Problems with usb drive recognition

i have an external usb hdd drive. this was recognized perfect a couple of weeks ago. i cant remember when it started but it started with the behaviour that i had to wait for about 2-5 minutes until the popup appeared that a device is plugged in. now it needs not only longer but sometimes i have to reboot to get that. now i rebooted, but still i can not access /media/My Book
anyone an idea whats going on? smartmontools say the device is perfectly fine and it also works instantly on my workstation.

some dmesg output:

[   25.630826@3] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   26.246325@3] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   26.272903@0] scsi 0:0:0:0: Direct-Access     WD       My Book 25EE     4004 PQ: 0 ANSI: 6
[   26.562397@0] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   26.598590@0] scsi 0:0:0:1: Enclosure         WD       SES Device       4004 PQ: 0 ANSI: 6
[   26.678329@0] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   26.752110@0] sd 0:0:0:0: Attached scsi generic sg0 type 0
[   26.753154@0] sd 0:0:0:0: [sda] Very big device. Trying to use READ CAPACITY(16).
[   26.753285@0] scsi 0:0:0:1: Attached scsi generic sg1 type 13
[   26.760929@0] sd 0:0:0:0: [sda] 15628052480 512-byte logical blocks: (8.00 TB/7.28 TiB)
[   26.760935@0] sd 0:0:0:0: [sda] 4096-byte physical blocks
[   26.761279@0] sd 0:0:0:0: [sda] Write Protect is off
[   26.761283@0] sd 0:0:0:0: [sda] Mode Sense: 47 00 10 08
[   26.761578@0] sd 0:0:0:0: [sda] No Caching mode page found
[   26.761582@0] sd 0:0:0:0: [sda] Assuming drive cache: write through
[   26.765556@0] sd 0:0:0:0: [sda] Very big device. Trying to use READ CAPACITY(16).
[   26.942379@1] usb 2-1.1: Device not responding to setup address.
[   27.150318@1] usb 2-1.1: Device not responding to setup address.
[   27.358255@1] usb 2-1.1: device not accepting address 5, error -71
[   27.686386@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   27.885168@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   28.085124@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   28.285462@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   28.485153@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   28.676784@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   28.695064@1] sd 0:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[   28.695075@1] sd 0:0:0:0: [sda] tag#0 CDB: Read(16) 88 00 00 00 00 00 00 00 00 00 00 00 00 08 00 00
[   28.695078@1] blk_update_request: I/O error, dev sda, sector 0
[   28.695083@1] Buffer I/O error on dev sda, logical block 0, async page read
[   57.046252@0] cectx ff80023c.aocec: bus confilct too long
[   58.986295@3] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   59.106316@1] usb 2-1.1: reset SuperSpeed USB device number 5 using xhci-hcd
[   59.221751@0]  sda: unable to read partition table
[   59.223613@0] sd 0:0:0:0: [sda] Very big device. Trying to use READ CAPACITY(16).
[   59.224319@0] sd 0:0:0:0: [sda] Attached SCSI disk
[   62.478233@4] fb: mem_free_work, free memory: addr:800000
[   72.570241@0] cectx ff80023c.aocec: bus confilct too long
[  102.418242@0] cectx ff80023c.aocec: bus confilct too long
[  116.402268@0] cectx ff80023c.aocec: bus confilct too long
[  131.462306@0] cectx ff80023c.aocec: bus confilct too long
[  146.522243@1] cectx ff80023c.aocec: bus confilct too long
[  176.646246@1] cectx ff80023c.aocec: bus confilct too long
[  207.954248@1] cectx ff80023c.aocec: bus confilct too long
[  221.830275@1] cectx ff80023c.aocec: bus confilct too long
[  236.886242@1] cectx ff80023c.aocec: bus confilct too long

on my fedora workstation, dmesg:

[10255.995047] usb 2-4: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[10256.017048] usb 2-4: New USB device found, idVendor=1058, idProduct=25ee, bcdDevice=40.04
[10256.017050] usb 2-4: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[10256.017052] usb 2-4: Product: My Book 25EE
[10256.017053] usb 2-4: Manufacturer: Western Digital
[10256.017054] usb 2-4: SerialNumber: 3753483253585844
[10256.052077] usb-storage 2-4:1.0: USB Mass Storage device detected
[10256.052191] scsi host10: usb-storage 2-4:1.0
[10256.052269] usbcore: registered new interface driver usb-storage
[10256.055425] usbcore: registered new interface driver uas
[10257.059132] scsi 10:0:0:0: Direct-Access     WD       My Book 25EE     4004 PQ: 0 ANSI: 6
[10257.059368] scsi 10:0:0:1: Enclosure         WD       SES Device       4004 PQ: 0 ANSI: 6
[10257.063107] sd 10:0:0:0: Attached scsi generic sg4 type 0
[10257.063193] scsi 10:0:0:1: Attached scsi generic sg5 type 13
[10257.066186] sd 10:0:0:0: [sdd] Spinning up disk...
[10257.073111] scsi 10:0:0:1: Wrong diagnostic page; asked for 1 got 8
[10257.073112] scsi 10:0:0:1: Failed to get diagnostic page 0x1
[10257.073113] scsi 10:0:0:1: Failed to bind enclosure -19
[10258.080662] .................ready
[10274.464331] sd 10:0:0:0: [sdd] Very big device. Trying to use READ CAPACITY(16).
[10274.464449] sd 10:0:0:0: [sdd] 15628052480 512-byte logical blocks: (8.00 TB/7.28 TiB)
[10274.464449] sd 10:0:0:0: [sdd] 4096-byte physical blocks
[10274.465321] sd 10:0:0:0: [sdd] Write Protect is off
[10274.465323] sd 10:0:0:0: [sdd] Mode Sense: 47 00 10 08
[10274.466066] sd 10:0:0:0: [sdd] No Caching mode page found
[10274.466068] sd 10:0:0:0: [sdd] Assuming drive cache: write through
[10275.839403]  sdd: sdd1 sdd2
[10275.858551] sd 10:0:0:0: [sdd] Attached SCSI disk
[10275.858607] ses 10:0:0:1: Attached Enclosure device

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