I ran the 5.0.0 kernel, sending data bidirectionally with iperf3. It failed after about 10 minutes, I lost the Ethernet and the keyboard/mouse connected through the TB-10 dock. Unfortunately I forgot to do an lsusb -v in the crashed state.
After rebooting, I ran iperf3 again, bidirectionally for an hour. No hiccups, no errors. Talking to two other machines (one transmit/one receive) the XP 15 maintained 933 Mb/s bidirectional with no dropped packets for the entire time. Previously total bidirectional bandwidth was limited to about 1.3 Gb/s, with a bandwidth varying both transmit and receive. How else can I help? On Wed, Feb 20, 2019 at 5:45 AM Kai-Heng Feng <kai.heng.f...@canonical.com> wrote: > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v5.0-rc7 kernel[0]. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.0-rc7/ > > -- > 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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1815808 Title: Thunderbolt Ethernet high-traffic exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1815808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
