This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1255522
Title:
Slow copy transfer rates by bad USB 2.0 detection in external usb
storage devices
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
By recommendation of Christopher M. Penalver (penalvch), I fill this
bug in reference to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/177235
Extracted issue from comments of #177235:
"""Confirmed issue with slow transfer rates (<1.5 MB/s) for 3 different
external USB 2.0 hardisk (toshiba 1 TB, SAMSUNG 512 GB, Hitachi 1 TB) with
3.12.0-4-generic from trusty. It is mainly a bad detection as USB 1.0 instead
of USB 2.0 in dmesg (check_highspeed is indeed bogus). I try to test with
kernel mainline v3.13-rc1-trusty but I cannot because I am affected by the bug
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1254424 in fglrx.
Copy 20 GB takes days, instead of hours for this issue. Thats
unacceptable for backups in a company or the medium user with
multimedia files. Please Ubuntu or Linux Team, contact with upstream,
assign devs and raise with more priority with this bug. Perfomance is
a must in GNU/Linux."""
This report was filled using "ubuntu-bug linux" command. The issue is
mainly to copy or move files to a USB external storage device from the
laptop or desktop. There are plenty similar reports about this issue,
but I filled this for recommentation and because the devs can obtain
some debug information about the devices.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.12.0-4-generic 3.12.0-4.10
ProcVersionSignature: Ubuntu 3.12.0-4.10-generic 3.12.1
Uname: Linux 3.12.0-4-generic i686
NonfreeKernelModules: fglrx
ApportVersion: 2.12.7-0ubuntu1
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: shakaran 3667 F.... pulseaudio
/dev/snd/controlC0: shakaran 3667 F.... pulseaudio
/dev/snd/pcmC0D0p: shakaran 3667 F...m pulseaudio
CurrentDesktop: Unity
Date: Wed Nov 27 13:19:24 2013
HibernationDevice: RESUME=UUID=ca085202-e6f9-4736-b311-6d9a361ec3d6
InstallationDate: Installed on 2013-02-03 (297 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Acer Aspire 5943G
ProcFB: 0 simple
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-4-generic
root=UUID=7f18d659-ec06-4afe-b3be-13b15de376b2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.12.0-4-generic N/A
linux-backports-modules-3.12.0-4-generic N/A
linux-firmware 1.117
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2013-10-31 (27 days ago)
dmi.bios.date: 10/21/2010
dmi.bios.vendor: Acer
dmi.bios.version: V1.15
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Aspire 5943G
dmi.board.vendor: Acer
dmi.board.version: V1.15
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.15
dmi.modalias:
dmi:bvnAcer:bvrV1.15:bd10/21/2010:svnAcer:pnAspire5943G:pvrV1.15:rvnAcer:rnAspire5943G:rvrV1.15:cvnAcer:ct10:cvrV1.15:
dmi.product.name: Aspire 5943G
dmi.product.version: V1.15
dmi.sys.vendor: Acer
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