Hello, I have found a bug.
This bug is related to USB2, I have DVD RW external that using USB2 port. I using the kernel 4.15.0-22.
I also attached the error log from dmesg.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-22-generic 4.15.0-22.24
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: KDE
Date: Thu May 24 17:26:01 2018
InstallationDate: Installed on 2018-04-14 (40 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: linux-signed
UpgradeStatus: Upgraded to bionic on 2018-04-27 (26 days ago)
---
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mate 1622 F.... pulseaudio
/dev/snd/pcmC1D0p: mate 1622 F...m pulseaudio
/dev/snd/controlC1: mate 1622 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-04-14 (41 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: LENOVO 20369
Package: linux-signed
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic root=UUID=a14e83f1-8214-4bdd-a01d-d6cebd312997 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
RelatedPackageVersions:
linux-restricted-modules-4.15.0-22-generic N/A
linux-backports-modules-4.15.0-22-generic N/A
linux-firmware 1.173
Tags: bionic
Uname: Linux 4.15.0-22-generic x86_64
UpgradeStatus: Upgraded to bionic on 2018-04-27 (27 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
_MarkForUpload: True
dmi.bios.date: 10/20/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: 9ACN29WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lancer 4A2
dmi.board.vendor: LENOVO
dmi.board.version: NANANANANO DPK
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo G40-70
dmi.modalias: dmi:bvnLENOVO:bvr9ACN29WW:bd10/20/2014:svnLENOVO:pn20369:pvrLenovoG40-70:rvnLENOVO:rnLancer4A2:rvrNANANANANODPK:cvnLENOVO:ct10:cvrLenovoG40-70:
dmi.product.family: IDEAPAD
dmi.product.name: 20369
dmi.product.version: Lenovo G40-70
dmi.sys.vendor: LENOVO
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 1773137
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.