Public bug reported:
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.
** Affects: evince (Ubuntu)
Importance: Undecided
Status: New
** Tags: console light-locker lightdm lock screen serial
** Attachment added: "/var/log/lightdm/*"
https://bugs.launchpad.net/bugs/1450834/+attachment/4389139/+files/lightdm_logs.tar.gz
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https://bugs.launchpad.net/bugs/1450834
Title:
lightdm fails to unlock with serial console configured
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