Another update regarding the the system slowdown. It seems it was caused by starting "Ubuntu on Wayland" from the main screen. (had to do so previously to be able to login). So it seems unrelated to the APST issue.
Should I repeat the tests with different latency again? How dangerous is it for me to manually change from Kernel 4.15.18 to the suggested v5.10-rc3? As this is my workstation, I am reluctant on breaking my system entirely. -- 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/1903388 Title: Failure to write to NVMe disk soon after boot (APST-related) Status in linux package in Ubuntu: Incomplete Bug description: Hi all, This one is similar to #1805816 and #1678184 (one was fixed, other closed). Symptoms: During regular use, system starts failing after 10m - 1hr after start. Icons start disappearing, writing to disk fails. In-memory operations still work for a while (switching windows, streaming video calls, typing). After some time the entire system crashes, with a Black Screen Of Death constantly looping: --------------------------- EXT4-fs error (device nvme0n1p5) ext4_find_entry:1455: inode #4594258: comm gmain: reading directory lblock 0 [... same repeats for 8 times on average] systemd-journald[439]: Failed to write entry (9 items, 270 bytes), ignoring: Read-only file system [... repeats for 10 times on average] --------------------------- Probable causes: Updated both kernel and BIOS 2 days ago. Unable to determine, which one caused the change. Don't know how to determine which kernel and bios I was running before the update. Looks like APST issue, based on info from web and previous bug reports. Verification: Created a rudimentary bash script, writing to a file in a loop, incrementing timeout between two consecutive writes each time. Ran script using: - different nvme_core.default_ps_max_latency_us settings in GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvme_core.default_ps_max_latency_us=[0|200|5500]" - regular boot mode - logged in to account - on battery power With default_ps_max_latency_us NOT SET: writing FAILS between 57 and 70 seconds timeout between writes With default_ps_max_latency_us=5500: no write failure during 1hrs run With default_ps_max_latency_us=200: no write failure during 30m run With latency 0: no write failure during 10m run This suggests an APST issue. Machine: Lenovo Thinkpad T570 Disk: SAMSUNG MZVLB512HAJQ-000L7 512 GB (512110190592 bytes) Firmware: 3L2QEXA7 Serial#: S3TNNE0K119126 System: OS 1: Ubuntu 18.04.5 LTS Kernel: 4.15.0-122-generic #124-Ubuntu SMP Thu Oct 15 13:03:05 UTC 2020 x86_64 OS 2: Windows 7 (on a separate partition on same disk, dualbooted with grub). Actions taken: Successfully checked the partitions for errors by running "Check partition" and "Repair partition" in Disks utility in Ubuntu, running from a bootable USB. Starting in "recovery mode" yields an error (among other suspicious behavior): -------------------- sd 0:0:0:0: Attached scsi generic sg0 type 0 sd 0:0:0:0: [sda] Attached SCSI removable Disk input: TPPS/2 IBM TrackPoint as /devices/platform/18042/serio1/serio2/input/input .... nvme nvme0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0x10 nvme 0000:40:00.0: enabling device (0000 -> 0002) nvme nvme0: Removing after probe failure status: -19 nvme0n1: detected capacity change from 512110190592 to 0 print_req_error: I/O error, dev nvme0n1, sector 1000215040 nvme nvme0: failed to set APST feature (-19) Waiting for suspend/resume device ... Begin: Running /scripts/local-block No devices listed in conf file were found. No devices listed in conf file were found. [repeats] -------------------- Without nvme_core.default_ps_max_latency_us set: writing fails between cca. 57 - 70, on battery. With nvme_core.default_ps_max_latency_us=5500: FIXES THE PROBLEM. With nvme_core.default_ps_max_latency_us=200: FIXES THE PROBLEM. With nvme_core.default_ps_max_latency_us=0: FIXES THE PROBLEM. Previous behavior on same machine: Same OS, with a previous Kernel has been running perfectly fine for the last year, "on high revs" (it's a development machine). Often running on battery alone. sleep and wakeup without issues. It is running Windows 7 (dual booted) without issues. Misc info: To test different settings, did 'sudo nano /etc/default/grub' with each of these settings: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvme_core.default_ps_max_latency_us=5500" # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvme_core.default_ps_max_latency_us=200" # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvme_core.default_ps_max_latency_us=0" followed by 'sudo update-grub' and reboot. Related bugs (links): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805816 --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.17 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: vanjad 2707 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=23ec2501-e6b9-41c8-84ae-7098b3721cc9 InstallationDate: Installed on 2018-05-30 (892 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: LENOVO 20H9004HSC NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-122-generic root=UUID=d28c5695-65bc-4c81-ac20-0a8291f03147 ro quiet splash nvme_core.default_ps_max_latency_us=0 vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-122.124-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-122-generic N/A linux-backports-modules-4.15.0-122-generic N/A linux-firmware 1.173.19 Tags: wayland-session bionic Uname: Linux 4.15.0-122-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip docker libvirt lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/03/2019 dmi.bios.vendor: LENOVO dmi.bios.version: N1VET52W (1.42 ) dmi.board.asset.tag: Not Available dmi.board.name: 20H9004HSC 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:bvrN1VET52W(1.42):bd12/03/2019:svnLENOVO:pn20H9004HSC:pvrThinkPadT570:rvnLENOVO:rn20H9004HSC:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T570 dmi.product.name: 20H9004HSC dmi.product.version: ThinkPad T570 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1903388/+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
