Re: Lenovo x220 - hangs on shutdown

Hi kib,

Is there a wiki page or some other kind of documentation descibing how
AMT works?

I'd like to set this up at home on some newer machines (read: buy
machines that have this) but I don't know what/where to start.

Thanks!



-adrian

On 22 July 2013 02:51, Konstantin Belousov <kostikbel_at_gmail.com> wrote:
> On Sun, Jul 21, 2013 at 10:52:18PM +0200, Joel Dahl wrote:
>> On Sun, Jul 21, 2013 at 07:12:33PM +0300, Konstantin Belousov wrote:
>> > On Sun, Jul 21, 2013 at 09:20:45AM +0200, Joel Dahl wrote:
>> > > On Tue, Jul 16, 2013 at 10:48:35PM +0200, Joel Dahl wrote:
>> > > > Hi,
>> > > >
>> > > > Yesterday I upgraded my Lenovo x220 to the latest current (r253368). Now it hangs when I do a shutdown from an xterm. The screen just goes black and the fan never spins down. It doesn't respond to ping.
>> > > >
>> > > > It didn't do this while I was running a current from mid-June.
>> > > >
>> > > > Any specific revision I should try to back out before I start a time consuming binary search?
>> > >
>> > > I found it. r252652 works. r252653 does not.
>> >
>> > What is the chipset on your machine ?
>>
>> Intel Core i7-2640M / Mobile Intel QM67 Express Chipset
>>
>> > Do you have AMT ?  If yes, please configure serial over LAN using AMT
>> > and use it for the console, to obtain the usual debugging information
>> > from the kernel.  At least, 'ps' output from ddb is needed.
>>
>> I found "Intel (R) AMT Control" in the BIOS. It's enabled. I haven't figured
>> out how it works yet though.
>
> You need another machine, where you should install amtterm.
> On the target, use the loader.conf to redirect console to
> AMT Serial over LAN device.
>
> On my test machine, I have (output from pciconf -lv)
>
> uart2_at_pci0:0:22:3:   class=0x070002 card=0x200a8086 chip=0x1c3d8086 rev=0x04 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '6 Series/C200 Series Chipset Family KT Controller'
>     class      = simple comms
>     subclass   = UART
>
> and then I put into loader.conf
>
> console="comconsole"
> comconsole_pcidev="0:22:3"
>
> Connect to the target with amtterm.  Note that during the PCI bus scan
> the connection could be lost, you would need to reconnect.
>
> You need to set up AMT in the BIOS, including enable of the SoL, remote
> connections, password etc.  Intel policy on the password strength is
> distinctly annoying.