reboot, the Magic number says: "memory memory48: hash matches" I have a HP Pavilion 15 laptop with an Intel Skylake processor. I have experienced this on kernel 4.2.0 (Ubuntu 4.2.0-30.35-generic 4.2.8-ckt3), but also on kernels 4.4.1 an 4.4.3 (taken from mainline kernel release). After installation of 15.10 I made the following changes for hardware support: - I installed rtlwifi-new-dkms from http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu/. This has support for antenna selection which my wifi requires (auto selection does not work, I use parameter ant_sel for module rtl8723be) - I installed nvidia-352-updates and bumblebee to support the graphics card - I use kernel parameter pci=noaer to avoid dmesg being flooded with the same message (see bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1521173) I upgraded to the latest BIOS. One thing I noticed is that there is a difference between before the first suspend and after the first suspend to the contents of cat /proc/acpi/wakeup > wakeup. After the boot, and before the first suspend this line is reported: PXSX S5 *disabled pci:0000:04:00.0 After the first suspend and resume this line becomes: PXSX S5 *enabled pci:0000:04:00.0 If I read lspci correctly device 0000:04:00.0 is "Signal processing controller [1180]: Intel Corporation Device [8086:1903] (rev 08)" Thanks for looking into this. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-30-generic 4.2.0-30.35 ProcVersionSignature: Ubuntu 4.2.0-30.35-generic 4.2.8-ckt3 Uname: Linux 4.2.0-30-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jan 4087 F.... pulseaudio CurrentDesktop: KDE Date: Wed Mar 2 13:12:42 2016 HibernationDevice: RESUME=UUID=321acbbf-9a6a-4825-8f47-a89d56536272 InstallationDate: Installed on 2016-02-03 (27 days ago) InstallationMedia: Error: [Errno 13] Permission denied: '/var/log/installer/media-info' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0bda:b006 Realtek Semiconductor Corp. Bus 001 Device 002: ID 0bda:57eb Realtek Semiconductor Corp. Bus 001 Device 006: ID 0461:4d03 Primax Electronics, Ltd Kensington Mouse-in-a-box Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: HP HP Pavilion Notebook ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-30-generic.efi.signed root=UUID=43cbb8c2-c0ce-40e2-a795-3a506e63d450 ro quiet splash pci=noaer vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-30-generic N/A linux-backports-modules-4.2.0-30-generic N/A linux-firmware 1.156 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/18/2015 dmi.bios.vendor: Insyde dmi.bios.version: F.77 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 80A4 dmi.board.vendor: HP dmi.board.version: 91.1C dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.77:bd12/18/2015:svnHP:pnHPPavilionNotebook:pvrType1ProductConfigId:rvnHP:rn80A4:rvr91.1C:cvnHP:ct10:cvrChassisVersion: dmi.product.name: HP Pavilion Notebook dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552216/+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
