Hi there,

Sorry for the delayed reply. Yes, I can try that. I won't be able to get to
it until this weekend, though. I really appreciate the help! I'll report
back when I have more information.

Thanks again,
Phil

On Mon, Sep 17, 2018 at 1:40 AM Kai-Heng Feng <kai.heng.f...@canonical.com>
wrote:

> Would it be possible for you to do a kernel bisection?
>
> First, find the last good -rc kernel and the first bad -rc kernel from
> http://kernel.ubuntu.com/~kernel-ppa/mainline/
>
> Then,
> $ sudo apt build-dep linux
> $ git clone git://
> git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> $ cd linux
> $ git bisect start
> $ git bisect good $(the good version you found)
> $ git bisect bad $(the bad version found)
> $ make localmodconfig
> $ make -j`nproc` deb-pkg
> Install the newly built kernel, then reboot with it.
> If the issue still happens,
> $ git bisect bad
> Otherwise,
> $ git bisect good
> Repeat to "make -j`nproc` deb-pkg" until you find the commit that causes
> the regression.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1792045
>
> Title:
>   Ubuntu 18.04 external USB hard drive performance 1/10th of 16.04
>
> Status in linux package in Ubuntu:
>   Confirmed
>
> Bug description:
>   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
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1792045/+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/1792045

Title:
  Ubuntu 18.04 external USB hard drive performance 1/10th of 16.04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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

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