Re: Fix staircase effect on Altix serial console.

From: Robin Holt <holt_at_sgi.com>
Date: 2004-03-03 23:46:32
On Wed, Mar 03, 2004 at 11:57:21AM +0100, Andreas Schwab wrote:
> jbarnes@sgi.com (Jesse Barnes) writes:
> 
> > On Tue, Mar 02, 2004 at 06:56:55PM -0800, David Mosberger wrote:
> >> >>>>> On Wed, 03 Mar 2004 00:49:20 +0100, Andreas Schwab <schwab@suse.de> said:
> >> 
> >>   Andreas> Serial console output on Altix didn't convert NL to CRNL.
> >> 
> >> Somebody from SGI will have to review/OK this.
> >
> > Andreas, on which platform and configuration did you see this problem?
> 
> It's on the 8P Altix (can't remember the exact platform name).
> 

Are you seeing the missing carriage return on output at the L1 or
on a terminal connected to the serial port?

> > It appears that depending on your console configuration, the system
> > controller will eat/convert characters.  I'm trying to get it fixed
> > properly there...
> 
> The system controller should not change the output in any way.  It's the
> job of the serial console write function (which is used for printk) to
> transform NL to CRNL, which is what I have implemented here.  Note that
> normal serial output (which goes through the tty layer) does not exhibit
> this problem.
> 
> Andreas.
> 
> -- 
> Andreas Schwab, SuSE Labs, schwab@suse.de
> SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
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> "And now for something completely different."
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Received on Wed Mar 3 07:54:06 2004

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