I also had problems with the internal SD card. It was impossible to write to the card and the reader would not update the firmware anymore.
I opened the device and removed the SD card (very easy, as it is removable).
I tried to read the card with gparted. The programm aborts with overlapping partitions and another mistake with crashes gparted. Nevertheless some mounts are done and on syslog you can see a complex partition (up to sdd10, see below).
I was unable to fsck /dev/sdd on the whole. Fsck only worked on some single partitions while the mounts are active.
I have another pocketbook with a broken screen. Using this SDcard I observed the same behaviour (gparted erorr, no fsck). I saved an image of the SD card using dd. But could not copy it to the other card (hardware error). Mounting the image is not possible: unknown partition table.
However the SDcard from the PB626 (Lux2) was functionally in the PB626 (Lux3). At least after an update with firmware provided by the external SDcard. The serial number is now the one of the old model.
My conclusions are: PB uses a unconventional partition table to prevent experts to play around. This is especially sad since this leaves a broken SD card unrepairable to the user.
So the only way is to fiddle around with the CID as described above in the thread.
Please use tags - MODERATOR
Spoiler:
Dec 23 19:35:44 InaUbuntu kernel: [ 132.629665] usb 5-2: new full-speed USB device number 6 using ohci-pci
Dec 23 19:35:44 InaUbuntu kernel: [ 132.781651] usb 5-2: device descriptor read/64, error -62
Dec 23 19:35:45 InaUbuntu kernel: [ 133.041659] usb 5-2: device descriptor read/64, error -62
Dec 23 19:35:45 InaUbuntu kernel: [ 133.297645] usb 5-2: new full-speed USB device number 7 using ohci-pci
Dec 23 19:35:45 InaUbuntu kernel: [ 133.449640] usb 5-2: device descriptor read/64, error -62
Dec 23 19:35:45 InaUbuntu kernel: [ 133.709632] usb 5-2: device descriptor read/64, error -62
Dec 23 19:35:46 InaUbuntu kernel: [ 133.965626] usb 5-2: new full-speed USB device number 8 using ohci-pci
Dec 23 19:35:46 InaUbuntu kernel: [ 134.381623] usb 5-2: device not accepting address 8, error -62
Dec 23 19:35:46 InaUbuntu kernel: [ 134.529596] usb 5-2: new full-speed USB device number 9 using ohci-pci
Dec 23 19:35:47 InaUbuntu kernel: [ 134.945611] usb 5-2: device not accepting address 9, error -62
Dec 23 19:35:47 InaUbuntu kernel: [ 134.945668] usb usb5-port2: unable to enumerate USB device
Dec 23 19:37:24 InaUbuntu kernel: [ 232.707771] usb 2-1: new high-speed USB device number 5 using ehci-pci
Dec 23 19:37:24 InaUbuntu kernel: [ 232.856649] usb 2-1: New USB device found, idVendor=aaaa, idProduct=8816
Dec 23 19:37:24 InaUbuntu kernel: [ 232.856652] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Dec 23 19:37:24 InaUbuntu kernel: [ 232.856655] usb 2-1: Product: MXT USB Device
Dec 23 19:37:24 InaUbuntu kernel: [ 232.856657] usb 2-1: Manufacturer: MXTronics
Dec 23 19:37:24 InaUbuntu kernel: [ 232.856660] usb 2-1: SerialNumber: 130818v01
Dec 23 19:37:24 InaUbuntu mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-1"
Dec 23 19:37:24 InaUbuntu mtp-probe: bus: 2, device: 5 was not an MTP device
Dec 23 19:37:25 InaUbuntu kernel: [ 232.889029] usb-storage 2-1:1.0: USB Mass Storage device detected
Dec 23 19:37:25 InaUbuntu kernel: [ 232.889360] scsi host6: usb-storage 2-1:1.0
Dec 23 19:37:25 InaUbuntu kernel: [ 232.889454] usbcore: registered new interface driver usb-storage
Dec 23 19:37:25 InaUbuntu kernel: [ 232.891254] usbcore: registered new interface driver uas
Dec 23 19:37:26 InaUbuntu kernel: [ 233.905400] scsi 6:0:0:0: Direct-Access MXT-USB Storage Device 1308 PQ: 0 ANSI: 0 CCS
Dec 23 19:37:26 InaUbuntu kernel: [ 233.906227] sd 6:0:0:0: Attached scsi generic sg4 type 0
Dec 23 19:37:26 InaUbuntu kernel: [ 233.908367] sd 6:0:0:0: [sdd] 7763968 512-byte logical blocks: (3.98 GB/3.70 GiB)
Dec 23 19:37:26 InaUbuntu kernel: [ 233.908986] sd 6:0:0:0: [sdd] Write Protect is off
Dec 23 19:37:26 InaUbuntu kernel: [ 233.908990] sd 6:0:0:0: [sdd] Mode Sense: 03 00 00 00
Dec 23 19:37:26 InaUbuntu kernel: [ 233.909613] sd 6:0:0:0: [sdd] No Caching mode page found
Dec 23 19:37:26 InaUbuntu kernel: [ 233.909620] sd 6:0:0:0: [sdd] Assuming drive cache: write through
Dec 23 19:37:26 InaUbuntu kernel: [ 233.914021] sdd: sdd1 sdd2 sdd3 < sdd5 sdd6 sdd7 sdd8 sdd9 sdd10 >
Dec 23 19:37:26 InaUbuntu kernel: [ 233.920232] sd 6:0:0:0: [sdd] Attached SCSI removable disk
