The problem disappeared a few month ago, after a system update, perhaps a kernel update. Sorry, I can't give any more specific information.
-- 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/1825987 Title: kernel 5.0 won't auto register bcache caching device Status in linux package in Ubuntu: Confirmed Bug description: Hi, Since I upgrade my desktop to Ubuntu 19.04, the boot process is enable to find the root file system, and drop me to a single user command line. It seems that kernel 5.0 does not automatically register the bcache caching device (/dev/sdb, SSD). However, it does register the backing device (/dev/sda6, rotating HDD). To recover, I have to type the following commands : # echo /dev/sdb > /sys/fs/bcache/register # lvm vgscan # lvm vgchange -ay # exit and then, the boot proceed to its normal end (graphical display manager). The problem does not occur if the system is booted with kernel 4.18.0. ========================= # lsb_release -rd Description: Ubuntu 19.04 Release: 19.04 # apt-cache policy linux-image-5.0.0-13-generic linux-image-5.0.0-13-generic: Installed: 5.0.0-13.14 Candidate: 5.0.0-13.14 Version table: *** 5.0.0-13.14 500 500 http://fr.archive.ubuntu.com/ubuntu disco/main amd64 Packages 100 /var/lib/dpkg/status # apt-cache policy linux-image-4.18.0-17 linux-image-4.18.0-17-generic: Installed: 4.18.0-17.18 Candidate: 4.18.0-17.18 Version table: *** 4.18.0-17.18 100 100 /var/lib/dpkg/status --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sylvie 4552 F.... pulseaudio DistroRelease: Ubuntu 19.04 HibernationDevice: RESUME=/dev/vg_acer/lv_swap MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7529 Package: linux-image-5.0.0-13-generic 5.0.0-13.14 PackageArchitecture: amd64 ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-13-generic root=/dev/mapper/vg_acer-lv_root ro ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6 RelatedPackageVersions: linux-restricted-modules-5.0.0-13-generic N/A linux-backports-modules-5.0.0-13-generic N/A linux-firmware 1.178 RfKill: Tags: disco Uname: Linux 5.0.0-13-generic x86_64 UpgradeStatus: Upgraded to disco on 2019-04-23 (1 days ago) UserGroups: adm admin audio cdrom dialout docker famille fax fuse lpadmin netdev nopasswdlogin plugdev sambashare video wireshark _MarkForUpload: True dmi.bios.date: 04/19/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V4.6 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: G31TM-P35 (MS-7529) dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV4.6:bd04/19/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7529:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnG31TM-P35(MS-7529):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: MS-7529 dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: 1.0 dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1825987/+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
