Connecting OnePLus One with PC

[nutzernam]

Hi,
i try connect my OPO (15.04 (r3)) with my PC ( Ubuntu 18.04).
I can see it in the Filemanager (bacon) but can’t mount it: "MTP-Device cannot be opened".

With adb i have access.

So, how can i access the phone via filemanager on my PC?

Here the output of sudo mtp-detect on the PC:

**libmtp version: 1.1.13

Listing raw device(s)
Device 0 (VID=05c6 and PID=6765) is a Qualcomm (for OnePlus) One (MTP+ADB).
Found 1 device(s):
Qualcomm (for OnePlus): One (MTP+ADB) (05c6:6765) @ bus 1, dev 5
Attempting to connect device(s)
ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
LIBMTP libusb: Attempt to reset device
outep: usb_get_endpoint_status(): Device or resource busy
ignoring libusb_claim_interface() = -6LIBMTP PANIC: failed to open session on second attempt
Unable to open raw device 0
OK.**

[advocatux]

@nutzernam probably this https://forums.ubports.com/topic/1015/howto-opo-fix-mtp-driver-permissions

[nutzernam]

Thank you for the quick answer!
But i have a problem with this HowTo:
When i start "abd reboot recovery" i come to the Recovery Screen.
But what next?
Choose one of the options? Which one? When i try to access the phone by "adb shell" the terminal shows "~ # " and not "...@phablet..."
Since there is a warning ( it can damage your system files! ) i want to be sure what to do next:
Choose an option or continue in the terminal?

[nutzernam]

This seems to be the solution for my problem, so i added my question to the other thread.