probleme similaire avec des clefs usb (peut être de mauvaise qualité aussi...?) qui ont une vie erratique (changeante), parfois en lecture seule, parfois non, parfois même en root en ouvrant nautilus, en ligne de commande avec chmod et chown, rien n'y change....
Alors avec les commande que tu proposes, je vois en effet que ma clef en question est en ro et non rw, mais le probleme c'est que j'ai l'impression que c'est automatique sur la plupart des clefs. Elles sont en lecture/ecriture sur d'autres machines, mais pas sur celle-ci qui me fait d'ailleurs des misère au transfère de fichiers, en écriture, je ne sais pas si c'est lié?
[ 2269.248700] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start a2010000)
[ 2269.248811] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 08808680)
[ 2269.248860] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 28481000)
[ 2269.249118] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 84020004)
[ 2269.249174] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0e1099a0)
[ 2269.249444] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 80260a00)
[ 2269.249667] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 00408200)
[ 2269.249781] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 9c108c20)
[ 3244.575831] sr 5:0:0:0: [sr0] tag#27 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 3244.575834] sr 5:0:0:0: [sr0] tag#27 Sense Key : Illegal Request [current]
[ 3244.575836] sr 5:0:0:0: [sr0] tag#27 Add. Sense: Logical block address out of range
[ 3244.575839] sr 5:0:0:0: [sr0] tag#27 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 3244.575840] blk_update_request: I/O error, dev sr0, sector 0
[ 3244.587822] sr 5:0:0:0: [sr0] tag#28 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 3244.587824] sr 5:0:0:0: [sr0] tag#28 Sense Key : Illegal Request [current]
[ 3244.587826] sr 5:0:0:0: [sr0] tag#28 Add. Sense: Logical block address out of range
[ 3244.587828] sr 5:0:0:0: [sr0] tag#28 CDB: Read(10) 28 00 00 00 00 00 00 00 01 00
[ 3244.587830] blk_update_request: I/O error, dev sr0, sector 0
[ 3244.587833] Buffer I/O error on dev sr0, logical block 0, async page read
[ 4626.889849] usb 3-3: USB disconnect, device number 2
[ 7694.423931] usb 3-3: new full-speed USB device number 5 using xhci_hcd
[ 7694.567177] usb 3-3: New USB device found, idVendor=046d, idProduct=c52b
[ 7694.567182] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7694.567186] usb 3-3: Product: USB Receiver
[ 7694.567190] usb 3-3: Manufacturer: Logitech
[ 7694.579173] logitech-djreceiver 0003:046D:C52B.0009: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-3/input2
[ 7694.703463] input: Logitech Wireless Mouse as /devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.2/0003:046D:C52B.0009/0003:046D:4055.000A/input/input17
[ 7694.703746] logitech-hidpp-device 0003:046D:4055.000A: input,hidraw1: USB HID v1.11 Mouse [Logitech Wireless Mouse] on usb-0000:00:14.0-3:1
[ 8342.145933] usb 3-10: USB disconnect, device number 4
[ 8346.141927] usb 3-1: new high-speed USB device number 6 using xhci_hcd
[ 8346.283879] usb 3-1: New USB device found, idVendor=ffff, idProduct=5678
[ 8346.283885] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8346.283888] usb 3-1: Product: Disk 2.0
[ 8346.283892] usb 3-1: Manufacturer: USB
[ 8346.283895] usb 3-1: SerialNumber: 3398611037966436574
[ 8346.284661] usb-storage 3-1:1.0: USB Mass Storage device detected
[ 8346.285511] scsi host6: usb-storage 3-1:1.0
[ 8347.306884] scsi 6:0:0:0: Direct-Access VendorCo ProductCode 2.00 PQ: 0 ANSI: 4
[ 8347.307913] sd 6:0:0:0: Attached scsi generic sg3 type 0
[ 8347.308124] sd 6:0:0:0: [sdc] 61440000 512-byte logical blocks: (31.5 GB/29.3 GiB)
[ 8347.308275] sd 6:0:0:0: [sdc] Write Protect is off
[ 8347.308281] sd 6:0:0:0: [sdc] Mode Sense: 03 00 00 00
[ 8347.308427] sd 6:0:0:0: [sdc] No Caching mode page found
[ 8347.308437] sd 6:0:0:0: [sdc] Assuming drive cache: write through
[ 8347.309875] sdc: sdc1
[ 8347.311231] sd 6:0:0:0: [sdc] Attached SCSI removable disk
[ 8347.646429] FAT-fs (sdc1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 8347.771015] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771018] FAT-fs (sdc1): Filesystem has been set read-only
[ 8347.771021] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771023] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771024] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771025] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771027] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771028] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771029] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771031] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8347.771033] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8362.143586] fat_get_cluster: 567 callbacks suppressed
[ 8362.143589] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[ 8362.143677] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0803438d)
[ 8362.366943] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[ 8362.367097] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0803438d)
[ 8461.024581] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024584] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024586] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024587] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024589] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024590] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024592] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024593] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637984, start 91008420)
[ 8461.024604] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637985, start 04180040)
[ 8461.024605] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489637985, start 04180040)
[ 9065.865370] fat_get_cluster: 96 callbacks suppressed
[ 9065.865372] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[ 9065.865421] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0803438d)
[ 9065.865473] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start a2010000)
[ 9065.865525] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 08808680)
[ 9065.866261] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 28481000)
[ 9065.866439] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 84020004)
[ 9065.866467] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0e1099a0)
[ 9065.866626] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 80260a00)
[ 9065.866723] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 00408200)
[ 9065.866776] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 9c108c20)
[16179.843306] fat_get_cluster: 52 callbacks suppressed
[16179.843308] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[16179.843415] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0803438d)
[16180.074550] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[16180.074685] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0803438d)
[16251.116805] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 0, start 05e0484c)
[16251.121399] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121404] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121406] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121407] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121409] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121410] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121411] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121413] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)
[16251.121414] FAT-fs (sdc1): error, fat_get_cluster: invalid start cluster (i_pos 489638368, start 13108200)