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Linux Serial Port Input Output Error


Put the other test lead on your tongue. Main Menu LQ Calendar LQ Rules LQ Sitemap Site FAQ View New Posts View Latest Posts Zero Reply Threads LQ Wiki Most Wanted Jeremy's Blog Report LQ Bug Syndicate Latest See section Serial Monitoring/Diagnostics 16.3 (The following subsections are in both the Serial and Modem HOWTOs) 16.4 Serial Port Can't be Found There are 3 possibilities: Your port is disabled since Do you mean socat or scoat? –pdhimal1 Aug 9 '15 at 22:43 It's 'socat' see the manpage for details. my review here

By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. If the wrong IRQ is not corrected by a later display on the screen, then you've got a problem. Touch both leads (at the same time) to one hand to see if they shock you. directory

/dev/ttys0: Tcgetattr: Input/output Error

If two ports have the same IO address then probing it will erroneously indicate only one port. Software today is supposed to automatically remove such bogus lockfiles, but as of 2006 there is still a problem with the "wvdial" dialer program related to lockfiles. You might also get "input overrun" error messages (or find them in logs).

Thank you![reply] Re^3: Supressing error messages on serial port open in Linux by pashanoid (Scribe) on Sep 05, 2011 at 05:52UTC Ooops, now I'm getting this error: Name "Device::SerialPort::carp" used only Posts: 23,066 Blog Entries: 11 Rep: Hi, welcome to LQ, And what does your serial.conf look like? But when you next try to start the second device (without quitting the first device) you get a "... Stty If it shows anything less than a 16550A, this may be your problem.

Another reason may be that whatever is on the serial port (such as a modem, terminal, printer) doesn't work as fast as you thought it did. Tty Input/output Error Only the last character typed may show up. A more accurate error message would be ``Can't use ttyS2 since the setserial data (and kernel data) indicates that another device is using ttyS2's interrupt''. http://www.linuxquestions.org/questions/linux-newbie-8/serial-port-input-output-error-742298/ For PnP run either "pnpdump --dumpregs" (if ISA bus) or run "lspci" (if PCI bus).

What you need to do is to find the interrupt setserial thinks ttyS2 is using. Minicom Use "top" (provided you've set it to display the port number) or "ps -alxw". more hot questions question feed lang-py about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation If you don't have a physical serial port and want to test it you can use scoat to create a virtual serial port.

Tty Input/output Error

Of course, if there is no "lock" directory no lockfile can be created there. couldn't be done because the kernel doesn't support doing it. /dev/ttys0: Tcgetattr: Input/output Error You can look at the hardware info in windows to also find out what IO ports / IRQ the card is using. Cat /dev/ttys0 Input/output Error Why don't we construct a spin 1/4 spinor?

Posts: 23,066 Blog Entries: 11 Rep: Which rpm package in FC owns /etc/serial.conf ? this page Thanks //John Last edited by john_erlandsson; 07-23-2009 at 03:41 PM. kernel-PAE.i686 (had to install this to get ndiswrapper to work) My problem is: I cant get the serial ports working. You can use 'socat -d -d pty,raw,echo=0 pty,raw,echo=0' to create two virtual serial ports. –rfkortekaas Aug 10 '15 at 4:40 worked. Setserial

except the first line, the output is the same. If this seems to fix the "slow" problem then you had an interrupt problem. Code: $ tail -f /var/log/syslog Dec 29 18:20:26 hadrien-SVE14A2C5E kernel: [ 6396.492822] usb 2-1.5: USB disconnect, device number 4 Dec 29 18:23:37 hadrien-SVE14A2C5E kernel: [ 6587.344468] type=1400 audit(1388352217.424:34): apparmor="DENIED" operation="capable" parent=1 http://softacoustik.com/output-error/linux-ssh-input-output-error.php Thank you very much for your help. //John john_erlandsson View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by john_erlandsson Thread Tools Show

In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms See Locating the Serial Port: IO address IRQs and/or What is Setserial 16.18 Overrun errors on serial port This is an overrun of the hardware FIFO buffer and you can't increase Anyway it for some reason disables the use of the /dev/ttyS0 port (COM1).So per tomacat's post in the other thread, I did follow his suggestions, but its still booting up XEN.Here's

Trying to see it would give the same "...

Others have LED lamps which light when certain modem control lines are asserted (turned on). Formerly this was often due to the "serial" module not being loaded. The output of the lspci -vv command should show what i/o,irq the card is configured to use. If one port sends at twice the speed that the other port is set to receive, then every two characters sent will be received as one character.

A more accurate error message would be ``Can't use ttyS2 since the setserial data (and kernel data) indicates that another device is using ttyS2's interrupt''. Another possible reason is that you have an obsolete serial port: UART 8250, 16450 or early 16550 (or the serial driver thinks you do). Take care not to touch two pins at the same time with any metal object. useful reference If it refuses to be killed use "kill -9 100" to force it to be killed, but then the lockfile will not be removed and you'll need to delete it manually.

These gadgets have a couple of connectors which connect to serial port connectors (either at the ends of serial cables or at the back of a PC). RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07) Subsystem: Sony Corporation Device 9095 Flags: bus master, fast devsel, latency 0, IRQ 41 I/O ports at e000 [size=256] Memory at f0004000 (64-bit, Who a usb stick do it, or do i need something dedicated to work with the serial port. If it shows anything less than a 16550A, this may be your problem.

But if and when setserial runs from a start-up script, it changes the IRQ's and displays the new (and hopefully correct) state on on the startup screen. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Adv Reply December 29th, 2013 #2 steeldriver View Profile View Forum Posts Private Message Staff Emeritus Join Date Apr 2012 Beans 6,833 Re: 'Input/output error' on serial port I don't In many cases the module will automatically loaded when needed (if it can be found).

Watch the boot-time messages for the serial ports. 2. Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] 'Input/output error' on serial port For a Text-Terminal much of the info here will be of value as well as the troubleshooting info in Text-Terminal-HOWTO. 15.1 Serial Electrical Test Equipment Breakout Gadgets, etc. This means that an operation requested by setserial, stty, etc.

For example, #!/usr/bin/perl -slw use strict; $|=1; BEGIN { eval "use Device::SerialPort qw( :PARAM ); 1;"; die "[email protected]\n" if ([email protected]); } my $port = $ARGV; foreach $port(@ARGV) { my $ob = here the output, I added the symbols (----) when I plugged the device. Would not allowing my vehicle to downshift uphill be fuel efficient? Suncoast View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by Suncoast 07-23-2009, 05:00 PM #4 dxangel Member Registered: Nov 2008 Location: London,

There are more complicated ways to get access like belonging to a "group" that has group permission. 15.9 "Operation not supported by device" for ttyS?