Kernel stuck on boot after sio0 probe

John Baldwin jhb at
Wed Jun 2 19:41:18 GMT 2004

On Wednesday 02 June 2004 03:23 pm, Lukas Ertl wrote:
> Hi there,
> a new kernel from about three hours ago is stuck at boot after the sio0
> probe:
> sio0: configured irq 4 not in bitmap of probed irqs 0
> sio0: port may not be enabled
> sio0 port 0x3f8-0x3ff irq 4 on acpi0
> sio0: type 8250 or not responding
> Then nothing, not even on verbose boot.
> Usually it would continue with the ppc0 probing stuff:
> ppc0 port 0x3bc-0x3c3 irq 7 on acpi0
> ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
> ppbus0: <Parallel port bus> on ppc0
> ppi0: <Parallel I/O> on ppbus0
> Last known working kernel is from Fri May 28 11:49:33 CEST.
> Any ideas?

Need more of a dmesg.  You can try reverting acpi_pci_link.c's last commit as 
it exposes other bugs that can cause this.

John Baldwin <jhb at>  <><
"Power Users Use the Power to Serve"  =

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