After copying just 230MB from this external drive to my laptop's local drive, I get the following messages in my log file and the drive disappears from view -
Dec 16 11:58:54 coralreef kernel: [ 3605.052088] usb 1-6: reset high-speed USB device number 27 using ehci_hcd Dec 16 11:59:09 coralreef kernel: [ 3620.164086] usb 1-6: device descriptor read/64, error -110 Dec 16 11:59:24 coralreef kernel: [ 3635.380081] usb 1-6: device descriptor read/64, error -110 Dec 16 11:59:24 coralreef kernel: [ 3635.596095] usb 1-6: reset high-speed USB device number 27 using ehci_hcd Dec 16 11:59:40 coralreef kernel: [ 3650.708089] usb 1-6: device descriptor read/64, error -110 Dec 16 11:59:55 coralreef kernel: [ 3665.924115] usb 1-6: device descriptor read/64, error -110 Dec 16 11:59:55 coralreef kernel: [ 3666.140082] usb 1-6: reset high-speed USB device number 27 using ehci_hcd Dec 16 12:00:00 coralreef kernel: [ 3671.552053] usb 1-6: device not accepting address 27, error -71 Dec 16 12:00:01 coralreef kernel: [ 3671.664135] usb 1-6: reset high-speed USB device number 27 using ehci_hcd Dec 16 12:00:06 coralreef kernel: [ 3677.076069] usb 1-6: device not accepting address 27, error -71 Dec 16 12:00:06 coralreef kernel: [ 3677.076131] usb 1-6: USB disconnect, device number 27 Dec 16 12:00:06 coralreef kernel: [ 3677.076262] sd 7:0:0:0: Device offlined - not ready after error recovery Dec 16 12:00:06 coralreef kernel: [ 3677.080075] sd 7:0:0:0: [sdb] Unhandled error code Dec 16 12:00:06 coralreef kernel: [ 3677.080080] sd 7:0:0:0: [sdb] Dec 16 12:00:06 coralreef kernel: [ 3677.080084] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Dec 16 12:00:06 coralreef kernel: [ 3677.080087] sd 7:0:0:0: [sdb] CDB: Dec 16 12:00:06 coralreef kernel: [ 3677.080089] Read(10): 28 00 57 7b 36 38 00 00 f0 00 Dec 16 12:00:06 coralreef kernel: [ 3677.080104] end_request: I/O error, dev sdb, sector 1467692600 Dec 16 12:00:06 coralreef kernel: [ 3677.080109] quiet_error: 22 callbacks suppressed Dec 16 12:00:06 coralreef kernel: [ 3677.080116] Buffer I/O error on device sdb1, logical block 183461319 Dec 16 12:00:06 coralreef kernel: [ 3677.080131] Buffer I/O error on device sdb1, logical block 183461320 Dec 16 12:00:06 coralreef kernel: [ 3677.080135] Buffer I/O error on device sdb1, logical block 183461321 Dec 16 12:00:06 coralreef kernel: [ 3677.080138] Buffer I/O error on device sdb1, logical block 183461322 Dec 16 12:00:06 coralreef kernel: [ 3677.080141] Buffer I/O error on device sdb1, logical block 183461323 Dec 16 12:00:06 coralreef kernel: [ 3677.080144] Buffer I/O error on device sdb1, logical block 183461324 Dec 16 12:00:06 coralreef kernel: [ 3677.080147] Buffer I/O error on device sdb1, logical block 183461325 Dec 16 12:00:06 coralreef kernel: [ 3677.080150] Buffer I/O error on device sdb1, logical block 183461326 Dec 16 12:00:06 coralreef kernel: [ 3677.080154] Buffer I/O error on device sdb1, logical block 183461327 Dec 16 12:00:06 coralreef kernel: [ 3677.080160] Buffer I/O error on device sdb1, logical block 183461328 Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread error reading '/.Other/OtherAngelDaph.tar.gz.pgp' at offset 230424576: 131072 <> -1: Input/output error Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread error reading '/.Other/OtherAngelDaph.tar.gz.pgp' at offset 230555648: 131072 <> -1: Input/output error Dec 16 12:00:06 coralreef kernel: [ 3677.080222] sd 7:0:0:0: [sdb] Unhandled error code Dec 16 12:00:06 coralreef kernel: [ 3677.080226] sd 7:0:0:0: [sdb] Dec 16 12:00:06 coralreef kernel: [ 3677.080228] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK Dec 16 12:00:06 coralreef kernel: [ 3677.080231] sd 7:0:0:0: [sdb] CDB: Dec 16 12:00:06 coralreef kernel: [ 3677.080233] Read(10): 28 00 57 7b 37 28 00 00 10 00 Dec 16 12:00:06 coralreef kernel: [ 3677.080245] end_request: I/O error, dev sdb, sector 1467692840 Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread_i: ntfs_pread failed: Input/output error Dec 16 12:00:06 coralreef ntfs-3g[4663]: ntfs_attr_pread error reading '/.Other/OtherAngelDaph.tar.gz.pgp' at offset 230424576: 4096 <> -1: Input/output error Dec 16 12:00:06 coralreef udisksd[1871]: Cleaning up mount point /media/clownfish/Earth (device 8:17 no longer exist) Dec 16 12:00:06 coralreef kernel: [ 3677.244046] usb 1-6: new high-speed USB device number 28 using ehci_hcd Dec 16 12:00:06 coralreef ntfs-3g[4663]: Unmounting /dev/sdb1 (Earth) Dec 16 12:00:21 coralreef kernel: [ 3692.356127] usb 1-6: device descriptor read/64, error -110 Dec 16 12:00:36 coralreef kernel: [ 3707.572078] usb 1-6: device descriptor read/64, error -110 Dec 16 12:00:37 coralreef kernel: [ 3707.788055] usb 1-6: new high-speed USB device number 29 using ehci_hcd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1012291 Title: USB disconnect To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1012291/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
