UHCI Kernel Panic on Acer Travelmate 290

[Andreas Kohn]

Hi,

Yesterday I had the chance to try DF (2004-11-15 2CSNAP, ... I know,
old) on an Acer Travelmate 290.

Got this panic (manually transcribed):

. ..
uhci0: <Intel 82801DB (ICH4) USB Controller USB-A> port 0x1200-0x121f
at device 29.0 on pci0

Fatal trap 12: page fault while in kernel mode

fault virtual address = 0xe7e02
fault code               = supervisor read, page not present
instruction pointer = 0x8:0xc00e9d05
stack pointer = 0x10:0xc062db10
frame pointer = 0x10:0xc062db10
code segment = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL=0
current process = 0 (swapper)
current thread = pri 12
interrupt mask = net tty bio cam
kernel = type 12, code 0
stopped at 0xc00e9d05 cmpb %cs:0x1(%esi), %bl
db> where
kernbase (cc98b620, c0415cea, c062dbc4, 50a, e8) at 0xc00e9d05
_end(cb9d08c4, c4f6ec8b, 81067540, ffffe5, e67f2400) at 0xc062db7c

With verbose mode, there was only one additional line between uhci0
and the panic about
pci_cfg_intr_virgin(?) using routable interrupt 5.
Same panic.

With enabled ACPI, the machine froze after printing
acpi0: <INSYDE RSDT_000> on motherboard
installed MI handler for int 9
[freeze]

Machine in question is Acer Travelmate 290 with Pentium M 1400, 512M ram. 
I assume the panic comes from the strange way the CD-ROM drive is
attached. It's removable and apparently connected via USB.

Anyways, unfortunately I will not be able to do any other testing on
this machine, so this is merely an FYI, perhaps someone sees something
obvious.
Sorry for not being more helpful.

Regards,
Andreas