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I use nethack with ttyrec to archive my funny deaths. My only issue is that nethack uses as much screen space as possible to print log massages. I would like to limit it to only work with 80x24 ...
jptrzy's user avatar
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We have an old setup of a PLC and an old PC (from 90s). The PC previously ran a windows program reading PLC data from a Serial port and plotting it on the monitor. Long story short, the old program no ...
Seyedmahdi moosavyan's user avatar
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How do you enable hardware flow control for the Linux serial console? Perhaps using GRUB arguments? This post asks about specifying arguments to QEMU and GRUB to use the serial console, but doesn't ...
atod's user avatar
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1 answer
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I've got a machine running OpenSuSE Leap 15.5, which can be remote-controlled both by usign a local serial line (RS232), and via network (SSH). Now I've got an /etc/issue file auto-generated by /usr/...
Neppomuk's user avatar
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I am trying to use a usb cable from a Raspberry (in peripheral mode, serial CDC ACM) to a PC to access GRUB2 serial console (on the PC). I succeeded with a pl2303 usb ttl adapter, the usbserial_pl2303 ...
Kzar's user avatar
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15 votes
2 answers
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For better or worse, I hooked up my VT320 to my Linux machine. I'm trying to run some software on, but the serial connection seems to end up in a crashed state whenever somes emojis are rendered. Not ...
Evert's user avatar
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1 answer
68 views

I'm trying to use a Minitel as a console to connect to my Ubuntu. I've read a lot of information about this, but it seems to work with older versions of Ubuntu. These two files : etc/inittab etc/...
DroiTof's user avatar
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I've got a cluster of four nodes running Debian Bullseye. All of them are connected to a controller board via a UART for admin purposes. The control board uses picocom to access the serial console of ...
Neppomuk's user avatar
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1 answer
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I'd like to use my old VT420 terminal as system console. Adding RS232 ports and setting up serial-getty are not a problem, but: For years, almost all Linux distros have been using UTF-8 as the ...
Neppomuk's user avatar
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1 answer
132 views

What is the equivalent of clear line con 0 in Cisco IOS? I'm using serial-getty@ttyS0.
viator's user avatar
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1 answer
121 views

How do I recover the console of the first guest when itself is connected to a guest of which it is the host? Host1:~$ virsh console Guest1 ... Connected to domain 'Guest1' Escape character is ^] (...
viator's user avatar
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In the early days of computing, the setup is usually like this: and we call the VT-100 "physical terminal". But in Linux, we call virtual terminals "virtual" (the ones accessed by ...
JLC's user avatar
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Are serial consoles considered local by polkit? Could that be configured e.g. via /etc/securetty?
kirjosieppo's user avatar
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I'm using telnet to connect to a serial port via a TCP/IP server. I need a raw, unfiltered, unbuffered connection, and can get most of the way there, but no matter what I do telnet sends protocol ...
Daniel Griscom's user avatar
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145 views

I have made a service script which runs a script file after reboot and starts after the service [email protected]. The problem is my script file requires some user inputs to be given but the ...
ROSHAN RAJAGOPAL's user avatar
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1 answer
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Soo I was playing with firewalld on my ubuntu server instance (Oracle Cloud) and I forgot to add rule for ssh Port so I can't connect to it I tried using serial console becouse OCI lets you connect to ...
Im-CatDev's user avatar
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254 views

I am trying to send a binary file from Raspbian to an ESP32 device on a RPI USB port, and read response data. I can cat file > /dev/ttyS0, but obviously ">" discards output from the ...
William Q's user avatar
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647 views

I have seen that it is possible to connect two computers by USB cable and make a virtual ethernet bridge or something like that. My question is, can we do something similar but configure the ...
DEKKER's user avatar
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3 answers
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I need help to find a kernel patch to get a VTIME from tty termios API lower than 100ms, in order to decrease gap inter char. It blocks read syscall until VTIME timeout. Function n_tty_read() is the ...
K. PANIK's user avatar
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I’m running virtual linux machine (debian12) on QEMU with -device virtconsole argument. That argument adds /dev/hvcX device nodes to VM. QEMU can connect that device to unix socket on host. If i pass “...
xycainoff's user avatar
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1 answer
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I have a Linux system that has USB ports, no RS-232 port. I would like to be able to plug in a USB cable into the Linux system and the other end of the USB cable into my PC, which happens to be ...
Jibun no Kage's user avatar
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139 views

PSTORE description says pstore is an oops/panic logger that writes its logs to a block device and non-block device I configured my kernel (embedded system) to store console output to pstore too. Now ...
leonp's user avatar
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2 votes
1 answer
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I have a proprietary Linux system, with a proprietary init system, which uses a serial console. I lately noticed, that the xon/xoff flow control is active on this serial console, which poses the risk ...
Sascha's user avatar
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3 votes
4 answers
257 views

I have a daemon running on an embedded Linux device with its output redirected to the serial console: my_daemon > /dev/ttyS0 But now if a user exits the shell running on the serial interface then ...
phk's user avatar
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1 answer
356 views

On a headless Ubuntu 22.04 machine, I'd like to start a headless installation of NetBSD 9.2 in VirtualBox. I have a prepared virtual machine with a set of blank disk images attached, as well as with ...
Kusalananda's user avatar
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1 answer
244 views

I recently acquired an old Heathkit dumb terminal, and I would like to get it working with the colemak keyboard layout. Because the terminal sends ascii codes directly over serial, I don't believe ...
runrin's user avatar
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2 votes
1 answer
652 views

