Re: serial8250 and 537 Intel modems (symptom ttyS1 to ttyS3 as 16450 and 8250 chips)

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Philippe Vouters wrote:
> Ryan, Tapan,
>
> Can you try to add the string "console=tty0" to your kernel boot
> options in your /boot/grub/grub.conf ?
> Your grub.conf ought to look like (adjust for your kernel):
>
> #boot=/dev/hdd
> timeout=5
> splashimage=(hd0,1)/grub/splash.xpm.gz
> hiddenmenu
> default=0
> title Fedora (2.6.27.24-170.2.68.fc10.i686)
>         root (hd0,1)
>         kernel /vmlinuz-2.6.27.24-170.2.68.fc10.i686 ro
> root=UUID=96fecf54-e120-455c-89ab-e532bcbba29f rhgb quiet
>         initrd /initrd-2.6.27.24-170.2.68.fc10.i686.img
> title Fedora (2.6.27.21-170.2.56.fc10.i686)
>         root (hd0,1)
>         kernel /vmlinuz-2.6.27.21-170.2.56.fc10.i686 ro
> root=UUID=96fecf54-e120-455c-89ab-e532bcbba29f rhgb quiet
>         initrd /initrd-2.6.27.21-170.2.56.fc10.i686.img
> title Fedora (2.6.27.19-170.2.35.fc10.i686)
>         root (hd0,1)
>         kernel /vmlinuz-2.6.27.19-170.2.35.fc10.i686 ro
> root=UUID=96fecf54-e120-455c-89ab-e532bcbba29f rhgb quiet *console=tty0*
>         initrd /initrd-2.6.27.19-170.2.35.fc10.i686.img
>
> Please reply to me whether this cures the problem with your 537 modem
> board ? If I refer to my /var/log/messages when I booted
> 2.6.27.19-170.2.35.fc10.i686 this ought to. I did not get any longer
> any ttySx device.
> -  
> http://vouters.dyndns.org:8080/
> Philippe Vouters (Fontainebleau/France)
>         
>
>
>
> Le jeudi 18 juin 2009 à 19:58 +0200, Philippe Vouters a écrit :
>> >From http://www.mjmwired.net/kernel/Documentation/kernel-parameters.txt
>>
>> 519		console=	[KNL] Output console device and options.
>> 520	
>> 521			tty<n>	Use the virtual console device <n>.
>> 522	
>> 523			ttyS<n>[,options]
>> 524			ttyUSB0[,options]
>> 525				Use the specified serial port.  The options are of
>> 526				the form "bbbbpnf", where "bbbb" is the baud rate,
>> 527				"p" is parity ("n", "o", or "e"), "n" is number of
>> 528				bits, and "f" is flow control ("r" for RTS or
>> 529				omit it).  Default is "9600n8".
>> 530	
>> 531				See Documentation/serial-console.txt for more
>> 532				information.  See
>> 533				Documentation/networking/netconsole.txt for an
>> 534				alternative.
>> 535	
>> 536			uart[8250],io,<addr>[,options]
>> 537			uart[8250],mmio,<addr>[,options]
>> 538				Start an early, polled-mode console on the 8250/16550
>> 539				UART at the specified I/O port or MMIO address,
>> 540				switching to the matching ttyS device later.  The
>> 541				options are the same as for ttyS, above.
>> 542	
>> 543	                If the device connected to the port is not a TTY but a braille
>> 544	                device, prepend "brl," before the device type, for instance
>> 545				console=brl,ttyS0
>> 546			For now, only VisioBraille is supported.
>> 547	
>>
>> -  
>> http://vouters.dyndns.org:8080/
>> Philippe Vouters (Fontainebleau/France)
>>
>>     
Dear Philippe,

Sorry to disappoint you but this method also did not solve the problem.

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