A representation of a device that asynchronously transmits and receives serial data.

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5
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1answer
992 views

How to open tty or execute some script when the shortcut Ctrl+Alt+F[1-6] doesn't work and X11 is partially frozen but system is still working?

I'm using Ubuntu 10.10 with Gnome on Acer Aspire One netbook. The X11 or just some parts of Gnome like panels and partially windows (details described below) are frozen which doesn't allow to do ...
6
votes
0answers
39 views

Why does 8250 UART driver not wake up TTY if more than 256 characters are pending?

What is the motivation of this if-condition in void serial8250_tx_chars(struct uart_8250_port *up)? if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); It has been ...
3
votes
0answers
22 views

Why only 4 chars get sent to serial port via command-line

I'm trying to communicate with NodeMCU (CP210x USB/UART) from command-line. However it does not respond to my commands. I have set the correct baudrate via stty 9600 raw. echo ...
3
votes
0answers
165 views

Start application using xinit on different tty

I'm using Fedora 21, trying the following: On tty1 is running KDE, just as normal. But to speed up my games/avoid them changing something like gamma, I want to run them on a differnt tty, starting a ...
3
votes
0answers
348 views

How to prevent kernel or any broadcast messages from flooding the TTYs?

Because of some hot-plugging issue, similar to what talked of here, the TTY displays show a continuous stream of messages (which are also logged in the /var/log directory). Every text I key in flows ...
3
votes
0answers
833 views

Plymouth splash not working and causing VT problems

Since I tried installing Plymouth (boot splash), I'm facing two problems : It's not working My Virtual Terminals (tt1 - 6) aren't working anymore Here what I did : Added plymouth hook (after ...
3
votes
0answers
130 views

No Login on created on tty2 to 6

On my Debian Linux no Login is possible on terminals 2 to 6. Login on 1 works fine, xorg-session with XDM and awesome wm works, too. The Error Message shown on these 5 screens is: ...
3
votes
0answers
531 views

stty before login

We've got some HP-UX Integrity VMs that are difficult to log in to at the console because the KILL character is set to @, which also happens to be a component of some passwords. Now I know we can get ...
2
votes
0answers
25 views

How to run builds in Docker containers from Jenkins

I am trying to use Jenkins to build a C++ project in a Docker container. I have no problem building in Jenkins, or building in a container outside of Jenkins. Below is what I tried. I am omitting the ...
2
votes
0answers
174 views

How could a user log in via tty

I rented this cloud server, and it is kind of attacked recently. I can see a suspicious user logged in via tty. leetom@S152:~$ last -x ayn1 ayn1 tty1 Wed Oct 28 18:59 - ...
2
votes
0answers
197 views

Where EOF character is processed when it sent over telnet connection

Lets suppose I am connecting to telnet server, where bash is running. I am executing comand "cat > /tmp/qqq"; typing some contents of a file and finally sending 0x0a 0x04 which meant EOF. The ...
2
votes
0answers
414 views

cat /dev/ttyS0 Input/output error

I created infrared receiver as in LIRC manual (http://www.lirc.org/receivers.html). And tested it on windows using program called Terminal. When I switched on RTS pin DCD pin was also switched on ...
2
votes
0answers
76 views

How to use secondary VGA device for TTYs

I have a machine (a virtual XEN DomU, but I don't think it matters) with two video cards. I would like to display the TTYs on the monitor connected to the secondary video card (i.e., not the display ...
2
votes
0answers
458 views

Can't login using serial on ttyO0 - BeagleBone Black

I boot Beaglebone Black, connected to my desktop by serial. It was working great, until now. Beagle is booting, output shows up on the console, but at the end I can't log in. I can't type the login, ...
2
votes
0answers
384 views

tty blinking cursor not at insertion point

I have an Ubuntu 12.04 system where I, at reboot, login a root. This morning I did the things I had to and thought about running apt-get -y upgrade I started typing this but before pressing Enter I ...
2
votes
0answers
156 views

Controlling ppp's chat buffering

I looked at the ppp chat source and it uses putchar to write to the device. When PPP is run over a line discipline like n_gsm, which multiplexes a tty via the GSM 07.10 protocol, a lot of extra data ...
1
vote
0answers
19 views

Verizon LG VL600 USB 4g Modem

I am trying to connect an LG VL600 USB 4g Modem from Verizon on a Debian based machine (tried on Linux Mint and Raspberry Pi). I got it working on Windows 7 Virtualbox VM so I know the device and ...
1
vote
0answers
21 views

xfce4-Terminal doesn't create a new pts session?

