Error: Failed to execute 'open' on 'USBDevice': Access denied.

treequell

[deleted] Its actually adb kill-server

Thanks, that one got lost somewhere in the fog.

[deleted] How do you add that cool markdown btw?

See https://www.markdownguide.org/basic-syntax#code

xgrg

adb wasn't installed before, I installed it now and ran the command and this was the output I got.
"cannot connect to daemon at tcp:something: Connection refused"

xgrg

And of course flashing still doesn't work.

treequell

I should probably have suggested this earlier, but I would recommend you join the GrapheneOS chatroom on Matrix, to get support with your install there: https://matrix.to/#/#grapheneos:grapheneos.org

There's a greater number of experienced community members there who can help you troubleshoot your installation issues.

xgrg

treequell Sure I might actually do that. Thanks for the suggestion.

OHB

I'm having same issue, have tried all above.
I'm running Ubuntu 20.4...
Have tried Chromium and Brave
Oddly I did succeed early in the year with Pixel6, now wanted to do the same with another Pixel 6.
Both phones give me this error when I try to "Unlock bootloader".
Have tried 4 cables on both usb3 and usbC ports on Nitro Acer laptop..

treequell

Did you plug the cable into the phone, only after the device was in the bootloader interface?

grayway2

If it can help others, I did the following steps to solve the USB access denied message on Ubuntu.

I installed the Android SDK Platform Tools (which has probably nothing to do with the issue)

I enabled the permission "Access USB hardware directly" for Brave from the settings in the OS.

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