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#1 2022-01-31 15:44:03

Mike-thinky
Member
Registered: 2021-10-28
Posts: 30  

Kobo Aura HD usb connection problems part 2

Hi,

A kobo Aura HD was connected, it was recognised, and I then was able to load some pdf's onto it. I then wanted to update the firmware, using this page as a guide:
https://cheat.readthedocs.io/en/latest/kobo.html

In order to have some more free space to type on the desk I moved the kobo as carefully as I could, but the cable briefly lost contact during the move, I now cannot see any files on the kobo.

[1393662.168185] usb-storage 2-1:1.0: USB Mass Storage device detected
[1393662.168681] scsi host6: usb-storage 2-1:1.0
[1393663.179066] scsi 6:0:0:0: Direct-Access     Kobo     eReader-2.4.1    0110 PQ: 0 ANSI: 2
[1393663.179849] sd 6:0:0:0: Attached scsi generic sg3 type 0
[1393663.181673] sd 6:0:0:0: Power-on or device reset occurred
[1393663.184711] sd 6:0:0:0: [sdc] 6676478 512-byte logical blocks: (3.42 GB/3.18 GiB)
[1393663.297423] sd 6:0:0:0: [sdc] Test WP failed, assume Write Enabled
[1393663.407413] sd 6:0:0:0: [sdc] Asking for cache data failed
[1393663.407431] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[1393663.907475] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[1393762.051145] usb 2-1: USB disconnect, device number 96
[1393960.993462] usb 2-1: new high-speed USB device number 97 using xhci_hcd
[1393961.147922] usb 2-1: New USB device found, idVendor=2237, idProduct=4193, bcdDevice= 1.10
[1393961.147932] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[1393961.147936] usb 2-1: Product: eReader-2.4.1
[1393961.147940] usb 2-1: Manufacturer: Kobo
[1393961.147943] usb 2-1: SerialNumber: N204B33402399
[1393961.152376] usb-storage 2-1:1.0: USB Mass Storage device detected
[1393961.153005] scsi host6: usb-storage 2-1:1.0
[1393962.154981] scsi 6:0:0:0: Direct-Access     Kobo     eReader-2.4.1    0110 PQ: 0 ANSI: 2
[1393962.155843] sd 6:0:0:0: Attached scsi generic sg3 type 0
[1393962.157758] sd 6:0:0:0: Power-on or device reset occurred
[1393962.160794] sd 6:0:0:0: [sdc] 6676478 512-byte logical blocks: (3.42 GB/3.18 GiB)
[1393962.267704] sd 6:0:0:0: [sdc] Test WP failed, assume Write Enabled
[1393962.377781] sd 6:0:0:0: [sdc] Asking for cache data failed
[1393962.377804] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[1393962.887810] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[1394143.650523] usb 2-1: USB disconnect, device number 97

that shows two succesive attempts at connection.

lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0    7:0    0   512B  1 loop 
sda      8:0    0   1.8T  0 disk 
├─sda1   8:1    0  23.3G  0 part /
├─sda2   8:2    0     1K  0 part 
├─sda5   8:5    0   9.3G  0 part /var
├─sda6   8:6    0   976M  0 part [SWAP]
├─sda7   8:7    0  18.6G  0 part /tmp
└─sda8   8:8    0   1.8T  0 part /home
sdb      8:16   0 931.5G  0 disk 
├─sdb1   8:17   0   128M  0 part 
└─sdb2   8:18   0 931.4G  0 part /data
sdc      8:32   1   3.2G  0 disk 
sr0     11:0    1  1024M  0 rom  

so lsblk shows the 3.2GB fat partition, gparted thinks it is only 512b in size, but the kobo starts up and runs so the card is still ok, It also was ready to load and update through windows.

sudo fdisk -l
Disk /dev/sda: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: Samsung SSD 870 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x9e51261c

Device     Boot     Start        End    Sectors  Size Id Type
/dev/sda1  *         2048   48828415   48826368 23.3G 83 Linux
/dev/sda2        48830462 3907028991 3858198530  1.8T  5 Extended
/dev/sda5        48830464   68360191   19529728  9.3G 83 Linux
/dev/sda6        68362240   70361087    1998848  976M 82 Linux swap / Solaris
/dev/sda7        70363136  109422591   39059456 18.6G 83 Linux
/dev/sda8       109424640 3907028991 3797604352  1.8T 83 Linux


Disk /dev/sdb: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 860 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EEB62325-CE32-4D93-BBB5-A0E0F8F14663

Device      Start        End    Sectors   Size Type
/dev/sdb1      34     262177     262144   128M Microsoft reserved
/dev/sdb2  264192 1953523711 1953259520 931.4G Microsoft basic data


Disk /dev/loop0: 512 B, 512 bytes, 1 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x220acfb8

fdisk cant see it properly, all I can think is that the usb handshakes are being mis-interpreted?

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