title: Send printk to serial
body: <p>I am trying to debug a module for the Linux kernel. I heard that it is possible to send the console output to a serial port. I'm running Ubuntu on vmware and want to send printk message to the host.
  I have managed to set up a serial Connection and can send an echo to the host by typing echo > simething /dev/ttyS1
  But I can't figure out how to send the output on the console to ttyS1.</p>
  
  <p>My main problem is that when the module/kernel crashes the last printk-messages are lost and not even displayed, it just buffers. </p>