CentOS 5 :: Cannot Open Putty With USB To Serial Adapter
Aug 4, 2010
Im a very basic Linux/ Centos user. I have Putty installed and a USB to serial adapter. All settings seem to be right as far as speed, etc, but I'm not sure how to list the device to open for the program. The default location it gives is "/dev/ttyS0" Trying to find where the USB is located using the "/sbin/lsusb" command gives me-
Bus 001 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 004 Device 002: ID 0557:2008 ATEN International Co., Ltd UC-232A Serial Port [pl2303]
Bus 004 Device 001: ID 0000:0000
So I think this means that it is on bus 4 correct? So how do I list this for putty to open the device.
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Jan 13, 2010
I am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5).I have /sbin/agetty -L 9600 ttyS0
in /etc/inittab. I am using a generic USB to serial adaptor on Windows (Unitek) and a null modem cable. I have putty configured for 9600 baud, 8 bits, no parity, one stop bit, no flow control.I get the login prompt from agetty in the putty window but input does not work; I see weird characters in the putty screen. I can echo output into the device from windows and see it, but
cat < /dev/ttyS0. just prints out weird characters from what I type.
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Oct 9, 2015
I am hoping to be able to get an old serial-touchscreen to work with a usb/serial adapter. I had this touchscreen working some years ago on different hardware. I would like to hook it to the machine I am setting up as a multimedia host with mythtv among other things.
Following the instructions I left behind when I got this to work way back when does not work. See [URL] ....
This info is a work around to get the xserver to see the touchscreen. [URL] ....
I do know that the touchscreen works as I am able to get garbage on the screen as in the first part of my howto. But I have not had any success getting xorg to see it. I wish I had posted a copy of the xorg.conf at the time, but......
There is an issue with the current xserver in testing that I am hoping the next update (in unstable) will fix when it gets pushed to testing. That is that Code: Select all# X -configure fails with a segfault. So I am not able to generate the xorg.conf needed to get it to work. I was going to post a bugreport, that is when I found out there is an update in unstable, so I am waiting for it to get pushed at the moment.
Anyway I am hoping that I can link /dev/ttyUSB0 to /dev/tty0 and get it to work. I would like some kind of guess as to my chances of success before I go to all the work of getting the monitor hooked to the host.
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May 21, 2009
I am running kubuntu 9.04. I have minicom, Gtkterm and Putty installed. minicom seems to be really good, but I am missing scroll back functionality on there. Either that or I'm a novice with it and don't know how to do it. Putty is a GREAT app. But what I'm finding is that after the terminal runs for a bit, the screen shows characters from the previous lines and goofs up the output. If I move the window, the gibirish disappears. gtkterm is adding several empty lines to any of the screen output.
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Feb 21, 2009
On my CentOS 5.2 install I've installed a dual-port serial card based on the NetMOS 9835 chipset. I've followed the serial instructions, but everything they tell me to do is already done - see setserial outputs below. I've compared these values to the lspci output (below, NetMos card is at the bottom of the output) for the card and it appears right. Problem being, I can't use the serial ports. Oh and I did use search, and looked at every 9835-related article before posting this :)
[Code]....
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May 29, 2010
i need a usb to rs-232 converter to get into the console port i have an aten uc-232a converter and i have downloaded a .gz file called uplcom.4freebsd.gz i have unpacked it but i do not know what to do from here could some one please help i need to do some practice for the external icnd 2 exam and i have left it to the last minute as per usual.
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Apr 14, 2009
I need a to add a usb serial port adapter. Are they all basically the same? Do I need to find a Linux compatibility list before I go shopping?
