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build_library/oem/ami: Drop bare earlycon on arm64 #4314

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Merged
chewi merged 1 commit into from
Oct 9, 2026
Merged

build_library/oem/ami: Drop bare earlycon on arm64 #4314

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2 changes: 1 addition & 1 deletion build_library/oem/ami/grub.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -13,5 +13,5 @@ if [ "$grub_platform" = pc ]; then
terminal_output serial_com0
fi
if [ "$grub_cpu" = arm64 ]; then
set linux_console="console=tty1 console=ttyS0,115200n8 earlycon"
set linux_console="console=tty1 console=ttyS0,115200n8"
fi
1 change: 1 addition & 0 deletions changelog/bugfixes/2026-10-09-ec2-arm64-earlycon.md
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@@ -0,0 +1 @@
- AWS arm64: Removed bare `earlycon` from the kernel command line. It took the UART address from the ACPI SPCR table, which is wrong on Graviton, and could hang boot when an NVMe device was mapped at that address, e.g. on t4g instances with an additional EBS volume. ([Flatcar#2446](https://github.com/flatcar/Flatcar/issues/2446))