This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1815808
Title:
Thunderbolt Ethernet high-traffic exception
Status in linux package in Ubuntu:
Confirmed
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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