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Mar 8, 2011
I am using a Sealink PN 2202 USB serial adapter on a linux box (Ubuntu 10.4) running kernel 2.6.32-28-generic. I have written a perl script to simply log the incoming RS232 data (9600 8N2) and it works fine when I start it from a bash shell:
perl /home/pk/PerlCode/RS232_D4_v11.pl
However, I need the computer to boot and start logging after a POR. If I try to use Startup Manager to execute my script everything seems ok but I randomly loose about 20% of the incoming RS232 data. In Startup Manager I use the command
gnome-terminal --title="D4 RS232 Log" --execute bash -c "perl
/home/pk/PerlCode/RS232_D4_v11.pl"
If I close the automatically-started script and restart it from a bash shell, I again will randomly loose about 20% of the incoming RS232 data. It almost seems like I have screwed up the driver by using the Startup Manager. The only way I can get reliable logging again is to remove the script from Startup Manager, then restart the computer and manually launch the perl script. I was thinking that maybe the order in which the driver was loaded and perl script started might be an issue. So I tried a bash script that sleeps for 15seconds, then starts the perl script. Again, I loose random pieces of incoming data when this is initiated by Startup Manager.
Here is some more info:
lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 0c52:2223 Sealevel Systems, Inc.
Bus 002 Device 003: ID 0c52:2213 Sealevel Systems, Inc.
Bus 002 Device 002: ID 03eb:3301 Atmel Corp. at43301 4-Port Hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub .....
sudo cat /proc/tty/driver/usbserial
usbserinfo:1.0 driver:2.0
0: module:ftdi_sio name:"FTDI USB Serial Device" vendor:0c52
product:2213 num_ports:1 port:1 path:usb-0000:00:1d.0-2.1
1: module:ftdi_sio name:"FTDI USB Serial Device" vendor:0c52
product:2223 num_ports:1 port:1 path:usb-0000:00:1d.0-2.2
ls -al /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 2011-03-08 09:56 /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 1 2011-03-08 09:56 /dev/ttyUSB1
I am a member of the group dialout.
I though it may have something to do with su vs my ownership of files. If I do a sudo chmod 777 /dev/ttyUSB* then
ls -al /dev/ttyUSB*
crwxrwxrwx 1 root dialout 188, 0 2011-03-08 09:56 /dev/ttyUSB0
crwxrwxrwx 1 root dialout 188, 1 2011-03-08 09:56 /dev/ttyUSB1
However, after rebooting it reverts to
ls -al /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 2011-03-08 09:56 /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 1 2011-03-08 09:56 /dev/ttyUSB1
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Dec 16, 2010
I picked up as Dynex usb2serial converter to use with my cisco router/switch. The dongle works fine if plugged into a windows box & puTTy, but I cannot get it to work with Fedora 14. When I try to use cute, mini or command line it tells me it cannot open the connection. Here is the output from lsusb and dmesg. susb output:
[code]....
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Jul 21, 2010
I have a usb serial adapter and was happily using minicom with it under openSUSE 11.2. I've upgraded to openSUSE 11.3 and I can only use minicom with this serial adapter as root. I had previously had problems writing to /var/lock under openSUSE 11.2 which I worked around by changing the minicom config to use /tmp as its lock file location.
Unfortunately my laptop doesn't have a built in serial port so I can't tell if its a general problem or something specific to the /dev/ttyUSB0 device. This is the output I get when I run minicom with my regular user account. I get the same output whether the lock file location is set to /tmp or /var/lock
Code:minicom usb0 Device /dev/ttyUSB0 lock failed: Permission denied. Before I started tinkering my user belonged to the following groups groups=16(dialout),33(video),100(users) I've since added 5(tty),14(uucp),21(console) but still no joy.
