misc/138870: 8.0beta4 PnP problem? lost synaptics trackpad in r40, psm0 not detected

[Martin Cracauer]

>Number:         138870
>Category:       misc
>Synopsis:       8.0beta4 PnP problem? lost synaptics trackpad in r40, psm0 not detected
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Sep 16 03:40:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Martin Cracauer
>Release:        8.0beta4
>Organization:
>Environment:
FreeBSD grisu.cons.org 8.0-BETA4 FreeBSD 8.0-BETA4 #6: Tue Sep 15 23:05:44 EDT 2009     cracauer at grisu.cons.org:/mnt/part2/usr/src/sys/i386/compile/GRISU  i386

>Description:
I just upgraded my Thinkpad R40 to 8-beta4.

I lost my trackpad, psm0 is not longer detected (no dmesg messages
about it, no device created).  At that time in the boot it prints a couple plug'n'play related messages (see below).

I just booted into my 7-stable kernel one more time and it's still there, it's really FreeBSD-8.

The kernel config used for the two versions are identical when it
comes to atkbd and psm.  I have the /boot/loader.conf entry, irq 12 is
not occupied by anything else.


Here is 7-stable's opinion on the matter:
-----------------------------------------
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: [ITHREAD]
psm0: model Synaptics Touchpad, device ID 0
ppc0: <Parallel port> at port 0x3bc-0x3c3 irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode


Here is the new output with 8beta4:
-----------------------------------
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 irq 1 pnpid PNP0303 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
unknown: <PNP0c02> can't assign resources (memory)
unknown: <PNP0680> can't assign resources (port)
unknown: <PNP0680> can't assign resources (port)
uart0: <16550 or compatible> at port 0x3f8-0x3ff irq 4 pnpid PNP0501 on isa0
uart0: [FILTER]
ppc0: <Standard parallel printer port> at port 0x3bc-0x3c3 irq 7 pnpid PNP0400 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode

>How-To-Repeat:
Probably need a thinkpad r40 to reproduce, but I can run whatever test code you like.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: