Camera suddently became Error (-52: 'Could not find the requested device on the USB port')

[mfdrone]

Hello,

I am using gphoto2 for a long term timelapse project with a Sony A6000 camera. Everything works just fine but after a certain time (usually a week or two), the camera suddently becomes undetected by gphoto2.

When running the --auto-detect or --summary command i get the error52 and I cannot do anything from this point.

When running the -lusb -v command though the raspberry detects the camera with the given parameter :

Bus 001 Device 002: ID 054c:0994 Sony Corp. ILCE-6000 (aka Alpha-6000) in charging mode
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x054c Sony Corp.
idProduct 0x0994 ILCE-6000 (aka Alpha-6000) in charging mode
bcdDevice 1.00
iManufacturer 1 Sony
iProduct 2 USB Charger
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0022
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 19
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 1

when searching for this issue on the internet I have found that other users have encounter this issue however there is never a known explanation, nor a solution to the problem. Does anybody have a clue on this issue ?

Thank you in advance for you help