T23 lock up after enter KDB either on 6-STABLE or 7-CURRENT

[Ren Zhen]

Thanks a lot. After I remove the kdbmux, it works fine. :)
On 7/2/06, Robert Watson <rwatson at freebsd.org> wrote:
>
>
> On Sun, 2 Jul 2006, Ren Zhen wrote:
>
> > After I login, press Ctrl+Alt+ESC, kernel says:
> > KDB: enter: manual escape to debugger
> > [thread pid 16 tid 100014 ]
> > Stopped at       kdb_enter+0x2b: nop
> > db>
> >
> > Then, my T23 lock up. I can only switch off the computer.
> >
> > But, I use "boot -d" at booting kdb will work fine. I press c it
> continue.
> > When "login:" displayed on the screen, I enter the KDB, it lock up
> again.
> >
> > Both 6-STABLE and 7-CURRENT have this problem.
> >
> > My T23's model is 2647-4NC. Piii 1.13 256M*2 SDR. I have uninstalled one
> > DIMM, but it seems to have no help to this problem.
>
> Try compiling out device kbdmux and see if that fixes things? There are
> reported problems regarding kbdmux's interaction with the debugger.
>
> Robert N M Watson
> Computer Laboratory
> University of Cambridge
>
> >
> > My kernel configuration file is GENERIC with following debug options:
> > options KDB
> > options DDB
> > options GDB
> > options INVARIANTS
> > options INVARIANT_SUPPORT
> > options WITNESS
> > options WITNESS_SKIPSPIN
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> >
>