[Asus M4A88TD-M/USB3] Transfer to USB drive slows down to a crawl

[AO]

This problem has been affecting this computer release after release for as long as I can remember.
Kernel is 3.13.0-24-generic #46

When transferring 2.7 Go to a fat32 formatted USB drive, transfer starts at 50 Mb/s and finishes at 5.6 Mb/s, with the transfer dialog staying open for minutes with 0 Mb left to transfer.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ao 2970 F.... pulseaudio
 /dev/snd/controlC0: ao 2970 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Apr 16 16:29:42 2014
InstallationDate: Installed on 2014-04-06 (10 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140404)
MachineType: System manufacturer System Product Name
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=b49aac97-cebf-48a0-b5b2-db2b0c148a81 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-24-generic N/A
 linux-backports-modules-3.13.0-24-generic N/A
 linux-firmware 1.127
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/09/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1501
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A88TD-M/USB3
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1501:bd08/09/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A88TD-M/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.15 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'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.15-rc1-trusty/

[Brad Figg (brad-figg)]

This change was made by a bot.

[AO (aofrl10n)]

kernel-bug-exists-upstream

Just tried 13.5-rc1-trusty and the problem persists.

Transferred a 2.1 GB file to the same USB drive, transfer started at 50Mb/s, was down to 20 Mb/s after 1/3, to 11 Mb/s after 1/2 and finished at 6.2 Mb/s and staid there completed for over 5 minutes before the dialog closed.

[penalvch (penalvch)]

Ubuntu-QC-1, what would be the earliest Ubuntu release you personally used that demonstrates this problem?

[AO (aofrl10n)]

I'm afraid I cannot say with any precision, but this is not recent.

[Orionds (shamrock-d)]

I noticed this slowness from Ubuntu 13.04 onwards. 12.04 was a lot better though no speed demon. From 13.04 to 14.04 the transfer starts more or less ok and then slows, almost stops dropping down to about 600kb/s, then speeds up again to about 3 mb/s flucuating up and down from 1.2 mb/s to 3 mb/s. Sometimes, it holds around 4 to 5 mb/s when it "behaves" better.

I have also seen it stop just before 100% transfer, hang around for up to about 30 seconds before completing the write.

[penalvch (penalvch)]

Orionds, thank you for your comment. So your hardware and problem may be tracked, could you please file a new report with Ubuntu by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux

For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue
Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[penalvch (penalvch)]

Ubuntu-QC-1, for regression testing purposes, could you please test 12.04.0 via http://old-releases.ubuntu.com/releases/12.04.0/ and advise to the results?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]