missing /dev/tty0

missing /dev/tty0

[Louis Lai]

Hi all,

I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
start up properly but the tty0 doesn't exist under /dev. I have already
enable the virtual console during kernel configuration. is it something
configure not properly for the kernel?? Anyone can help??

Thanks in advance,
Louis

missing /dev/tty0

[Louis Lai]

Hi all,

I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
start up properly but the tty0 doesn't exist under /dev. I have already
enable the virtual console during kernel configuration. is it something
configure not properly for the kernel?? Anyone can help??

Thanks in advance,
Louis

Re: missing /dev/tty0

[Yoann Allain]

Louis Lai a écrit :

>Hi all,
>
>I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
>start up properly but the tty0 doesn't exist under /dev. I have already
>enable the virtual console during kernel configuration. is it something
>configure not properly for the kernel?? Anyone can help??
>
>Thanks in advance,
>Louis
>
>  
>
Hi Louis,

The problem is that you didn't create the special file /dev/tty0. Create 
it with the mknod command :
# mknod /dev/tty0 c 4 0
Then put the good rights, for example:
# chmod 640 /dev/tty0
That should do it...

    Yoann

RE: missing /dev/tty0

[Louis Lai]

Hi Yoann,

Thanks for your reply!!
i can create the device file but i still not able to open it.
When i open /dev/tty0, i got "No such device".
Any ideas??

Thanks again,
Louis

-----Original Message-----
From: Yoann Allain [mailto:yallain@avilinks.com]
Sent: Friday, October 28, 2005 6:27 PM
To: Louis Lai
Cc: linuxconsole-dev@lists.sourceforge.net; linux-mips@linux-mips.org
Subject: Re: missing /dev/tty0


Louis Lai a écrit :

>Hi all,
>
>I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
>start up properly but the tty0 doesn't exist under /dev. I have already
>enable the virtual console during kernel configuration. is it something
>configure not properly for the kernel?? Anyone can help??
>
>Thanks in advance,
>Louis
>
>
>
Hi Louis,

The problem is that you didn't create the special file /dev/tty0. Create
it with the mknod command :
# mknod /dev/tty0 c 4 0
Then put the good rights, for example:
# chmod 640 /dev/tty0
That should do it...

    Yoann

RE: missing /dev/tty0

[Louis Lai]

Hi Yoann,

Thanks for your reply!!
i can create the device file but i still not able to open it.
When i open /dev/tty0, i got "No such device".
Any ideas??

Thanks again,
Louis

-----Original Message-----
From: Yoann Allain [mailto:yallain@avilinks.com]
Sent: Friday, October 28, 2005 6:27 PM
To: Louis Lai
Cc: linuxconsole-dev@lists.sourceforge.net; linux-mips@linux-mips.org
Subject: Re: missing /dev/tty0


Louis Lai a écrit :

>Hi all,
>
>I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
>start up properly but the tty0 doesn't exist under /dev. I have already
>enable the virtual console during kernel configuration. is it something
>configure not properly for the kernel?? Anyone can help??
>
>Thanks in advance,
>Louis
>
>
>
Hi Louis,

The problem is that you didn't create the special file /dev/tty0. Create
it with the mknod command :
# mknod /dev/tty0 c 4 0
Then put the good rights, for example:
# chmod 640 /dev/tty0
That should do it...

    Yoann

Re: missing /dev/tty0

[Yoann Allain]

You should something like that at the output of
$ ls -l /dev/tty?
crw--w----  1 root root 4, 0 2005-03-19 20:36 /dev/tty0
crw-rw----  1 root tty  4, 1 2005-10-24 18:24 /dev/tty1
crw-rw----  1 root tty  4, 2 2005-10-24 18:24 /dev/tty2
...
$

You wrote about  virtual consoles: in this case you should have 
CONFIG_VT=y in .config file.
Or at least you should something like this at the output of 

$ grep CONFIG_SERIAL_CONSOLE /where-your-kernel-sources-are/.config
CONFIG_SERIAL_CONSOLE=y
$

But be aware of:
  "If you don't have a VGA card installed and you say Y here, the
   kernel will automatically use the first serial line, /dev/ttyS0, as
   system console."

This is from HELP command in menuconfig...

I'll hope this will help...

    Yoann



Louis Lai a écrit :

>Hi Yoann,
>
>Thanks for your reply!!
>i can create the device file but i still not able to open it.
>When i open /dev/tty0, i got "No such device".
>Any ideas??
>
>Thanks again,
>Louis
>
>-----Original Message-----
>From: Yoann Allain [mailto:yallain@avilinks.com]
>Sent: Friday, October 28, 2005 6:27 PM
>To: Louis Lai
>Cc: linuxconsole-dev@lists.sourceforge.net; linux-mips@linux-mips.org
>Subject: Re: missing /dev/tty0
>
>
>Louis Lai a écrit :
>
>  
>
>>Hi all,
>>
>>I am using a 2.4.30 kernel for my MIPS embedded processor. The kernel can
>>start up properly but the tty0 doesn't exist under /dev. I have already
>>enable the virtual console during kernel configuration. is it something
>>configure not properly for the kernel?? Anyone can help??
>>
>>Thanks in advance,
>>Louis
>>
>>
>>
>>    
>>
>Hi Louis,
>
>The problem is that you didn't create the special file /dev/tty0. Create
>it with the mknod command :
># mknod /dev/tty0 c 4 0
>Then put the good rights, for example:
># chmod 640 /dev/tty0
>That should do it...
>
>    Yoann
>
>
>
>  
>