I have added /dev/ttyS4 using mknod command on Ubuntu 8.04 Server.
mknod /dev/ttyS4 c 4 68
chown root.dialout /dev/ttyS4
chmod 600 /dev/ttyS4
when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
device or address
Am i missing something
Thanks,
Kaushal
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11-04-2009, 11:36 AM
Kaushal Shriyan
minicom
Hi,
I have added /dev/ttyS4 using mknod command on Ubuntu 8.04 Server.
mknod /dev/ttyS4 c 4 68
chown root.dialout /dev/ttyS4
chmod 600 /dev/ttyS4
when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
device or address
Am i missing something
Thanks,
Kaushal
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11-04-2009, 11:51 AM
Soren Hansen
minicom
On Wed, Nov 04, 2009 at 06:06:53PM +0530, Kaushal Shriyan wrote:
> I have added /dev/ttyS4 using mknod command on Ubuntu 8.04 Server.
> mknod /dev/ttyS4 c 4 68
> chown root.dialout /dev/ttyS4
> chmod 600 /dev/ttyS4
>
> when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
> device or address
>
> Am i missing something
Do you actually have 5 COM ports?
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11-04-2009, 11:52 AM
Kaushal Shriyan
minicom
On Wed, Nov 4, 2009 at 6:13 PM, Jim Tarvid <tarvid@ls.net> wrote:
> You should not have to create the dev node.
>
> Try
>
> root@venus:~# dmesg | grep ttyS
> [*** 1.828371] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> [*** 1.828649] 00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
>
> and use that device.
Hi Jim
when i do # dmesg | grep ttyS
[ 32.371106] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 32.372030] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 32.372465] 0000:00:09.0: ttyS1 at I/O 0xd400 (irq = 16) is a XScale
[ 32.372734] 0000:00:09.0: ttyS2 at I/O 0xd800 (irq = 16) is a XScale
[ 32.373011] 0000:00:0a.0: ttyS3 at I/O 0xdc00 (irq = 17) is a XScale
#
so i cannot use /dev/ttyS4 ? Am i understanding it correctly ?
Thanks,
Kaushal
> On Wed, Nov 4, 2009 at 7:36 AM, Kaushal Shriyan <kaushalshriyan@gmail.com>
> wrote:
>>
>> Hi,
>>
>> I have added /dev/ttyS4 using mknod command on Ubuntu 8.04 Server.
>> mknod /dev/ttyS4 c 4 68
>> chown root.dialout */dev/ttyS4
>> chmod 600 /dev/ttyS4
>>
>> when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
>> device or address
>>
>> Am i missing something
>>
>> Thanks,
>>
>> Kaushal
>>
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>> More info: https://wiki.ubuntu.com/ServerTeam
>
>
>
> --
> In Peace and Love
> the down and to the left Reverend Jim Tarvid, PCA
> http://ls.net
> http://drupal.ls.net
> Latitude: 36.5831° Longitude: -81.0940°
> Ubi caritas et amor Deus ibi est
> Abajo Y A La Izquierda Esta El Corazon
>
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11-04-2009, 11:53 AM
Kaushal Shriyan
minicom
On Wed, Nov 4, 2009 at 6:21 PM, Soren Hansen <soren@ubuntu.com> wrote:
> On Wed, Nov 04, 2009 at 06:06:53PM +0530, Kaushal Shriyan wrote:
>> I have added /dev/ttyS4 using mknod command on Ubuntu 8.04 Server.
>> mknod /dev/ttyS4 c 4 68
>> chown root.dialout */dev/ttyS4
>> chmod 600 /dev/ttyS4
>>
>> when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
>> device or address
>>
>> Am i missing something
>
> Do you actually have 5 COM ports?
>
I have 4 PCI Serial COM Ports and one onboard serial port
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11-04-2009, 12:00 PM
Karl Auer
minicom
On Wed, 2009-11-04 at 18:06 +0530, Kaushal Shriyan wrote:
> when i run minicom i get minicom: cannot open /dev/ttyS4 : No such
> device or address
I hesitate to ask but - is there actually a serial port at that device
number (4, 68)?
My laptop has *no* serial ports, but it still has ttyS0,1,2,3 and I
think it still has the onboard hardware, even though there is no
external port. If I do what you did, I get the same error message.
What are you actually trying to do? Why do you want ttyS4?
> the down and to the left Reverend Jim Tarvid, PCA
> http://ls.net
> http://drupal.ls.net
> Latitude: 36.5831° Longitude: -81.0940°
> Ubi caritas et amor Deus ibi est
> Abajo Y A La Izquierda Esta El Corazon
>
--
In Peace and Love
the down and to the left Reverend Jim Tarvid, PCA
http://ls.net
http://drupal.ls.net
Latitude: 36.5831° Longitude: -81.0940°
Ubi caritas et amor Deus ibi est
Abajo Y A La Izquierda Esta El Corazon
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