Public bug reported:
>From both a live and an installed environment, I cannot get my external
8TB sata hard drive (attached via USB 3) to write faster than about 10
megabytes per second under Ubuntu 18.04. I have another that writes at
the expected full speed or close enough (100+ MBps).
I have tried:
* Changing the enclosure from the stock to a new one
* Using usb-storage "quirks" options in modprobe conf files to work around any
UAS incompatibilities with the bridge (many reports of the drive working at
full performance when disabling UAS, no such luck for me)
* Checking the disk for errors
* Updating the kernel to the most recent mainline (4.18.6 at the time)
* Checking UEFI settings (I'm already on the most recent revision of the
firmware)
* Applying all available updates
* Changing USB ports
* Checking dmesg for any obvious errors (dead end, I googled everything)
Again, a different external 3TB USB 3 drive does not have any write speed
issues at all, so it's not the computer (Intel NUC7PJYH).
However, the very same drive in both of the enclosures I have used works
*perfectly* in Ubuntu 16.04 on kernel 4.15.0-34 in both a live session
and installed. I am not sure what the difference is between the two LTS
versions that is causing this, but unfortunately I think I've reached
the end of my know-how on this.
Thank you for your time, and please let me know what other information I
can provide.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-33-generic 4.15.0-33.36
ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer']
failed with exit code 1:
CurrentDesktop: XFCE
Date: Tue Sep 11 18:33:46 2018
InstallationDate: Installed on 2018-09-06 (4 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Lsusb:
Bus 002 Device 002: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA 6Gb/s
bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0aaa Intel Corp.
Bus 001 Device 002: ID 1997:2433
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Intel Corporation NUC7PJYH
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic
root=UUID=b40fd1a1-0de5-40bb-b598-7f4cd53daee1 ro quiet splash vt.handoff=1
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.15.0-33-generic N/A
linux-backports-modules-4.15.0-33-generic N/A
linux-firmware 1.173.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 08/21/2018
dmi.bios.vendor: Intel Corp.
dmi.bios.version: JYGLKCPX.86A.0044.2018.0821.1915
dmi.board.name: NUC7JYB
dmi.board.vendor: Intel Corporation
dmi.board.version: J67969-401
dmi.chassis.type: 35
dmi.chassis.vendor: Intel Corporation
dmi.chassis.version: 2.0
dmi.modalias:
dmi:bvnIntelCorp.:bvrJYGLKCPX.86A.0044.2018.0821.1915:bd08/21/2018:svnIntelCorporation:pnNUC7PJYH:pvrJ67992-401:rvnIntelCorporation:rnNUC7JYB:rvrJ67969-401:cvnIntelCorporation:ct35:cvr2.0:
dmi.product.family: Intel NUC
dmi.product.name: NUC7PJYH
dmi.product.version: J67992-401
dmi.sys.vendor: Intel Corporation
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug bionic
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/bugs/1792045/+attachment/5187735/+files/lspci-vnvn.log
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https://bugs.launchpad.net/bugs/1792045
Title:
Ubuntu 18.04 external USB hard drive performance 1/10th of 16.04
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