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The graphical installer is not enabled on the arm64 debian-installer images for 18.04 so the serial console is used. The console device should be detected automatically from the firmware, but if it is not then after you boot linux from the GRUB menu you will see a “Booting Linux” message, then nothing more.
If you hit this issue you will need to set a specific console config on the kernel command line. Hit e
for “Edit Kernel command-line” at the GRUB menu, and change
--- quiet
to
console=<device>,<speed>
e.g.
console=ttyAMA0,115200n8
. When finished hit Control-x to continue booting with new setting.
5.1.2. Juno Installation
5.1. Booting the Installer on 64bit ARM5.1.1. Console configuration5.1.2. Juno Installation5.1.3. Applied Micro Mustang Installation5.1.4. Booting by TFTP5.1.4.1. TFTPbooting in UBoot5.2. Accessibility5.2.1. Installer frontend5.2.2. Board Devices5.2.3. HighContrast Theme5.2.4. Zoom5.2.5. Preseeding5.2.6. Accessibility of the installed system5.3. Boot Parameters5.3.1. Boot console5.3.2. Ubuntu Installer Parameters5.3.3. Using boot parameters to answer questions5.3.4. Passing parameters to kernel modules5.3.5. Blacklisting kernel modules5.4. Troubleshooting the Installation Process5.4.1. CDROM Reliability5.4.1.1. Common issues5.4.1.2. How to investigate and maybe solve issues5.4.2. Boot Configuration5.4.3. Interpreting the Kernel Startup Messages5.4.4. Reporting Installation Problems5.4.5. Submitting Installation Reports