Some kernels are a lot more reliable and some USB3 devices are just unreliable.
You need to confirm that that device works fine under windows. I have recently had the strange situation of a HDD caddy which keeps disconnecting under windows but no issues under linux. (different computers) So OS is not the only factor. Sometimes it's the device or the USB chipset. On Fri, Oct 3, 2014 at 10:47 AM, a_user <[email protected]> wrote: > i have the same issue, though it is not really randomly disconnecting, > but disconnecting 100% of the time every few minutes an ntfs external > hdd. > > Kernel is Linux htpc 3.16.0-20-generic #27-Ubuntu SMP Wed Oct 1 17:35:12 > UTC 2014 x86_64 x86_64 x86_64 GNU/Linux on Ubuntu Gnome Unicorn. > > part of my syslog: http://pastebin.com/qXHX6pHN > i disconnected and reconnected several times while i tried to copy seeral > large files over. > > finally i gave up and connected it via usb2 which is working fine. > > i actually always had issue with usb3 on linux. on some > kernel/distribution versions it worked on most it didn't. it either just > caused a lot of errors trying to access the drive or disconnected or > what ever. > > but there were version were it worked without any problems. usb3 does > not seem to be well support. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1050352 > > Title: > [Gigabyte P55A-UD4] External USB 3.0 hard drive randomly disconnects > and connects > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1050352/+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/1050352 Title: [Gigabyte P55A-UD4] External USB 3.0 hard drive randomly disconnects and connects Status in “linux” package in Ubuntu: Expired Bug description: Ubuntu 12.10 AMD64, kernel 3.5.0-14.16. External hard drive Hitachi Touro Desk 3.0 connected to USB 3.0 port. Gets disconnected randomly and then connected again. Only happens with USB 3.0 connection (xhci). WORKAROUND: When plugged to USB 2.0 (ehci) port it works ok. Attached is related kernel log portion: there is nothing special there except for these lines: 11-2: Parent hub missing LPM exit latency info. Power management will be impacted. usb 11-2: USB disconnect, device number 2 --- AcpiTables: Error: command ['pkexec', '/usr/share/apport/dump_acpi_tables.py'] failed with exit code 127: Error executing /usr/share/apport/dump_acpi_tables.py: Permission denied ApportVersion: 2.5.1-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dmitry 3011 F.... pulseaudio /dev/snd/controlC1: dmitry 3011 F.... pulseaudio /dev/snd/controlC0: dmitry 3011 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. DistroRelease: Ubuntu 12.10 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=e3fa02f8-4f15-4f00-9d79-e982d4837b5c IwConfig: vboxnet0 no wireless extensions. eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. P55A-UD4 NonfreeKernelModules: nvidia Package: linux (not installed) ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-14-generic root=UUID=33c3405d-4b3c-4b5c-a1c3-fd2c7bad1c79 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.5.0-14.16-generic 3.5.3 RelatedPackageVersions: linux-restricted-modules-3.5.0-14-generic N/A linux-backports-modules-3.5.0-14-generic N/A linux-firmware 1.91 RfKill: Tags: quantal running-unity Uname: Linux 3.5.0-14-generic x86_64 UpgradeStatus: Upgraded to quantal on 2012-09-07 (6 days ago) UserGroups: adm cdrom dialout fuse kvm libvirtd lpadmin plugdev pulse pulse-access sambashare sudo vboxusers wireshark dmi.bios.date: 08/10/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F14 dmi.board.name: P55A-UD4 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF14:bd08/10/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55A-UD4:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55A-UD4:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: P55A-UD4 dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1050352/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