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd2 at /media/georg/Volumn on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd10 at /media/georg/Compressed on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu kernel: [ 234.514297] EXT4-fs (sdd9): mounting ext2 file system using the ext4 subsystem
Dec 23 19:37:26 InaUbuntu kernel: [ 234.518741] EXT4-fs (sdd9): warning: mounting unchecked fs, running e2fsck is recommended
Dec 23 19:37:26 InaUbuntu kernel: [ 234.545384] EXT4-fs (sdd7): mounting ext2 file system using the ext4 subsystem
Dec 23 19:37:26 InaUbuntu kernel: [ 234.549016] EXT4-fs (sdd7): warning: mounting unchecked fs, running e2fsck is recommended
Dec 23 19:37:26 InaUbuntu kernel: [ 234.549021] EXT4-fs warning (device sdd7): ext4_update_dynamic_rev:754: updating to rev 1 because of new feature flag, running e2fsck is recommended
Dec 23 19:37:26 InaUbuntu kernel: [ 234.577002] EXT4-fs (sdd8): mounting ext2 file system using the ext4 subsystem
Dec 23 19:37:26 InaUbuntu kernel: [ 234.579254] EXT4-fs warning (device sdd8): ext4_update_dynamic_rev:754: updating to rev 1 because of new feature flag, running e2fsck is recommended
Dec 23 19:37:26 InaUbuntu kernel: [ 234.594239] FAT-fs (sdd1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd1 at /media/georg/PB626 on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu kernel: [ 234.596977] EXT4-fs (sdd8): mounted filesystem without journal. Opts: (null)
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd8 at /media/georg/disk1 on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27502): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27502): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:26 InaUbuntu dbus[958]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Dec 23 19:37:26 InaUbuntu systemd[1]: Starting Hostname Service...
Dec 23 19:37:26 InaUbuntu kernel: [ 234.670539] EXT4-fs (sdd9): mounted filesystem without journal. Opts: (null)
Dec 23 19:37:26 InaUbuntu kernel: [ 234.670907] EXT4-fs (sdd7): mounted filesystem without journal. Opts: (null)
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd9 at /media/georg/1f6865a6-a5af-4ae0-8dd2-28035d6537df on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu udisksd[4792]: Mounted /dev/sdd7 at /media/georg/disk on behalf of uid 1001
Dec 23 19:37:26 InaUbuntu dbus[958]: [system] Successfully activated service 'org.freedesktop.hostname1'
Dec 23 19:37:26 InaUbuntu systemd[1]: Started Hostname Service.
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27520): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27520): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27531): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:26 InaUbuntu gnome-session[4569]: (nautilus:27531): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:27 InaUbuntu gnome-session[4569]: (nautilus:27533): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:27 InaUbuntu gnome-session[4569]: (nautilus:27533): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:27 InaUbuntu gnome-session[4569]: (nautilus:27539): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:27 InaUbuntu gnome-session[4569]: (nautilus:27539): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
Dec 23 19:37:28 InaUbuntu colord-sane: io/hpmud/pp.c 627: unable to read device-id ret=-1
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/Volumn (device 8:50 is not mounted)
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Unmounted /dev/sdd2 on behalf of uid 1001
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/disk (device 8:55 is not mounted)
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Unmounted /dev/sdd7 on behalf of uid 1001
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/1f6865a6-a5af-4ae0-8dd2-28035d6537df (device 8:57 is not mounted)
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Unmounted /dev/sdd9 on behalf of uid 1001
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/Compressed (device 8:58 is not mounted)
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Unmounted /dev/sdd10 on behalf of uid 1001
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/disk1 (device 8:56 is not mounted)
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Unmounted /dev/sdd8 on behalf of uid 1001
Dec 23 19:37:42 InaUbuntu udisksd[4792]: Cleaning up mount point /media/georg/PB626 (device 8:49 is not mounted)
Dec 23 19:37:43 InaUbuntu udisksd[4792]: Unmounted /dev/sdd1 on behalf of uid 1001