Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.16 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/v3.16-rc1-utopic/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1332880 Title: USB HD WesternDigital copy very slow Status in “linux” package in Ubuntu: Incomplete Bug description: Copy file to USB HD is very slow. Only 1,7 MB/s. dd if=/dev/zero of=/media/usb1/test.tst bs=128k count=100 conv=fdatasync 100+0 registros de entrada 100+0 registros de saída 13107200 bytes (13 MB) copiados, 8,33841 s, 1,6 MB/s HP Proliant ML110 G7, Xeon quad-core, 3.10 GHz, 12 GB RAM, HD 7,500 RPM 250GB. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-36-generic 3.2.0-36.57 ProcVersionSignature: Ubuntu 3.2.0-36.57-generic 3.2.35 Uname: Linux 3.2.0-36-generic x86_64 AlsaDevices: total 0 crw-rw---T 1 root audio 116, 1 Jun 21 17:01 seq crw-rw---T 1 root audio 116, 33 Jun 21 17:01 timer AplayDevices: aplay: device_list:252: no soundcards found... ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 ArecordDevices: arecord: device_list:252: no soundcards found... AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory Date: Sat Jun 21 18:18:41 2014 HibernationDevice: RESUME=UUID=01841c79-999e-4239-b4aa-06be39033d74 InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3) MachineType: HP ProLiant ML110 G7 MarkForUpload: True PciMultimedia: ProcEnviron: LANGUAGE=pt_BR:pt:en TERM=xterm PATH=(custom, no user) LANG=pt_BR.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-36-generic root=/dev/mapper/hostname-root ro RelatedPackageVersions: linux-restricted-modules-3.2.0-36-generic N/A linux-backports-modules-3.2.0-36-generic N/A linux-firmware 1.79.1 RfKill: Error: [Errno 2] No such file or directory SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/01/2012 dmi.bios.vendor: HP dmi.bios.version: J01 dmi.chassis.type: 7 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrJ01:bd02/01/2012:svnHP:pnProLiantML110G7:pvr:cvnHP:ct7:cvr: dmi.product.name: ProLiant ML110 G7 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332880/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp