I experienced this problem 2 weeks ago.
System
- new Dell Precision 3590 with Windows 11 Pro (updated)
- bitlocker, secure boot and fastboot enabled
Problem description / things I did
- prepare liveusb with ubuntu 24.04.2 using an ubuntu 22.04 installation
- power up the notebook, press F12 and select the usb device
- press “Try or install ubuntu” in grub
- once loaded, select language then close the setup (that was my first time with the new installer, I did not know there is a slide with “try ubuntu”)
- try programs, hardware etc
- shut down the notebook
Then, after the new start, bitlocker asked me the key to unlock windows.
I previously completed the Windows installation, so the key was saved in my windows account and I recovered it.
That said, after reading this post I tried again today the previous steps but I was not able to reproduce this problem.
I don’t know what caused the problem (first time changing boot device on the new notebook? different usb pen? different program to prepare the live usb [today I used balenaEtcher]?)
However, I think that a warning in the documentation to complete Windows configuration and store the bitlocker key before to try or install ubuntu could be really important. At least if people are interested in a dual boot installation.
Thank you