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Feb 4, 2010
Does an have Mocship MCS9901 adapter in use. I cannot even install driver. Is ti the PC adapter between since this is express card. What to do?.
make[1]: *** [_module_/home/Xx_Xxx/Desktop/MCS9901_Linux/version1.6/starex] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.31.12-174.2.3.fc12.i686'
make: *** [default] Error 2
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Jul 13, 2015
I tried connecting my Debian laptop to a vintage Apple //e using a Super Serial Card on the Apple side and a USB to serial adapter on the laptop side. It kind of works -- I can send data over to the Apple using e.g. echo "foobar" > /dev/ttyUSB0 or via minicom --, but every 20 seconds (quite exactly!) some 4 random characters appear on the Apple's screen (mostly tildes, sometimes a pipe). This does *not* happen when booting the laptop into Debian rescue mode; so I guess it must be some (daemon?) process messing around with the usb serial device in regular intervals.
I tried to disable quite some services, but the problem remains.I don't have any clue how I might catch the evil-doer in the act -- virtually all serial monitors I've so far read about allow only monitoring the interaction of a known program/process with a serial port. But in this case I first have to actually find out which process is talking to the serial port in the first place.
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Oct 1, 2010
I am using a Prolific pl2303 USB<=>Serial adapter. dmesg reports everything seems ok when I plug it in (see below) but when I open the ttyUSB0 port in minicom, it is always offline and nothing works. Also, minicom reports:
[code]....
If I plug the adapter into a different machine (Windows) everything works fine. The serial port is setup correctly (9600-8-N-1) What can I do to get this working?
usb 5-2: new full speed USB device using uhci_hcd and address 3
usb 5-2: configuration #1 chosen from 1 choice
pl2303 5-2:1.0: pl2303 converter detected
usb 5-2: pl2303 converter now attached to ttyUSB0
usb 5-2: New USB device found, idVendor=067b, idProduct=2303
[Code]....
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Apr 14, 2010
I am downloading a big file on linux VPS, and I am connecting remotely via Putty to do it? Once I initiated the wget command to download the file, if I close the putty window, will wget continue to download the file in the background even though the session is technically closed?
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Sep 7, 2009
run a xwindows GUI through putty?
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Nov 30, 2010
I just installed the CentOs 5.5 on my laptop (windows7 + vmware workstation 7), I used host only, the centos could connect only with my laptop. After installation , I 'd like to admin CentOs by putty or ssh client, so I configured the sshd_config. I configured the file like this:
UsePAM no
UseDNS no
PasswordAuthentication yes
but I could not log in successfully , the connection was refused all the time. I can ping the Centos from my windows7; I can telnet ip 22 , the Openssh could appear; the /var/log/security looks no problem ; but I just couldn't log in the system. How can I do?
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May 15, 2010
I am trying to setup a putty session to putty from one Ubuntu machine to another. I know how to setup to connect to the machine from Windows and I am using the same settings for the one I am trying on the Ubuntu machine but it fails to connect. It fails immediately so I believe that putty is not able to find ssh. Is there some configuring that I need to do.
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Sep 1, 2010
I'm using C serial in a program to open and use a serial port but the port won't open for one reason or another. The program successfully runs on a different computer and when using RealTerm: Serial Capture Program, I can connect through the serial port with the same settings as I'm attempting through my c code. Anyone have any idea why it might be failing? I know this is still pretty vague, so let me know if there's other things I can tell you that might help to finding a solution
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Aug 8, 2009
I use centro 5 to run a game server with the command ./srcds_run quit -game cstrike -nocrashdialog +map de_dust2 +maxplayers 36 +ip 95.154.192.34 +port 27015 -tickrate 67
which then starts a 36 slot CSS game server but as soon as i close putty it ends now i tried nohub ./srcds_run quit -game cstrike -nocrashdialog +map de_dust2 +maxplayers 36 +ip 95.154.192.34 +port 27015 -tickrate 67 and ./srcds_run quit -game cstrike -nocrashdialog +map de_dust2 +maxplayers 36 +ip 95.154.192.34 +port 27015 -tickrate 67 > srcds.log 2>&1 &
i'm woundering if it something to do with centro 5 why nohub isn't working becouse it works for others either
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Mar 15, 2010
Not really sure where to post this, so here goes... I installed apache2, php and MySQL via LAMP and everything seems to work fine but when I try to open the COM1 port to do serial communication via PHP, I get a permission denied error.
