8beta sleep attempts on ThinkPad R51

[Riccardo Mottola <riccardo.mottola%libero.it@localhost>]

Hi,

I was working on this with Maya, I make my attempts public in hope of 
more help :)

I got a 8beta kernel from Releng and tested it on a ThinkPad R51 with 
intel video. Putting it to sleep as-is doesn't work well. I used boot-c 
to disable a couple of drivers:

I tried to disable at boot time these drivers: i915drmkms, iwi, fxp, audio

I get this behaviour when hitting the sleep key:
- the display stays on with console
- the moon LED lights on! yeay a little bit of sleeps! but display stays 
on and power led on too, blinks
- display goes off... and hard reboot

kernel panic! no scrollback, but a core. However trying to inspect it:

crash -M netbsd.0.core -N netbsd.0
crash: kvm_nlist: bad namelist


I tried my best with gdb and "target kvm" and got this:

(gdb) bt
#0  0xc011dace in cpu_reboot ()
#1  0xc08d7d42 in vpanic ()
#2  0xc08d7dcc in panic ()
#3  0xc01201df in trap ()
#4  0xc0116e48 in alltraps ()
#5  0xdbb69d50 in ?? ()
#6  0xc042ee19 in acpi_enter_sleep_state ()
#7  0xc042f0b7 in sysctl_hw_acpi_sleepstate ()
#8  0xc08bad5c in sysctl_dispatch ()
#9  0xc08baf2b in sys___sysctl ()
#10 0xc01550f1 in syscall ()
#11 0xc010062d in Xsyscall ()
#12 0xdbb69fa8 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)