I am trying to install Alpine Linux on Oracle Cloud AArch64 VM. I had already installed bootloader (Grub, arm64-efi), kernel (5.10.75) and userspace on it. In order to debug boot issues, I setup the serial console by appending console=tty0 console=ttyS0,115200 to the kernel cmdline. After booting, I can see the Grub output and kernel dmesg output on the serial, but nothing else. The machine stucks somewhere during boot, but I cannot see any stdout of the init process. The only output is partial log that are hard coded to be redirected to /dev/kmsg in initrd's init script, for example: Mounting root: ok. I have another amd64 Oracle Cloud VM running Arch Linux, but console=tty0 console=ttyS0,115200 works fine.
VNC requires the virtio_gpu kernel module and is not currently loaded. I think loading could give me a usable VNC connection, but I still want to use serial. Could anyone help me on that? Thank you very much.
lspci from another Oracle Cloud AArch64 VM running Ubuntu:
00:00.0 Host bridge: Red Hat, Inc. QEMU PCIe Host bridge
00:01.0 Display controller: Red Hat, Inc. Virtio GPU (rev 01)
00:02.0 USB controller: Red Hat, Inc. QEMU XHCI Host Controller (rev 01)
00:03.0 Ethernet controller: Red Hat, Inc. Virtio network device
00:10.0 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.1 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.2 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.3 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.4 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.5 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.6 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:10.7 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.0 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.1 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.2 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.3 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.4 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.5 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.6 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:11.7 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.0 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.1 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.2 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.3 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.4 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.5 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.6 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
00:12.7 PCI bridge: Red Hat, Inc. QEMU PCIe Root port
18:00.0 SCSI storage controller: Red Hat, Inc. Virtio SCSI (rev 01)
