I think cause of the bad algorithm that to detect USB cable. 2018-07-23 0:27 GMT+07:00 Kai-Heng Feng <kai.heng.f...@canonical.com>:
> So what's the first "bad" -rc kernel that introduces the regression? > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1773137 > > Title: > USB2 keep resetting. kernel: usb 2-1: USB disconnect > > Status in linux package in Ubuntu: > Confirmed > Status in linux-signed package in Ubuntu: > Confirmed > > Bug description: > 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 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/ > 1773137/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773137 Title: USB2 keep resetting. kernel: usb 2-1: USB disconnect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
