Thread: Kobo breaking my usb ports
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Old 12-28-2017, 07:36 PM   #1
geek1011
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Posts: 2,804
Karma: 7025947
Join Date: May 2016
Location: Ontario, Canada
Device: Kobo Mini, Aura Edition 2 v1, Clara HD
Angry Kobo breaking my usb ports


Not again!!! This was fixed quite a few releases ago (I think 4.4.9344 or something like that), and now the issue is back in 4.7.10413.

On all my linux computers, after I unplug/plug my kobo more than 2 or 3 times, or write/read more than about 300mb (it varies), the usb port stops working (with all devices) until a reboot. I can use a different usb port, and it works another 2 or 3 times.

dmesg shows the following interesting lines on the 2nd or 3rd connection:

Spoiler:

Code:
[460780.718814] usb-storage 3-1:1.0: USB Mass Storage device detected
[460780.719020] scsi host7: usb-storage 3-1:1.0
[460781.727629] scsi 7:0:0:0: Direct-Access     Kobo     eReader-4.7.1041 0110 PQ: 0 ANSI: 2
[460781.734500] sd 7:0:0:0: [sdc] 6614013 512-byte logical blocks: (3.39 GB/3.15 GiB)
[460781.846263] sd 7:0:0:0: [sdc] Write Protect is off
[460781.846265] sd 7:0:0:0: [sdc] Mode Sense: 0f 00 00 00
[460781.956375] sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[460782.193979]  sdc:
[460782.416369] sd 7:0:0:0: [sdc] Attached SCSI removable disk
[460782.727933] FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[460802.201803] usb usb3-port1: disabled by hub (EMI?), re-enabling...
[460802.201819] usb 3-1: USB disconnect, device number 77
[460802.312949] sd 7:0:0:0: [sdc] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
[460802.312953] sd 7:0:0:0: [sdc] tag#0 CDB: opcode=0x28 28 00 00 14 49 34 00 00 f0 00
[460802.312955] print_req_error: I/O error, dev sdc, sector 1329460
[460802.312976] sd 7:0:0:0: [sdc] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
[460802.312978] sd 7:0:0:0: [sdc] tag#0 CDB: opcode=0x28 28 00 00 14 4a 24 00 00 10 00
[460802.312979] print_req_error: I/O error, dev sdc, sector 1329700
[460802.314274] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314321] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314358] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314414] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314441] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314452] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314478] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314504] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314530] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314550] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314580] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314595] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314600] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314604] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314609] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314613] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314617] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314624] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314653] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314670] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314676] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.314690] FAT-fs (sdc): FAT read failed (blocknr 1292)
[460802.326572] sd 7:0:0:0: [sdc] Synchronizing SCSI cache
[460802.326587] sd 7:0:0:0: [sdc] Synchronize Cache(10) failed: Result: hostbyte=0x01 driverbyte=0x00
[460802.326795] FAT-fs (sdc): Directory bread(block 12900) failed
[460802.326797] FAT-fs (sdc): Directory bread(block 12901) failed
[460802.326798] FAT-fs (sdc): Directory bread(block 12902) failed
[460802.326799] FAT-fs (sdc): Directory bread(block 12903) failed
[460802.326800] FAT-fs (sdc): Directory bread(block 12904) failed
[460802.326801] FAT-fs (sdc): Directory bread(block 12905) failed
[460802.326802] FAT-fs (sdc): Directory bread(block 12906) failed
[460802.326803] FAT-fs (sdc): Directory bread(block 12907) failed
[460802.326811] FAT-fs (sdc): Directory bread(block 1277548) failed
[460802.326812] FAT-fs (sdc): Directory bread(block 1277549) failed
[460803.366540] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460804.259921] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460804.259987] usb usb3-port1: attempt power cycle
[460805.466581] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460806.363153] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460806.363169] usb usb3-port1: unable to enumerate USB device
[460842.099840] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460842.993200] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460842.993237] usb usb3-port1: attempt power cycle
[460844.203188] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460845.096563] usb usb3-port1: Cannot enable. Maybe the USB cable is bad?
[460845.096621] usb usb3-port1: unable to enumerate USB device


I am at a loss for explaining this issue. I have tried downgrading and upgrading the kernel, changing kobo sd cards, trying different usb cables, trying another kobo (it's an aura ed2), and a whole lot of other things. I am using Arch Linux, Xubuntu 17.10, Debian Sid, and Fedora 27.

Note: no, the sd card in the kobo is not failing.
Last edited by geek1011; 12-28-2017 at 07:38 PM.
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