freebsd stable - Apr 2006 - sio+acpi woes on HP DL145 G2

On 4/8/06, Dmitry Morozovsky <marck@rinet.ru>
wrote:
> On Fri, 7 Apr 2006, Mars G. Miro wrote:
>
> MGM> Greetz!
> MGM>
> MGM>  I have an HP DL145 that I'm having problems with when
connecting via
> MGM> serial console. I think it's acpi-related. This is on
6.1-BETA4/amd64
> MGM> (5.X is the same also)
>
> [snip]
>
> It seems it's DL145 G2. We use three of them and did not see your
problem.
Yes it's a G2. Sorry i ommitted that information the first time.
> However, *sometimes* serial consoles work only for input (I can login and
> check new processes presence on ttyd0, but can not see any messages.
Trouble
> is
> that this situation is not easy reproducible, and stty state seems to be
the
> same.
>
Does the box seem to hang when you do this? e.g., when you do not see
any messages.
> What is you stop getty on ttyd0 and try to run two tip's?
>
I'm not sure I get you, sorry ;-( Can you elaborate further?

Thanks.

> Sincerely,
> D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
> ------------------------------------------------------------------------
> *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
> ------------------------------------------------------------------------
>

On Sun, 9 Apr 2006, Mars G. Miro wrote:

MGM> > MGM>  I have an HP DL145 that I'm having problems with when
connecting via
MGM> > MGM> serial console. I think it's acpi-related. This is on
6.1-BETA4/amd64
MGM> > MGM> (5.X is the same also)
MGM> >
MGM> > [snip]
MGM> >
MGM> > It seems it's DL145 G2. We use three of them and did not see
your problem.
MGM> 
MGM> Yes it's a G2. Sorry i ommitted that information the first time.
MGM> 
MGM> > However, *sometimes* serial consoles work only for input (I can
login and
MGM> > check new processes presence on ttyd0, but can not see any
messages. Trouble
MGM> > is
MGM> > that this situation is not easy reproducible, and stty state seems
to be the
MGM> > same.
MGM> >
MGM> 
MGM> Does the box seem to hang when you do this? e.g., when you do not see
MGM> any messages.

Nope. The box is working properly: I checked it by logging via ssh and digging 
throoup list of processes and their states; the only data which can not get 
throudh is serial from G2 to serial console. I can (blindly) login, type `sleep 
50' and see sleep process from ssh connection. After logout, getty
_sometimes_
returns sio0 to the proper state, so 'login:' is visible on the other
side.

What is also interesting, that the box is _never_ in this state on 
boot phase or single user sh: only after getty/login, and not every time.

MGM> > What is you stop getty on ttyd0 and try to run two tip's?
MGM> >
MGM> 
MGM> I'm not sure I get you, sorry ;-( Can you elaborate further?

s/is/if/ of course. Try to disable getty in /etc/ttys, and start 
tip -9600 ttyd0 on G2 side - can you communicate with the other side?



Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
------------------------------------------------------------------------
*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
------------------------------------------------------------------------

Mars G. Miro wrote:
>
>> However, *sometimes* serial consoles work only for input (I can login
and
>> check new processes presence on ttyd0, but can not see any messages.
Trouble
>> is
>> that this situation is not easy reproducible, and stty state seems to
be the
>> same.
>>
>>     
This is a bug in the HP BMC that HP blames on FreeBSD.  The only way to 
work around it, is to have a custom getty that doesn't reset the port 
everytime you open it.