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Wenzel/grub.conf

Created January 18, 2018 06:05
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/etc/default/grub configuration file to get Xen output on a serial cable
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grub.conf
GRUB_CMDLINE_LINUX="earlyprintk=xen"
GRUB_CMDLINE_XEN_DEFAULT="com1=115200,8n1 console=com1 loglvl=all guest_lvl=all"
GRUB_TERMINAL="serial"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
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Wenzel commented Jan 18, 2018

  • add serial=pty to your Xen guest config file.
  • start the guest
  • append these lines to /etc/default/grub
  • run update-grub2
  • reboot the guest
  • on the host, you can run sudo xl console <DomID>
  • profit

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