Ubuntu :: Serial 18250 Too Much Work For Irq19?
Jul 12, 2010
I installed ubuntu on a relative's computer but on the last moment, before the "restarting now" the screen began to spam this message. After this everytime the system logs on after 3~10 seconds the graphic interface freezes, so i entered the TTY1 before that, but again the message "serial8250 too much work for irq19" began to spam and obviously this is the cause of the problem
info:
pentium dual core
2GB ram
HDD 300GB
ubuntu 10.04 32-bits
what is thiis and how to fix it??
View 4 Replies
ADVERTISEMENT
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.
View 1 Replies
View Related
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.
View 2 Replies
View Related
May 2, 2010
I tried my COM mouse KM-203S on Windows, it works out of the box. Now i want to make it work on linux. But the problem is that mdetect doesn't recognize it, and whatever protocol i select in inputattach, the cursor jumps unpredictably when i move the mouse. How can i get the parameters for this mouse - maybe baudrate, etc.? Or maybe i'm doing something totally wrong?Here's mdetect output (i moved the mouse while mdetect was working) on 300 8N1 mode (set by minicom):
Code:
Found the following devices:
/dev/ttyS1
[code]...
View 1 Replies
View Related
Aug 24, 2010
I had a web server running from a Windows 7 computer and recently moved everything to an Ubuntu server. All is set up and running smoothly. I do have one page that actually interfaces with the serial port. The only thing I do with it is to set the DTR pin to "true" which applies +12v to the pin. This activates a relay. It is very basic and simple. After moving everything to Linux, this page will no longer work. I knew this would happen. I know the page had code in it to call out "Com1" which would change to "ttyS0". It also had "set_serDTR(True);" in the code. I can't figure out how to get PHP to control the DTR pin on a Linux serial port.
View 10 Replies
View Related
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 ?
View 3 Replies
View Related
Jan 16, 2010
Label on card: "I-440 PCI 4S1P IO Card"
Code:
# lspci -v
...
[code].....
View 3 Replies
View Related
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]....
View 3 Replies
View Related
Jul 30, 2009
I was using V9 and upgrade to V10 and now my logins in my inittab do not work. I realize that is file structure is outdated so I made individual run files for each of my serial devices under event.d ( such as TX0000 - rc....etc) - all this works but i need to manual type initctl start TX000o to get logon for my serial devices. I would so much like them to automatically start on bootup.
View 3 Replies
View Related
Jun 21, 2011
I have a bit of a dilemma. I'm attempting to use a microcontroller to send MIDI messages over a virtual serial port. I want to (eventually) read them with Mixxx. I'm using an FTDI chip, so I get a /dev/ttyUSB0. I've tried spikenzielabs' Serial-Midi program, but it doesn't see any serial ports. NOTEMIDI looks really old and won't compile on my 10.04 LTS machine.
View 2 Replies
View Related
Mar 3, 2011
I need to do some serial comms work and need an equivalent to hyper terminal on Debian. Does it exist?
View 3 Replies
View Related
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.
View 3 Replies
View Related
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]....
View 17 Replies
View Related
Mar 23, 2010
We have a new machine with RedHat enterprise 5 on it. I need to connect a serial cable to the serial port and talk to another system (old alpha system) instead of using a VT connected to the alpha.Does RedHat come with anything like Keaterm/hyperterm/etc etc?
View 3 Replies
View Related
May 11, 2011
I am designing a program called "Microcom", a VERY tiny terminal "emulator" (more like a serial console). I am making it specifically to work with uClibc to use as a serial console for my floppy disk distro.
Problem is, it works fine receiving data but it does not send any data.
I am stumped at why it does not send data!
Code:
View 4 Replies
View Related
Jan 1, 2010
I am trying to get the ti_usb_3410_5052.ko driver installed but it gives a an error saying that "cannot locate the usb-serial.h file." Kindly let me know how to over come this problem. I saw in this forum about a patch but it is not working.
View 2 Replies
View Related
Jun 20, 2010
I am trying to pxe boot ubuntu 10.04.When it boot up,it doesn't show up login prompt from serial console ttyS0, Why ttyS0.conf job isn't invoked automatically ? is there anything wrong with configuration?
View 1 Replies
View Related
Nov 4, 2010
I am able to use USB in serial mode for reading using
cu,
screen,
minicom,
jpnevulator,
[Code]....
View 1 Replies
View Related
Jan 7, 2011
i got this old UPS from compaq long back and installed it with a new battery. Thing is i need to connect it to my PC using this serial cable. But my mobo doest have 1. So i bought a COM port cable converter to serial and have attached the UPS through it.
