This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1805816 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- 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/1805816 Title: APST quirk needed for PM951 Samsung 1TB NVMe Drive Status in linux package in Ubuntu: Incomplete Bug description: This is a fresh posted connected to a very similar now-solved bug ("APST quirk needed for Samsung 512GB NVMe drive"): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184 My NVMe is the less-common 1TB version. It exhibits similar (possibly identical) behaviour but has not yet been quirked. I've followed up as Comment #101 but maybe I need to open this as a new issue? https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184/comments/101 Specifically - using Kernel 4.19.0 on Mint 19.0 the default APST settings caused read-only errors within minutes-1 hour, this is fatal. Disabling APST solves the problem, I have this disabled in GRUB now. Reducing the APST settings but not disabling them does not stop the problem. An example of the read-only result (copied from #101) that occurs if APST is left in its default state: Oct 31 11:33:04 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null) Oct 31 11:33:04 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro Oct 31 11:33:05 ian-XPS-15-9550 kernel: EXT4-fs (nvme0n1p1): mounted filesystem with ordered data mode. Opts: (null) Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null) Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro Oct 31 15:09:44 ian-XPS-15-9550 kernel: EXT4-fs (nvme0n1p1): mounted filesystem with ordered data mode. Opts: (null) I had tried `nvme_core.default_ps_max_latency_us=250` but the read- only bug persists, it just takes longer to occur. Disabling APST with `nvme_core.default_ps_max_latency_us=0` has solved the issue. I've been using my laptop successfully (no read-only errors) for over a week having disabled APST including many suspend/awaken cycles. Prior to this every boot would crash and burn with read-only errors within an hour or so. This is the drive and kernel (copied from #101): $ sudo nvme list Node SN Model Namespace Usage Format FW Rev ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1 S2FZNYAG801690 PM951 NVMe SAMSUNG 1024GB 1 314.10 GB / 1.02 TB 512 B + 0 B BXV76D0Q $ uname -a Linux ian-XPS-15-9550 4.19.0-041900-generic #201810221809 SMP Mon Oct 22 22:11:45 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -rd Description: Linux Mint 19 Tara Release: 19 I am of course happy to upload more info - let me know what's needed? Could this be added as a quirk to the kernel please? --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: X-Cinnamon DistroRelease: Linux Mint 19 InstallationDate: Installed on 2018-10-27 (32 days ago) InstallationMedia: Linux Mint 19 "Tara" - Release amd64 20180717 Package: linux (not installed) Tags: tara Uname: Linux 4.19.0-041900-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: X-Cinnamon DistroRelease: Linux Mint 19 InstallationDate: Installed on 2018-10-27 (32 days ago) InstallationMedia: Linux Mint 19 "Tara" - Release amd64 20180717 Package: linux (not installed) Tags: tara Uname: Linux 4.19.0-041900-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805816/+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