lightdm fails to unlock with serial console configured

[js1]

With /etc/default/grub configured for serial console output as follows (seehttps://help.ubuntu.com/community/SerialConsoleHowto):

GRUB_DEFAULT=0
GRUB_TIMEOUT=3
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,9600n8"

#GRUB_TERMINAL=console
GRUB_TERMINAL="serial console"
GRUB_SERIAL_COMMAND="serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1"

Lightdm fails to unlock a locked screen. Initial login works fine. But, when the screen locks, the correct password is accepted, but the screen does not unlock.

If I disable serial console with the default "GRUB_TERMINAL=console", lightdm screen unlock seems to work fine. I don't know if this is a problem with lightdm or light-locker.

[Theo Linkspfeifer (lastonestanding)]

Is this still the case when testing with a currently supported Ubuntu release?

[Launchpad Janitor (janitor)]

[Expired for lightdm (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for light-locker (Ubuntu) because there has been no activity for 60 days.]