Question Permission denied when connecting Galaxy A10s to PC (linux) via USB

[max_max]

Hi all,

I played with apps' permissions (settings->apps) on my Galaxy A10s. The apps were "google"-like: gmail, "google", "google play store" and some others.
After this I tried to connect my smartphone to linux-pc ("Unable to open MTP device "001,001" )
and to windows-pc ("permission denied")

The linux-pc log:

[6031333.349261] usb 1-1: Product: SAMSUNG_Android
[6031333.349264] usb 1-1: Manufacturer: SAMSUNG
[6031333.349266] usb 1-1: SerialNumber: R9WR11AAKNJ
[6031333.615356] usb 1-1: reset high-speed USB device number 4 using xhci_hcd
[6031334.238507] usb 1-1: reset high-speed USB device number 4 using xhci_hcd
[6031339.885304] usb 1-1: USB disconnect, device number 4
[6031340.511196] usb 1-1: new high-speed USB device number 5 using xhci_hcd
[6031340.639183] usb 1-1: New USB device found, idVendor=04e8, idProduct=6860, bcdDevice= 2.23
[6031340.639194] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[6031340.639198] usb 1-1: Product: SAMSUNG_Android
[6031340.639200] usb 1-1: Manufacturer: SAMSUNG
[6031340.639203] usb 1-1: SerialNumber: R9WR11AAKNJ
[6031340.815372] usb 1-1: reset high-speed USB device number 5 using xhci_hcd
[6031341.407385] usb 1-1: reset high-speed USB device number 5 using xhci_hcd

Connection via simple-mtpfs:

[root@support10 Documents]# simple-mtpfs --list-devices
1: SamsungGalaxy models (MTP)
[root@support10 Documents]# /usr/bin/simple-mtpfs --device 1 /mnt/1
LIBMTP PANIC: Trying to dump the error stack of a NULL device!
Then I run "USB debugging" via "Developer options" on my smartphone:

Mar 20 15:08:11 support10 kernel: usb 1-1: new high-speed USB device number 38 using xhci_hcd
Mar 20 15:08:11 support10 kernel: usb 1-1: New USB device found, idVendor=04e8, idProduct=6860, bcdDevice= 2.23
Mar 20 15:08:11 support10 kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Mar 20 15:08:11 support10 kernel: usb 1-1: Product: SAMSUNG_Android
Mar 20 15:08:11 support10 kernel: usb 1-1: Manufacturer: SAMSUNG
Mar 20 15:08:11 support10 kernel: usb 1-1: SerialNumber: R9WR11AAKNJ
Mar 20 15:08:11 support10 kernel: cdc_acm 1-1:1.1: ttyACM0: USB ACM device
Mar 20 15:08:11 support10 journal[1062]: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/Col
orManager/devices/sysfs__null_
Mar 20 15:08:11 support10 journal[1062]: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/Col
orManager/devices/sysfs__null_
Mar 20 15:08:11 support10 journal[1062]: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/Col
orManager/devices/sysfs__null_
Mar 20 15:08:17 support10 gvfsd[4069221]: Error 1: Get Storage information failed.
Mar 20 15:08:17 support10 journal[3997518]: destroyed file has call_when_ready pending
Mar 20 15:08:17 support10 systemd[1383]: Started dbus-:1.2-org.gnome.Shell.HotplugSniffer@10.service.
Mar 20 15:08:19 support10 kernel: usb 1-1: USB disconnect, device number 38
Mar 20 15:08:19 support10 gvfsd[4069221]: PTP: reading event an error 0x05 occurred
Mar 20 15:08:19 support10 journal[3997518]: destroyed file has call_when_ready pending

And I am able to connect as root with 'simple-mtpfs'-utility and with "USB debugging" on my smartphone:

[root@support10 Documents]# /usr/bin/simple-mtpfs -d --device 1 /mnt/1
FUSE library version: 2.9.9
nullpath_ok: 0
nopath: 0
utime_omit_ok: 0
unique: 2, opcode: INIT (26), nodeid: 0, insize: 104, pid: 0
INIT: 7.38
flags=0x73fffffb
max_readahead=0x00020000
INIT: 7.19
flags=0x00000011
max_readahead=0x00020000
max_write=0x00020000
max_background=0
congestion_threshold=0
unique: 2, success, outsize: 40
unique: 4, opcode: GETATTR (3), nodeid: 1, insize: 56, pid: 4070065
getattr /
unique: 4, success, outsize: 120
unique: 6, opcode: GETXATTR (22), nodeid: 1, insize: 65, pid: 4070065
unique: 6, error: -38 (Function not implemented), outsize: 16
unique: 8, opcode: OPENDIR (27), nodeid: 1, insize: 48, pid: 4070065

My question is how to switch my smartphone on connection as a ordinary user (not root)?

Regards,

Max

 

[max_max]

Probably the problem was on linux-pc side:
...
Mar 20 15:07:20 support10 journal[1062]: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/Col
orManager/devices/sysfs__null_
Mar 20 15:07:37 support10 journal[3997518]: destroyed file has call_when_ready pending
...

After reboot of this linux-pc, the problem had been disappeared.