Ubuntu
linux package

Slow ethernet download speeds using SS USB (3.x) to Ethernet hardware bridge

Bug #1747701 reported by Jeb E. on 2018-02-06

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Linux	Unknown	Unknown	linux-kernel-bugs #198695
	linux (Ubuntu)	Incomplete	Medium	Unassigned

Bug Description

Download speeds are incredibly slow over Ethernet using an SS USB (3.x) to Gigabit Ethernet adapter.
The problem is not with the ISP or router configuration, as I have tested on several devices with both WiFi and Gigabit Ethernet, prioritizing traffic to the device testing from.

Direct internet speeds to my router are a solid ~90 Down/~90 Up.
WiFi speeds tend to be around 80 Down/80 Up on my Linux system I am having the issue with, and Gigabit Ethernet speeds vary anywhere from 2-10 Down/20-65 Up.

I've never once had a time where WiFi actually performed *better* than a solid network connection, either.

See the attached HardInfo Generated System Report and Ubuntu-Bug debugging info.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-lowlatency 4.13.0.32.34
ProcVersionSignature: Ubuntu 4.13.0-32.35-lowlatency 4.13.13
Uname: Linux 4.13.0-32-lowlatency x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jeb 12678 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Feb 6 10:31:29 2018
HibernationDevice: RESUME=UUID=dc0e59b0-c3f8-4113-9ea4-87b3b2e0c112
MachineType: Dell Inc. Inspiron 13-5368
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-lowlatency root=UUID=b0b38a57-52b5-4e23-be9e-85197724f378 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.13.0-32-lowlatency N/A
linux-backports-modules-4.13.0-32-lowlatency N/A
linux-firmware 1.169.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/14/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.14.0
dmi.board.name: 01DC01
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.14.0:bd09/14/2017:svnDellInc.:pnInspiron13-5368:pvr:rvnDellInc.:rn01DC01:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 13-5368
dmi.sys.vendor: Dell Inc.

Tags:

Revision history for this message

Jeb E. (jebeld17) wrote on 2018-02-06:

Hardinfo Generated System Report Edit (107.2 KiB, text/html)
AlsaInfo.txt Edit (40.6 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (3.0 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (77.9 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (3.7 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (254 bytes, text/plain; charset="utf-8")
JournalErrors.txt Edit (110.0 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (9.4 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (442 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (4.8 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (3.2 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (9.8 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (28.8 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (113 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (225.2 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (191.0 KiB, text/plain; charset="utf-8")

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2018-02-08:

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 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] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15