The dmesg on 4.20 rc6 still contains a lot of call traces. I don't know if they are the same ones or of the same origin though. When comparing files i initially thought the 4.20rc6 has less call traces, but actually at the end of the diff there are more. So i would say both 4.18 and 4.20rc6 roughly have the same amount of call traces.
** Attachment added: "dmesg_4_20.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805433/+attachment/5220931/+files/dmesg_4_20.txt ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags added: kernel-bug-exists-upstream -- 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/1805433 Title: Call trace in dmesg (need to specify later what this is) Status in linux package in Ubuntu: Confirmed Bug description: Hello, I get a few call traces in my dmesg log which seems to indicate some problem. I'm trying to get my hardware better compatible with Ubuntu 18.10 therefor i report this bug. Actually i have no idea what this is about so i'll be happy to provide more information on request. There are actually a few call traces so i will upload the entire output from dmesg together with information on my system. Possibly the issues should be separated into several bug reports. --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: philippe 4375 F.... pulseaudio /dev/snd/controlC0: philippe 4375 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.10 InstallationDate: Installed on 2018-05-14 (198 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. Package: linux (not installed) ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-11-generic root=UUID=5ef6da7b-eb86-45bd-ad30-df7141164c79 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12 RelatedPackageVersions: linux-restricted-modules-4.18.0-11-generic N/A linux-backports-modules-4.18.0-11-generic N/A linux-firmware 1.175.1 Tags: cosmic Uname: Linux 4.18.0-11-generic x86_64 UpgradeStatus: Upgraded to cosmic on 2018-11-16 (11 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 07/23/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P4.70 dmi.board.name: AB350 Gaming-ITX/ac dmi.board.vendor: ASRock 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.:bvrP4.70:bd07/23/2018:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnAB350Gaming-ITX/ac:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805433/+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