I'm running Openbox on Manjaro, and I've come across a peculiarity trying to use write and wall with some friends. I use xfce4-terminal as my preferred terminal emulator, and I was never able to get ...
1
vote
0answers
11 views

Editing missing characters in some charmap/keyboard

I use the abnt2 layout on my american keyboard, but the backslash key \ is missing. How can I remap some glyph to an unused key or combination (eg. CtrlAltE or AltGrE)? I knows only that ...
1
vote
0answers
54 views

U-Boot: Changing TTY columns and rows for virtual consoles

Having installed GRUB as boot manager allows the operating system (Linux) to boot on specific video mode so the TTY virtual consoles change its columns and rows (width and height). For example, ...
1
vote
0answers
83 views

Setting custom baud rate on console

Just for aesthetics I would like to have my text on my console be displayed at a lower speed. I've tried using things like screen with custom baud rates of /dev/tty1 but it wouldn't work, input from ...
1
vote
0answers
91 views

how to copy files using TTY teminal from one pc to another connected through same home network

In my academic lab my friend copied files from one computer to another that were serially connected using the tty4. How could he have done this if there was no internet and he didn't install any new ...
1
vote
0answers
139 views

Fedora 21 VT Change Hangs

On Fedora 21, I have LightDM and i3 installed. When I switch to tty2 and do a bit of work then switch back, my laptop hangs. I am using Intel HD Graphics 4600. Thanks UPDATE now it sometimes ...
1
vote
0answers
108 views

Kernel loglevel and console manipulation

I want to have two console kernel arguments, one /dev/tty2 for screen and one /dev/ttyAM0 for serial debugging. I can achieve that simply with: console=ttyAM0,115200 console=tty2 I want /dev/ttyAM0 ...
1
vote
0answers
107 views

How to avoid session login failure with ecryptfs

After encrypting my /home directory with the migrate-home ecryptfs-utils script I can't log in to an XFCE session on my Manjaro system from the normal login screen. If I try to, the session is ...
1
vote
0answers
86 views

How do I assign the controlling terminal to other process?

I use TIOCSCTTY to forcibly take over the controlling terminal in other "remote" application. But after the application finishes running, controlling terminal gets orphaned and bash stops reacting to ...
1
vote
0answers
187 views

Cygwin serial tty device for high-numbered COM ports

My hardware enumerates as COM125 on the device manager (CDC-ACM class). But, I can't find it under /dev/tty* listing. Does cygwin have a limitation on CDC-ACM class of com ports or numbers greater ...
1
vote
0answers
76 views

Can slattach control a serial WiFi device?

I have a Wi-Fi device which is driven by AT commands over a USB-Serial connection. I am able to successfully make a serial connection to the device and set the SSID, PSK, obtain an IP address, and do ...
1
vote
0answers
623 views

Only met by a tty “login” prompt when booting Mint

I've installed Linux Mint 11 Katya (dual-booting with Win7) on my PC. After some problems with booting, I decided to use NeoGrub to add a Grub-based bootloader, configurable from within Windows, to ...
1
vote
0answers
458 views

LMDE, Graphics with i915 and KMS: DVI not working on tty consoles

I already asked the same question at Super User, but I think it's better suited here, sorry: I have some problems getting the DVI output of my onboard Intel graphics device running when using KMS. ...
0
votes
0answers
5 views

Texas TI RFID Reader Hardware

[ 7598.927163] usb 1-1.3: USB disconnect, device number 10 [ 7636.541074] usb 1-1.3: new full-speed USB device number 11 using dwc_otg [ 7636.646870] usb 1-1.3: New USB device found, idVendor=2047, ...
0
votes
0answers
15 views

QEMU kernel panic to serial port

I'm working with kernel 2.6.13.1 on Debian 6 with QEMU/KVM for a class. The kernel, once installed, panics on boot. The curses interface to qemu doesn't seem to allow scrollback to view the entire ...
0
votes
0answers
38 views

Running SSH command from PHP gives sudo: no tty present and no askpass program specified error even though NOPASSWD settings are done

I am using LAMPP to run apache server. From a php file I am executing a python script which executes ssh, scp commands. But I am getting error as sudo: no tty present and no askpass program ...
0
votes
0answers
28 views

'Unbusy' terminals which will be logged out when TMOUT is reached

I would like auto-logout some terminal sessions with a TMOUT (timeout) configuration, but in that case the users leave a program opened for which the 'unbusy' sign is the ZERO I/O between server and ...
0
votes
0answers
32 views

Zenity, how to manage cryptsetup prompt?

