The problem still exists here with various USB3 disks. System information: MacBook Air 6,2 with two USB3 ports Kernel version: 3.12.13-031213-generic
reading large amounts of data seems to be no problem, but when writing data, the error occours: l 9 12:39:47 ishtar kernel: [ 1492.741609] usb 2-2: reset SuperSpeed USB device number 7 using xhci_hcd ==> /var/log/syslog <== Jul 9 12:39:47 ishtar kernel: [ 1492.757475] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8801c601ec80 Jul 9 12:39:47 ishtar kernel: [ 1492.757482] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8801c601ecc0 ==> /var/log/kern.log <== Jul 9 12:39:47 ishtar kernel: [ 1492.757475] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8801c601ec80 Jul 9 12:39:47 ishtar kernel: [ 1492.757482] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8801c601ecc0 I have cross-checked the disks on different systems with USB2 ports: its not a faulty disk! Help and solutions is highly appreciated -- 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/1284399 Title: xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c0ef0a00 Status in “linux” package in Ubuntu: Expired Bug description: [ 9486.068349] usb 3-2: new high-speed USB device number 8 using xhci_hcd [ 9486.086082] usb 3-2: New USB device found, idVendor=04e8, idProduct=6860 [ 9486.086094] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 9486.086100] usb 3-2: Product: SAMSUNG_Android [ 9486.086105] usb 3-2: Manufacturer: SAMSUNG [ 9486.086110] usb 3-2: SerialNumber: 0ae8fda7 [ 9486.087537] cdc_acm 3-2:1.1: This device cannot do calls on its own. It is not a modem. [ 9486.087675] cdc_acm 3-2:1.1: ttyACM0: USB ACM device [ 9546.357396] usb 3-2: reset high-speed USB device number 8 using xhci_hcd [ 9546.373938] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c0ef0a00 [ 9546.373950] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c0ef09c0 [ 9546.373956] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880117d3e140 [ 9546.373962] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800c0ef0a40 [ 9546.373967] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880117d3e100 [ 9546.373973] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88008c297180 [ 9546.374529] cdc_acm 3-2:1.1: This device cannot do calls on its own. It is not a modem. [ 9546.374641] cdc_acm 3-2:1.1: ttyACM0: USB ACM device ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-11-generic 3.13.0-11.31 ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3 Uname: Linux 3.13.0-11-generic x86_64 ApportVersion: 2.13.2-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: caravena 2152 F.... pulseaudio CRDA: country CL: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (N/A, 20) (5250 - 5330 @ 40), (N/A, 20), DFS (5735 - 5835 @ 40), (N/A, 20) CurrentDesktop: GNOME Date: Mon Feb 24 22:47:58 2014 HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87 InstallationDate: Installed on 2014-01-23 (32 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140122) MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-11-generic root=UUID=0c67119c-ddae-476a-b510-142ec598f691 ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-11-generic N/A linux-backports-modules-3.13.0-11-generic N/A linux-firmware 1.125 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/15/2013 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P14AAJ dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: SAMSUNG_NP1234567890 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 530U3C/530U4C dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1284399/+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
