On boot of ArchLinux32 2024.07.10 on an old 32-bit laptop, it successfully shows the boot menu, starts the kernel, and then hangs. The terminal is flooded with
Probing EDD (edd=off to disable)... ok uhci_hcd 0000:00:1d.0: request interrupt 9 failed ...: init 0000:00:1d.0 fail, -16 ...: probe with driver uhci_hcd failed with error -16 genirq: Flags mismatch irq 9. 00000080 (uhci_hcd:usb1) vs. 00002080 (acpi) ehci-pci 0000:00:1d.7: request interrupt 9 failed ...: init 0000:00:1d.7 fail, -16 and so on.
Pressing tab and adding edd=off to the kernel parameters does not change the behaviour.
Booting from an old hard drive, it is able to boot OK with
4.10.0-28-generic i686 which has the boot flags
ro forcepae lapic but adding those flags to the Arch kernel does not help.