With Zenity, I display a progressBar and install/config many stuff on a Linux Mint (Debian) computer. I had to avoid any prompt. But one step prompts Enter a passphrase:, this is cryptsetup ...
0
votes
0answers
208 views

One single /dev/ttyACM for multiple composite devices (USB-Serial) connected to a hub

When I connect multiple composite devices to a USB hub, and then connect the hub to my laptop(running Fedora 21), I can see only one /dev/ttyACM* file. When I connect these devices directly into ...
0
votes
0answers
35 views

interceptty error message

I want to listen to a certain device on my linux system. therefore I am using interceptty. When I call: mv ttyO0 ttyO0-orig and then ./interceptty -o ttyO0.out /dev/ttyO0-orig /dev/ttyO0 & I ...
0
votes
0answers
314 views

echo `“hello terminal” > /dev/terminal` - works for /dev/tty[2-5] but not for /dev/pts/n

I'm trying to get to know the input output systems of unix/linux systems better. Since terminals and devices are implemented to interface as ordinary files, I assumed I could on any desired terminal ...
0
votes
0answers
106 views

Does udev only check for matches on the first remove event?

ACTION=="add|remove",SUBSYSTEM=="tty", ATTRS{idVendor}=="XXXX", ATTRS{idProduct}=="XXXX",SYMLINK+="device", RUN+="/home/alvin/udev/test.sh" This is the command that works on add ...
0
votes
0answers
207 views

Serial port locked by random process

I have an issue with trying to open a USB device's serial port with pyserial. It seems that as fast as I connect the device, /dev/ttyACM0 is used by some random process. ModemMana 851 root 8u ...
0
votes
0answers
204 views

linux + what are the messages bad tty under /var/log/messages file

under /var/log/messages I see the following messages "bad tty" what the meaning of these messages? second is it caused because some application that called - owstd ? as we can see from the log? ...
0
votes
0answers
253 views

How to switch between the virtual consoles ttyv1, ttyv2 10 on FreeBSD?

The CTRL+ALT+F1..F12 keybinding does not work. I'm using kde interface.
0
votes
0answers
247 views

How to make switching virtual terminals instant?

I've configured kdm (editing /usr/share/config/kdm/kdmrc) to automatically open two displays: StaticServers=:0,:1. When I switch between them with Ctrl+Alt+F7-8 there is a delay of about 2 seconds ...
0
votes
0answers
1k views

TTY1 message help? (with picture)

When I boot up , I am greeted with a black TTY1 screen with the following error Kali GNU/Linux 1.0.7 kali tty (screenshot here) Kali Login:[ 31.695480] brcmsmac: bcma0:0: brcmsmac: ...
0
votes
0answers
261 views

Script to gracefully kill X server and drop to tty?

I use the terminal to do the majority of my day-to-day computing, so I have the default runlevel set to 3 in /etc/inittab and I only start the X server when I need to. I currently have the following ...
0
votes
0answers
196 views

Schemes for linux tty and xterm

I actually prefer the font and colorscheme used when I'm in a tty terminal. After I start up a window manager, the colorscheme and font are completely different when I'm in xterm -- which is expected. ...
0
votes
0answers
349 views

Which getty should I use for /dev/tty1 - tty6 text consoles in linux, agetty or something other

I'm configuring LFS linux and I want to select right "getty" for /etc/inittab to handle text consoles /dev/tty1 - /dev/tty6 (the text consoles handled by linux kernel, with output on first display). ...
0
votes
0answers
139 views

Root has no permission on virtual console screen devices

Even being root I can't do the following: # cat /dev/vcs1 cat: /dev/vcs1: Operation not permitted And the rights are set correctly: # ls -o /dev/ crw-r--r-- 1 root 7, 1 Aug 5 22:00 vcs1 ...
0
votes
0answers
556 views

Ubuntu cannot start from terminal

Ubuntu 12.04 By a mistake, I stopped lightdm. Then switched to tty1, and rebooted. Now, After startup, It just came a black screen with a cursor, can type nothing. I tried Ctrl+F1 to F12 (and ...
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0answers
34 views

How to retrieve SSH remote data from a tty device via linux?

I have data coming from a device tty which is on a remote machine (via a SSH connection with IP:Port and a user:password to access it). Via PuTTy, I can log on to that IP and Port and put manually ...