Public bug reported:
When I enable USB legacy keyboard support in my BIOS (my BIOS calls it
"USB Keyboard Support"), my machine freezes on boot (before usplash).
It does not lock up when I boot with "acpi=ht", but it does hang when I
specify "pci=noacpi".
I have a Shuttle AK31A v3.1 motherboard (circa 2001) with the latest
BIOS (released in 2003).
I recompiled the kernel with the following changes to the config:
CONFIG_ACPI_DEBUG=y
CONFIG_ACPI_DEBUG_FUNC_TRACE=y
and booted with the following appended to the kernel parameters:
console=ttyS0,115200n8r acpi.debug_layer=0xffffffff
acpi.debug_level=0xffffffff
Attached is the last little bit of kernel output (captured over a serial cable).
It does not matter whether I have a USB keyboard plugged in or not -- it
freezes either way. However, I have never tried booting without a PS/2
keyboard plugged in (I use two keyboards because I have a multiseat
setup). I'll try booting without any keyboard and with just a USB
keyboard to see if either of those cases make a difference.
I'm running Ubuntu 8.10 (Intrepid Ibex) although I also had this problem
in Hardy.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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ACPI freeze on boot when USB keyboard support enabled in BIOS
https://bugs.launchpad.net/bugs/310176
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