Arch Linux

cherrypicker707

Member

Registered: 2025-04-09

Posts: 1

Unable to send files to new ebook reader

Hello. I have bough some cheap ebook reader recently (Bemi Cognita Light 2). I cannot send files to it when I try to connect it via USB. It works fine when I connect it to my Windows laptop, the reader is recognized as USB drive. However, when I connect the reader to my PC with Arch Linux, it shows up in the output of

lsblk

command, but only for a short moment after connecting, then it disappears. I also could not access the reader using MTP. Here is output from

sudo dmesg | tail -n 30

command:

[  227.862262] sd 14:0:0:1: [sdd] Assuming drive cache: write through
[  227.862663] sd 14:0:0:0: [sdc] Attached SCSI removable disk
[  227.863111] sd 14:0:0:1: [sdd] Attached SCSI removable disk
[  227.864651] sd 14:0:0:1: [sdd] Test Unit Ready failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  228.231045] usb 1-4: new high-speed USB device number 6 using xhci_hcd
[  228.448788] usb 1-4: New USB device found, idVendor=2207, idProduct=2818, bcdDevice= 1.00
[  228.448797] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  228.448801] usb 1-4: Product: Cognita Light2
[  228.448806] usb 1-4: Manufacturer: RockChip
[  228.448810] usb 1-4: SerialNumber: 000000000000000000000000000000
[  228.460878] usb-storage 1-4:1.0: USB Mass Storage device detected
[  228.461105] scsi host14: usb-storage 1-4:1.0
[  229.467109] scsi 14:0:0:0: Direct-Access     RockChip eReader          1.00 PQ: 0 ANSI: 0
[  229.467279] scsi 14:0:0:1: Direct-Access     RockChip eReader          1.00 PQ: 0 ANSI: 0
[  229.467565] sd 14:0:0:0: Attached scsi generic sg2 type 0
[  229.467751] sd 14:0:0:1: Attached scsi generic sg3 type 0
[  229.468430] sd 14:0:0:0: [sdc] 15482880 512-byte logical blocks: (7.93 GB/7.38 GiB)
[  229.468638] sd 14:0:0:1: [sdd] Media removed, stopped polling
[  229.468761] sd 14:0:0:0: [sdc] Write Protect is off
[  229.468766] sd 14:0:0:0: [sdc] Mode Sense: 00 00 00 00
[  229.468883] sd 14:0:0:0: [sdc] Asking for cache data failed
[  229.468886] sd 14:0:0:0: [sdc] Assuming drive cache: write through
[  229.469168] sd 14:0:0:1: [sdd] Attached SCSI removable disk
[  229.487552]  sdc:
[  229.487576] sd 14:0:0:0: [sdc] Attached SCSI removable disk
[  229.588426] FAT-fs (sdc): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[  229.902171] usb 1-4: USB disconnect, device number 6
[  332.758047] EXT4-fs (sda1): error count since last fsck: 11
[  332.758061] EXT4-fs (sda1): initial error at time 1732287209: __ext4_get_inode_loc_noinmem:4558: inode 528284: block 2097433
[  332.758086] EXT4-fs (sda1): last error at time 1732287402: __ext4_get_inode_loc_noinmem:4558: inode 541749: block 2098275