Okay, Since updating the BIOS of my Lenovo T460s laptop from version 1.15 to 1.20, I've not seen this issue once.
Since I've not been able to successfully reproduce the error at any point, I can't say for sure that the problem is gone. It has been a weeks time, however, which is certainly a first. I'm happy to close this bug at this time, marking it a hardware/firmware issue. /Thomas -- 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/1641322 Title: frequently lost connection to nvme Status in linux package in Ubuntu: Confirmed Bug description: Since before the release of Yakkety Yak, I've been having problems with a new laptop with a Samsung nvme device: 05:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a804 (prog-if 02 [NVM Express]) For whatever reason, I sometimes (often) loose connection to the device, causing the entire system to stop working until a powercycle has been completed. I can go a full day without having the problem - Just as I can have an entire night of the system just refusing to be stable for long enough to be usable. I've tried with official kernels and mainline kernels of 4.8 and 4.9 versions of the kernel, but all show the exact same problem at one point or another. I'm aware that this COULD be a hardware-related issue, but have no real way to be certain at this point. The system is a brand new Lenovo ThinkPad T460s. Dmesg always shows the following few lines, in association with the error: kern :warn : [Nov12 03:34] nvme 0000:05:00.0: Failed status: 0xffffffff, reset controller. kern :warn : [ +0,017726] pci_raw_set_power_state: 40 callbacks suppressed kern :info : [ +0,000004] nvme 0000:05:00.0: Refused to change power state, currently in D3 kern :warn : [ +0,000091] nvme nvme0: Removing after probe failure status: -19 kern :info : [ +0,000013] nvme0n1: detected capacity change from 1024209543168 to 0 ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-27-generic 4.8.0-27.29 ProcVersionSignature: Ubuntu 4.8.0-27.29-generic 4.8.1 Uname: Linux 4.8.0-27-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: thms 1592 F.... pulseaudio CurrentDesktop: GNOME Date: Sat Nov 12 11:59:50 2016 HibernationDevice: RESUME=UUID=aeb50d49-fb7a-4e4c-928c-582e6a77ad7e InstallationDate: Installed on 2016-10-15 (28 days ago) InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Release amd64 (20161012.1) MachineType: LENOVO 20FAS43T00 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-27-generic.efi.signed root=UUID=881c937d-6215-43a5-b57a-257adaee046b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-27-generic N/A linux-backports-modules-4.8.0-27-generic N/A linux-firmware 1.161 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/08/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1CET47W (1.15 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FAS43T00 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1CET47W(1.15):bd08/08/2016:svnLENOVO:pn20FAS43T00:pvrThinkPadT460s:rvnLENOVO:rn20FAS43T00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FAS43T00 dmi.product.version: ThinkPad T460s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1641322/+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
