Ubuntu guest's xterm.js works, NoVNC just blinks cursor

JBB

Member
I'd like to have the choice between both NoVNC and xterm.js for an Ubuntu 16.04 guest, but for some reason after I configured the serial terminal for xterm.js, NoVNC stopped working. When I start a session with it, I just see a blinking cursor in the top left of the window and I can't connect properly.

NoVNC used to work before I added a serial device. Xterm.js is working fine.

Here's what I have in /etc/default/grub:
Code:
GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="splash quiet"
GRUB_CMDLINE_LINUX="console=tty1 console=ttyS0,115200"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
GRUB_TERMINAL="console serial"
This is the output from dmesg | grep tty:
Code:
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic root=UUID=d5401f88-082a-4763-a6f6-d5d04f0edc61 ro console=tty1 console=ttyS0,115200 splash quiet vt.handoff=7
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-47-generic root=UUID=d5401f88-082a-4763-a6f6-d5d04f0edc61 ro console=tty1 console=ttyS0,115200 splash quiet vt.handoff=7
[    0.004000] console [tty1] enabled
[    0.004000] console [ttyS0] enabled
[    2.061516] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
Does anyone know what might be causing the problem with NoVNC?
 

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