'mode com1: BAUD=9600 PARITY=N data=8 stop=1 xon=off';
$fp=fopen("COM1:","w+");
I've also tried using /dev/ttyS0 instead of COM1: but no luck. Anyone out there know what I'm doing wrong? I don't know if I need to set something up in apache2 or php or if the code is just wrong. I'm on an Acer Aspire One with Ubuntu's LNR 9.10.
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Jan 21, 2011
As far as I can tell from browsing around, I should be getting 256 colors in my Emacs, but I'm not. I'm running CentOS 5.4 on an ec2 instance. I'm running Putty 0.60 on Windows 7. Putty is set to send xterm-256color for its terminal string. Putty is set to allow 256 colors. On CentOS, my $TERM is set to xterm-256color.
tput colors shows 256. I recompiled Emacs to 23.2, making sure to install libtermcap-devel beforehand, because someone claimed they needed that. But still, when I M-x list-colors-display in Emacs, it only shows 8 colors.
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Jun 25, 2010
I am using CentOs 5.5.
I use Putty to ssh from my windows laptop to a remote CentOS machine. Is there a way to start a shell that doesnt dies when I disconnect so I can connect again and reclaim it?
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Aug 22, 2010
Anyone know how to send output to buffer via putty? Currently I am using vim with windows copy menu, very slow and tedious.
I download xclip but i got the following error:
Quote:cat ../mnt/fs1/tmp/rcentre01.log|xclip
Error: Can't open display: (null)
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Apr 27, 2009
The /dev directory on my system shows the following entries:
/dev/tty
/dev/tty0
/dev/tty1
[code]....
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Jan 16, 2010
I would like to be able to ssh to a TCP port on my server and be directly connected to the serial port @ 115200 Null modem config. Does any body know how one can do this?
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Apr 16, 2009
I configured the serial consol on centos5 as follows
# dmesg |grep tty
Kernel command line: ro root=/dev/VolGroup00/LogVol00 console=tty0 console=ttyS0,9600n8
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A[code]......
But I could not consol Centos server from my labtop (win xp) Is there missing or wrong configurations ?
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Oct 29, 2009
how do i get the volume serial number using the API on CentOS?for example, on Microsoft Windows i use this function(API - Kernel32.dll):
BOOL GetVolumeInformation One of function's parameter is a pointer to a variable that receive the volume serial number;
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Jan 20, 2009
on my server (fax server)with Cento O.S 5.2 final kernel 2.6.18-92.el5 the external serial modem 56k us robotic is not recognized.Kudzu not notes the modem.PS .On the same server ,same modem ,same serial but with Centos 4.5 ,this as regular detect.
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May 7, 2009
I am attempting to use a serial trackball in CentOS 5.3 and have run out of ideas. The mouse is connected to COM2 (/dev/ttyS1). I have tried to configure it through xorg.conf using every protocol I could find including "auto" and tried the same again using "inputattach". The mouse communicates at 1200 baud, so I've tried using stty to set the port to that baud rate and still no luck. Is there a test tool that can be used to see if the serial connection is functioning? If not, are there any other ideas?
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May 18, 2010
I add one serical card which is extended to 4 serial ports to my host, but in centos 5.4, only 3 (In my machine, is ttyS1, ttyS2 and ttyS3,ttyS0 is another serial port) of my host can be used, and /dev/ttyS4 doesn't work.
$ sudo cat /dev/ttyS4
cat: /dev/ttyS4: No such device or address
The card info is as follows:
Host> lspci -vvv
03:01.0 Serial controller: Oxford Semiconductor Ltd OX16PCI954 (Quad 16950 UART) function 0 (Uart) (prog-if 06 [16950])
Subsystem: AFAVLAB Technology Inc Unknown device 2150
[code]....
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