I have an ARM Dev board using an RK3566 CPU that I'm building a kernel for. I would like to control the board using the UART connector. This works during U-Boot process, but my issue is that when I ...
Chris Hudlin's user avatar
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4 votes
1 answer
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I am trying to read in serial data from an RS-485 RFID reader using a RS-485 to USB converter found here and a python script running Pyserial. The issue I'm facing is that when I print out what is ...
Xander Soriano's user avatar
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2 votes
2 answers
2k views

My Ubuntu 20.04 system has a serial port over which I would like to provide console access. I can confirm that I can communicate over the serial port with sudo picocom -b 115200 /dev/ttyS5 I start ...
rgov's user avatar
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0 answers
78 views

In device.hints FreeBSD manpage we have following description: A device hint line looks like: hint.driver.unit.keyword="value" where driver is the name of a device driver, unit is the ...
alirezaarzehgar's user avatar
  • 101
4 votes
1 answer
2k views

Trying to connect a serial device (3d printer) through the USB port in order to communicate with it (klipper firmware) on an Android device (LOS 18.1/Android 11, 3.18 kernel). But I can't find it in /...
martinvince's user avatar
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0 answers
82 views

The documentation for the vt52 terminal does not include the codes transmitted for CTRL+ something, ALT+ something (clearly: they did not exist). screen launched in vt52 mode sends some keys. For ...
Fabio Dalla Libera's user avatar
  • 119
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2 answers
2k views

I have been reading about the Serial Console. So let us say I have an android phone and want to read its serial output from a computer. I can compile a kernel for the phone no problem. I see things ...
Bret Joseph's user avatar
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3 votes
1 answer
779 views

I would like to observe my Linux system while getting suspended. Reading out the dmesg does not work, because my system stops logging until the device resumes. But that's exactly the problem, my ...
flood's user avatar
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1 vote
1 answer
2k views

I'm trying to boot CentOs already installed on an appliance. This appliance has only two input connectors: 1 USB port, where I plugged in a USB hub, to which I connected a keyboard 1 Male 9 Pin ...
cimere's user avatar
  • 111
0 votes
1 answer
2k views

I rely on serial console on CentOS 8 to debug. I ever set it up on CentOS 7 by editing file /etc/default/grub as below, GRUB_CMDLINE_LINUX="crashkernel=auto console=tty0 console=ttyS0,...
codexplorer's user avatar
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1 answer
279 views

I have an old PC I am trying to configure thru console. Problem is it does not has console or IPMI port. Instead of hooking a keyboard and monitor to the old PC, I want to connect (somehow) to the &...
Rajeev's user avatar
  • 268
2 votes
1 answer
3k views

This is related to a previous thread I created about a month ago and which was answered. Today I am attempting to setup a serial console login prompt on a laptop running Ubunutu 20 with a Belkin ...
Albert Elmore's user avatar
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0 votes
0 answers
188 views

I have a python script that reads from serial: import serial s = serial.Serial("/dev/ttymxc0", 115200) for i in range(100): with open("test", 'w') as f: f.write(s....
firion's user avatar
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0 votes
1 answer
388 views

I want to establish connection via putty (serial connection) using UC232a adapter connected to null modem cable, connected to mini-serial-to-DB9 adapter and then to another PC with CentOS 7. First of ...
wpcpremium80's user avatar
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3 votes
0 answers
416 views

In el6 with console=tty0 console=ttyS0,115200 in the kernel cmdline I would get sysvinit and kernel printk output in both the AWS system log and the instance screenshot. Example showing both printk ...
linux_sa's user avatar
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3 votes
1 answer
2k views

When pasting large amounts of text into a serial console like screen or minicom, some characters get lost and are not being transmitted.
finefoot's user avatar
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0 votes
2 answers
2k views

Minicom has this useful setting called "character tx delay": Is there a setting like this for GNU screen, too?
finefoot's user avatar
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1 vote
1 answer
641 views

I would like to read a serial input (as for example here) in linux command line but I am not able to find out the attached device (Arduino) path. I can identify the device: # lsusb Bus 005 Device 001: ...
Kube Kubow's user avatar
  • 113
1 vote
1 answer
312 views

Any idea why syslinux output is duplicated in QEMU serial console? SeaBIOS (version rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org) iPXE (http://ipxe.org) 00:03.0 CA00 PCI2.10 PnP PMM+3FF8F290+3FEEF290 ...
Jiri B's user avatar
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0 votes
2 answers
398 views

I have an embedded Linux system with 2 built-in serial ports, and a PCI board that adds 8 more. The kernel enumerates the devices in a way that the port numbers end up getting interleaved, for ...
rgov's user avatar
  • 273
1 vote
1 answer
889 views

In Minicom, I prefer to change my Newline tx delay (ms) setting via CTRL-A T to incorporate some delay between newlines, usually 100ms. That way there is a delay when I am pasting something into a ...
joeshmo's user avatar
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1 vote
0 answers
221 views

I have a UART that is displayed in a Linux boot log as: AMDI0020:01: ttyS5 at MMIO 0xfedca000 (irq = 4, base_baud = 3000000) is a 16550A I want to enable Linux kernel boot log to this UART port. To ...
kostr22's user avatar
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2 votes
1 answer
2k views

I have a UART that is displayed in a Linux boot log as: AMDI0020:01: ttyS5 at MMIO 0xfedca000 (irq = 4, base_baud = 3000000) is a 16550A I want to enable Linux kernel boot log to this UART port. To ...
kostr22's user avatar
  • 216
2 votes
0 answers
449 views

Is it possible to redirect GRUB2 output to a MMIO serial UART? For example I have a UART that is displayed in a Linux boot log as: AMDI0020:01: ttyS5 at MMIO 0xfedca000 (irq = 4, base_baud = 3000000) ...
kostr22's user avatar
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