3
votes
1answer
57 views

Linux console: only kernel messages are printed

My Linux system is built by Buildroot and runs on a Raspberry Pi. I use a Usb to TTL Serial cable to get a console. Here comes cmdline.txt dwc_otg.fiq_fix_enable=1 sdhci-bcm2708.sync_after_dma=0 ...
3
votes
0answers
59 views

Output shutdown messages to multiple consoles

I have configured my system to direct console output on boot to serial and vga using kernel parameters. Serial is the last argument in the kernel parameters and will be the default used for ...
1
vote
1answer
65 views

Serial communication not working in both directions

I am working with a SOM mounted on a carrier board running Ubuntu 14.04 with the generic 3.13 kernel. While testing out the peripherals, I hit a problem with serial communication. Basically, I can ...
2
votes
1answer
50 views

Should IP tables rules affect a serial port on Linux

I'm trying to setup some iptables rules on my embedded Debian Linux system, using a serial console I entered this: root@ts7600-47aad3:~# iptables -F root@ts7600-47aad3:~# iptables -P INPUT DROP ...
2
votes
1answer
934 views

Terminal server (ser2net) to configure new HP procurve switch

Switch: HP ProCurve 2910AL-48G - J9147A This switch is brand new straight from HP. Anyone familiar with ser2net for creating a terminal server to connect from usb>serial>console port on a HP ...
3
votes
3answers
8k views

GSM modem does not create /dev/ttyUSB file

I installed Kannel in a server, and I want to use a GSM 3G USB modem to send/receive SMS messages, as described in section SMS Centers > GSM Modem of the Kannel User Guide. I have already installed, ...
3
votes
0answers
239 views

Increasing serial baud rate within Ubuntu under VirtualBox

I'm debugging a kernel module under VirtualBox with a guest and host OS as Ubuntu 10.10. I'm using the virtualbox serial port but I'm maxing out at the baudrate 115200. My grub config looks like ...
4
votes
2answers
1k views

Buffer overrun on Fedora 16 serial

I got a brain smashing problem with Fedora 16 and my serial port. I use the serial to monitor an STB on which I'm developping. The STB runs on Linux and when booted, I launch the program I'm working ...
2
votes
2answers
2k views

how to re-enable input on a serial console

I have an old router which runs Linux and I'd like to have a serial console on. This used to work fine, but after a firmware update, I can now only get output on the console and cannot give any input ...
0
votes
1answer
601 views

Connect to linux device without SSH

Is there any way to connect to a device without using SSH? I've broken the keyboard on my Nokia N900 and want to get access to it. It must be possible?
19
votes
4answers
2k views

Kernel Hacking Environment

I have been working in embedded OS like uCOS, ThreadX. While I have coded apps in Linux, now I’m planning to start learning Linux Kernel. I have few questions regarding the environment. Which is ...
6
votes
3answers
7k views

How do I connect a serial terminal to a KVM instance?

Perhaps I'm misunderstanding what KVM is capable of, but the ability to add/remove hardware on the VM seems to imply I can add a serial port that then acts as a terminal. So, my questions are: ...