Now after all this done, my PC wont detect any UPS.. i dont know whether its detecting it or not...
here is the output of dmesg|grep tty
Code:
stoned_420@stoners ~ $ dmesg|grep tty
[ 0.000000] console [tty0] enabled
[ 0.852459] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.852698] 00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
So is my UPS being detected :-/ If not how can i know?
Am attaching pics of what all i have.. save my UPS from draining off when i'm not at home and theres a power failure
View 6 Replies
View Related
Apr 3, 2011
I'm having ongoing problems with my Ubuntu installation(s) almost to the point that each addition causes new problems. The latest, continual problem is periodically the computer is being used and abruptly hangs with a blank screen. Though I believe the error is associated with my having an undefined ServerName for LAMP development server. I've decided to do a fresh install with all the options included and see what happens. I need some assistance in developing an install CD/DVD which has all the packages (and configurations) that I need. I want to be able to use a serial mouse (the computer is an older one and I only have a serial mouse to use).
View 1 Replies
View Related
Apr 27, 2011
ive been looking through several online documents and forum posts but i cant get a clearcut answer on how to set up serial port acces in ubuntu 10.04 (server).
View 7 Replies
View Related
Jun 1, 2011
I bought a USB Adapter (Trendnet TU-S9) so that I could connect a old camera that connects via a serial port to my newer pc that has no serial port. The problem is that the adapter,to my surprise,requires drivers or some software to work.Windows, of course, and Mac drivers came with it on a disc but.... nothing for Linux. I am running Ubuntu 11.04.
View 1 Replies
View Related
Jun 3, 2011
I want to get a serial mouse (PS/2 with adapter) to work on a Dell C400 (so I can use the one USB port for wireless). I enabled the serial port in the BIOS, but the mouse didn't work.
View 1 Replies
View Related
Jun 20, 2010
I am trying to pxe boot ubuntu 10.04
grub config:
Code:
title Linux NFS
dhcp
root (nd)
kernel /vmlinuz-2.6.34 console=ttyS0,9600 root=/dev/nfs nfsroot=192.168.1.1:/home/nfsroot ip=dhcp rw
initrd /initrd.img-2.6.34-pxenfs
[Code]....
Why ttyS0.conf job isn't invoked automatically ? is there anything wrong with configuration?
View 3 Replies
View Related
Jan 16, 2010
I'm writing a point-of-sale application in Perl/Tk, to run on Ubuntu. For cashier accounts, I plan to just use normal Linux accounts. Cashier login will be done by scanning a badge with a barcode ID on it. Our barcode scanners are older serial-port types. Thus, I'd like to login to the X (Gnome) desktop, yet read the username (and password) via a serial port such as /dev/ttyS0.
View 3 Replies
View Related
Mar 2, 2010
I am using screen for serial terminal, but it seems to be lacking in that there is no scrollback. Is there any way to configure scrollback in screen or is there another terminal emulator that is full-featured and allows scrollback?
View 1 Replies
View Related
May 21, 2010
I am wanting to set-up serial communications between my server (ubuntu 9.04) and a picaxe chip (a pic with a bootloader) I need to send data in the format of "1,1,1" or "1,1,0" at 9600 baud 8 data bits, no parity, 1 stop bit and no flow control. the data must be sent as numbers not ASCII I have tried
Code:
echo 1,1,0 > /dev/ttyS0
Any simple shell script or even python.
View 8 Replies
View Related
May 23, 2010
I am using a F232 USB to serial adapter for connecting my wireless modem to my laptop and I wrote a simple C code for reading data received by the modem transmitted by another modem installed on my target device.The problem is my code is simply giving 0.00000 (float data) output .When I use the same code with my desktop its running fine and I am getting relevant data.What may be the problem? I even changed the permission for my /dev/ttyUSB0 I am using Ubuntu 10.04 on both my laptop and desktop
below is my code
Code:
#include <stdlib.h>
#include <math.h>
#include <errno.h> /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */
[code]....
View 5 Replies
View Related
Nov 29, 2010
I've made a LED gadget, which can light up LED patterns. It connects to serial port with RS232 protocol and receives messages which contain desired patterns. My friend wrote a python program which generates patterns and writes them to terminal. Everything is fine this far. I've made a bash script to run this program:
#!/bin/bash
python gen.py
and set it to autostart with:
chmod 755 scr.sh
mv scr.sh /etc/init.d/scr.sh
sudo update-rc.d scr.sh defaults
What I don't understand is - how do I redirect it's output to ttyS0 so that my device could catch generated data?
I've heard that in Linux every data stream can be redirected anywhere with '>>' in bash script. How do I do that? Can I, dunno, write something like this: python gen.py >> ttyS0 in shell script?
View 1 Replies
View Related
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
View 1 Replies
View Related
