M5Burner cannot publish BIN file due to DBus error

LBertrand

Hello,
I am trying to publish a firmware .bin file with M5Burner. The problem is that the + buttons to select the .bin file or the cover illustration do not respond.

In the terminal, I get this error message.
[16551:1207/221226.940000:ERROR:select_file_dialog_impl_portal.cc(698)] Portal returned error: org.freedesktop.DBus.Error.AccessDenied: Portal operation not allowed: Unable to open /proc/16551/root

It seems to be trying to open a connection to another process but cannot access procfs as non-root. I tried running M5Burner as sudo but it won't start because of a security restriction apparently in Chromium:
[1207/223917.916497:FATAL:electron_main_delegate.cc(290)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.

This is running on Linux Mint 22 Cinnamon (amd64), based on Ubuntu Noble.

Any suggestions?
Thanks
--Louis

kuriko

@LBertrand
have you tried sudo --no-sandbox ./M5Burner ?

LBertrand

@kuriko No, that didn't work.
I don't think it's worth pursuing further. It
seems to be a problem with Chromium. M5burner version 202501081800 works fine for me now.
Thanks

peolsolutions

An M5Burner DBus error may occur when publishing a BIN file due to permission issues, missing dependencies, or port conflicts. Ensure there is no other application using the same serial port and run M5Burner as an administrator, restart the DBus service, and ensure M5Burner is running as an administrator. Reinstall M5Burner, update dependencies and ensure that the USB cable or port is not faulty if the issue persists.

peolsolutions

The M5Burner DBus error when publishing a BIN file usually indicates a permissions or communication issue between the app and system services. To fix it, try running M5Burner as administrator (or with sudo on Linux), ensure DBus is properly installed, and check USB device access permissions on your system.