Nils, what the actual failure mode on a bad kernel? Do you have dmesg output?
-- 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/1699004 Title: APST gets enabled against explicit kernel option Status in linux package in Ubuntu: Confirmed Bug description: I have a Lenovo ThinkPad X270 with a Toshiba nvme SSD $ sudo nvme list Node SN Model Namespace Usage Format FW Rev ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 177S10WYTAMT THNSF5256GPUK TOSHIBA 1 256.06 GB / 256.06 GB 512 B + 0 B 51025KLA I was affected by this bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184?comments=all before. After disabling APST by adding "nvme_core.default_ps_max_latency_us=0" in /etc/default/grub, the bug went away. Since yesterday, however the bug has returned, with the system dying with I/O errors after an hour or so. I verified, that the kernel option is still being set $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.10.0-22-generic.efi.signed root=UUID=365f1a9c-9598-4ad5-a387-d02f771767a1 ro quiet splash nvme_core.default_ps_max_latency_us=0 vt.handoff=7 however it turns out that it is being ignored for some reason, and running $ sudo nvme get-feature -f 0x0c -H /dev/nvme0 reports that APST is enabled. I can successfully disable it manually using $ sudo nvme set-feature -f 0x0c -v=0 /dev/nvme0 and the problem goes away. However, after any reboot and even after waking the system from suspend, it is reenabled, causing the system to crash after a short while. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-22-generic 4.10.0-22.24 ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15 Uname: Linux 4.10.0-22-generic x86_64 ApportVersion: 2.20.4-0ubuntu4.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: maeher 1669 F...m pulseaudio /dev/snd/controlC0: maeher 1669 F.... pulseaudio CurrentDesktop: Unity:Unity7 Date: Mon Jun 19 23:29:31 2017 InstallationDate: Installed on 2017-04-17 (64 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: LENOVO 20HN001RUS ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-22-generic.efi.signed root=UUID=365f1a9c-9598-4ad5-a387-d02f771767a1 ro quiet splash nvme_core.default_ps_max_latency_us=0 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-22-generic N/A linux-backports-modules-4.10.0-22-generic N/A linux-firmware 1.164.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/16/2017 dmi.bios.vendor: LENOVO dmi.bios.version: R0IET30W (1.08 ) dmi.board.asset.tag: Not Available dmi.board.name: 20HN001RUS 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:bvrR0IET30W(1.08):bd01/16/2017:svnLENOVO:pn20HN001RUS:pvrThinkPadX270:rvnLENOVO:rn20HN001RUS:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20HN001RUS dmi.product.version: ThinkPad X270 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1699004/+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
