Public bug reported: Hello,
It appears that all kernels before 4.14 had a problem with btrfs ssd mount option. According to https://btrfs.wiki.kernel.org/index.php/Gotchas#ssd_mount_option, it has a negative impact on usability and lifetime of modern SSDs. Since it is enabled by default when SSD is detected, it affects all systems with SSD drives. Please backport this commit to normal and HWE kernels: https://github.com/torvalds/linux/commit/583b723151794e2ff1691f1510b4e43710293875 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic 4.4.0.104.109 ProcVersionSignature: Ubuntu 4.4.0-104.127-generic 4.4.98 Uname: Linux 4.4.0-104-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 дек 17 10:50 seq crw-rw---- 1 root audio 116, 33 дек 17 10:50 timer AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-104-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.14 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Tue Dec 26 18:57:10 2017 InstallationDate: Installed on 2011-04-14 (2448 days ago) InstallationMedia: Ubuntu-Server 10.04.2 LTS "Lucid Lynx" - Release amd64 (20110211.1) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. PciMultimedia: ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-104-generic root=UUID=c7605446-0bf3-11e7-bfa0-f91abd974ce1 ro quiet bootdegraded=true RelatedPackageVersions: linux-restricted-modules-4.4.0-104-generic N/A linux-backports-modules-4.4.0-104-generic N/A linux-firmware 1.157.14 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-07-30 (513 days ago) WifiSyslog: dmi.bios.date: 02/20/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.40 dmi.board.name: 4Core1333-eSATA2. dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd02/20/2008:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvn:rn4Core1333-eSATA2.:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- 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/1740143 Title: backport btrfs ssd mount option fix Status in linux package in Ubuntu: New Bug description: Hello, It appears that all kernels before 4.14 had a problem with btrfs ssd mount option. According to https://btrfs.wiki.kernel.org/index.php/Gotchas#ssd_mount_option, it has a negative impact on usability and lifetime of modern SSDs. Since it is enabled by default when SSD is detected, it affects all systems with SSD drives. Please backport this commit to normal and HWE kernels: https://github.com/torvalds/linux/commit/583b723151794e2ff1691f1510b4e43710293875 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-generic 4.4.0.104.109 ProcVersionSignature: Ubuntu 4.4.0-104.127-generic 4.4.98 Uname: Linux 4.4.0-104-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 дек 17 10:50 seq crw-rw---- 1 root audio 116, 33 дек 17 10:50 timer AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-104-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.14 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Tue Dec 26 18:57:10 2017 InstallationDate: Installed on 2011-04-14 (2448 days ago) InstallationMedia: Ubuntu-Server 10.04.2 LTS "Lucid Lynx" - Release amd64 (20110211.1) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. PciMultimedia: ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-104-generic root=UUID=c7605446-0bf3-11e7-bfa0-f91abd974ce1 ro quiet bootdegraded=true RelatedPackageVersions: linux-restricted-modules-4.4.0-104-generic N/A linux-backports-modules-4.4.0-104-generic N/A linux-firmware 1.157.14 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-07-30 (513 days ago) WifiSyslog: dmi.bios.date: 02/20/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.40 dmi.board.name: 4Core1333-eSATA2. dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd02/20/2008:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvn:rn4Core1333-eSATA2.:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. 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