It's helpful to know that after I lost the USB devices in the kernel exception, I moved the KVM to a builtin USB port.
On Sun, Feb 24, 2019 at 2:12 AM Gene Olson <g...@thinsoft.com> wrote: > I got a good example of a v5.0-rc7 kernel exception attached. I can't > reproduce them easily, although I could when I first filed my bug report. > Now it takes a few hours of full bore Ethernet traffic. This crash I once > again lost many/most of my usb devices. > > On Wed, Feb 20, 2019 at 10:28 PM Gene Olson <g...@thinsoft.com> wrote: > >> If you need anything else, please let me know ahead of time. >> >> Thanks, >> Gene >> >> On Wed, Feb 20, 2019 at 4:50 PM Kai-Heng Feng < >> kai.heng.f...@canonical.com> wrote: >> >>> Ok, please attach dmesg when this issue happens, preferably under >>> v5.0-rc7. >>> >>> The dmesg in comment #1 didn't record useful information. >>> >>> -- >>> You received this bug notification because you are subscribed to the bug >>> report. >>> https://bugs.launchpad.net/bugs/1815808 >>> >>> Title: >>> Thunderbolt Ethernet high-traffic exception >>> >>> Status in linux package in Ubuntu: >>> Incomplete >>> >>> Bug description: >>> Running iperf3 on Dell XP-15 with TB-10 Thunderbolt dock causes a >>> kernel exception and ethernet failure after about 30 seconds. >>> >>> Easy to reproduce. Connect to another machine via Gig-E and run >>> iperf3 in either direction until the problem occurs. Should run 900+ >>> Mb in either direction. On one occasion I also lost the USB ports. >>> However the display continues to work. >>> >>> <on my-machine> >>> # uname -a >>> Linux hauser 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC >>> 2019 x86_64 x86_64 x86_64 GNU/Linux >>> # apt install iperf3 >>> # iperf3 -s >>> >>> <other machine> >>> # apt install iperf3 >>> # iperf3 -c my-machine -t 1000 # send to my machine >>> # iperf3 -c my-machine -t 1000 -R # receive data from my machine >>> >>> When the bitrate drops to zero, look in syslog for the exception. >>> >>> Note: Until recently the TB-10 Ethernet would not receive full speed. >>> (prior to -43 kernel) Did not see this problem before the Ethernet >>> performance increased. >>> >>> ProblemType: Bug >>> DistroRelease: Ubuntu 18.04 >>> Package: linux-image-4.15.0-45-generic 4.15.0-45.48 >>> ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 >>> Uname: Linux 4.15.0-45-generic x86_64 >>> NonfreeKernelModules: nvidia_modeset nvidia >>> ApportVersion: 2.20.9-0ubuntu7.5 >>> Architecture: amd64 >>> AudioDevicesInUse: >>> USER PID ACCESS COMMAND >>> /dev/snd/controlC0: gene 1994 F.... pulseaudio >>> CurrentDesktop: ubuntu:GNOME >>> Date: Wed Feb 13 13:54:28 2019 >>> HibernationDevice: RESUME=UUID=d15ecb23-8691-42a1-9909-a56f934b536c >>> InstallationDate: Installed on 2018-11-19 (86 days ago) >>> InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 >>> (20180725) >>> MachineType: Dell Inc. XPS 15 9570 >>> ProcFB: 0 inteldrmfb >>> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic >>> root=UUID=a73e2d3e-5ce3-4130-917d-d116c1316153 ro net.ifnames=0 >>> mem_sleep_default=deep >>> RelatedPackageVersions: >>> linux-restricted-modules-4.15.0-45-generic N/A >>> linux-backports-modules-4.15.0-45-generic N/A >>> linux-firmware 1.173.3 >>> SourcePackage: linux >>> UpgradeStatus: No upgrade log present (probably fresh install) >>> dmi.bios.date: 12/25/2018 >>> dmi.bios.vendor: Dell Inc. >>> dmi.bios.version: 1.7.0 >>> dmi.board.name: 02MJVY >>> dmi.board.vendor: Dell Inc. >>> dmi.board.version: A00 >>> dmi.chassis.type: 10 >>> dmi.chassis.vendor: Dell Inc. >>> dmi.modalias: >>> dmi:bvnDellInc.:bvr1.7.0:bd12/25/2018:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn02MJVY:rvrA00:cvnDellInc.:ct10:cvr: >>> dmi.product.family: XPS >>> dmi.product.name: XPS 15 9570 >>> dmi.sys.vendor: Dell Inc. >>> >>> To manage notifications about this bug go to: >>> >>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1815808/+subscriptions >>> >> -- 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/1815808 Title: Thunderbolt Ethernet high-traffic exception Status in linux package in Ubuntu: Incomplete Bug description: Running iperf3 on Dell XP-15 with TB-10 Thunderbolt dock causes a kernel exception and ethernet failure after about 30 seconds. Easy to reproduce. Connect to another machine via Gig-E and run iperf3 in either direction until the problem occurs. Should run 900+ Mb in either direction. On one occasion I also lost the USB ports. However the display continues to work. <on my-machine> # uname -a Linux hauser 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux # apt install iperf3 # iperf3 -s <other machine> # apt install iperf3 # iperf3 -c my-machine -t 1000 # send to my machine # iperf3 -c my-machine -t 1000 -R # receive data from my machine When the bitrate drops to zero, look in syslog for the exception. Note: Until recently the TB-10 Ethernet would not receive full speed. (prior to -43 kernel) Did not see this problem before the Ethernet performance increased. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-45-generic 4.15.0-45.48 ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18 Uname: Linux 4.15.0-45-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gene 1994 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Wed Feb 13 13:54:28 2019 HibernationDevice: RESUME=UUID=d15ecb23-8691-42a1-9909-a56f934b536c InstallationDate: Installed on 2018-11-19 (86 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: Dell Inc. XPS 15 9570 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=a73e2d3e-5ce3-4130-917d-d116c1316153 ro net.ifnames=0 mem_sleep_default=deep RelatedPackageVersions: linux-restricted-modules-4.15.0-45-generic N/A linux-backports-modules-4.15.0-45-generic N/A linux-firmware 1.173.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/25/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.7.0 dmi.board.name: 02MJVY dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.7.0:bd12/25/2018:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn02MJVY:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9570 dmi.sys.vendor: Dell Inc. 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