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Date:      Thu, 20 Jun 2013 09:29:01 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Bengt Ahlgren <bengta@sics.se>
Cc:        freebsd-acpi@freebsd.org
Subject:   Re: AMT console (was: Fixing suspend/resume on Lenovo x220)
Message-ID:  <20130620062901.GI91021@kib.kiev.ua>
In-Reply-To: <20130620061619.GH91021@kib.kiev.ua>
References:  <20130613134922.M8280@martymac.org> <201306131016.57098.jhb@freebsd.org> <uh7fvwd4uac.fsf_-_@P142.sics.se> <20130620061619.GH91021@kib.kiev.ua>

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On Thu, Jun 20, 2013 at 09:16:19AM +0300, Konstantin Belousov wrote:
> On Thu, Jun 20, 2013 at 12:20:27AM +0200, Bengt Ahlgren wrote:
> > John Baldwin <jhb@freebsd.org> writes:
> >=20
> > > On Thursday, June 13, 2013 10:00:21 am Ganael LAPLANCHE wrote:
> > >> Hi,
> > >>=20
> > >> As you may know, suspend/resume has been broken on Lenovo x220 for a
> > >> long time now, see :
> > >>=20
> > >> http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/174504
> > >>=20
> > >> I have been able to do a suspend(S3)/resume operation in text mode (=
it
> > >> works, but console stays dark at resume, I had to connect through ss=
h ;
> > >> also, resume hangs if X is started with i915kms.ko loaded) and colle=
ct
> > >> the following verbose logs :
> > >
> > > Interesting, I connected a serial console via AMT but wasn't able to =
get
> > > any output during resume.  Is this with a stock kernel?
> >=20
> > Does the console via AMT otherwise work for you?
> >=20
> > I'm trying to set up AMT as the console on a TP X201.  I got the serial
> > over LAN working using amtterm from another machine - verified with cu
> > on the tty (ttyu2) that typing on both ends shows up at the other end
> > before trying console redirection.  The device is:
> >=20
> > uart2: <Non-standard ns8250 class UART with FIFOs> port 0x1808-0x180f m=
em 0xf2524000-0xf2524fff irq 17 at device 22.3 on pci0
> >=20
> > uart2@pci0:0:22:3:	class=3D0x070002 card=3D0x216217aa chip=3D0x3b678086=
 rev=3D0x06 hdr=3D0x00
> >     vendor     =3D 'Intel Corporation'
> >     device     =3D '5 Series/3400 Series Chipset KT Controller'
> >     class      =3D simple comms
> >     subclass   =3D UART
> >     bar   [10] =3D type I/O Port, range 32, base 0x1808, size  8, enabl=
ed
> >     bar   [14] =3D type Memory, range 32, base 0xf2524000, size 4096, e=
nabled
> >     cap 01[c8] =3D powerspec 3  supports D0 D3  current D0
> >     cap 05[d0] =3D MSI supports 1 message, 64 bit=20
> >=20
> > I've set:
> >=20
> > hint.uart.2.flags=3D"0x10"
> > console=3D"comconsole"
> >=20
> > in /boot/loader.conf, but the loader just hangs after printing:
> >=20
> > Loading /boot/defaults/loader.conf
> >=20
> > Any advice?  Is uart2 unusable as a console?  It does not say "flags
> > 0x10" in the device probe - does that mean it won't work?
>=20
> You should use
> comconsole_pcidev=3D0:0:22:3
Oops,
comconsole_pcidev=3D0:22:3

Sorry.


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