Another photon2 device not found

Went to: Device Setup | Tools | Particle clicked select device, says not found.
Not a surprise, when I run lsusb, the device is not there.
It is blinking a blue led. Reset does not change. Needless to say, this is my firs particle device.
(If Linux can't see it, neither will my Windows VM's. )

Hold down the MODE button and tap RESET. Continue to hold down MODE until the status LED blinks yellow, then try lsusb again.

And I have to mention: You're sure it's a USB data cable and not just a micro-b charger cable (no data), correct?

Thank you. Now shows Particle DFU mode.
moving forward.