Josh, could you try building LightDM from lp:~robert-ancell/lightdm/new-
mir-socket-variable and confirm if that fixes the issue?
** Also affects: lightdm (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: lightdm (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: lightdm (Ubuntu Xenial)
Assignee: (unassigned) => Robert Ancell (robert-ancell)
** Also affects: lightdm/1.18
Importance: Undecided
Status: New
** Changed in: lightdm/1.18
Importance: Undecided => High
** Changed in: lightdm
Status: Incomplete => In Progress
** Changed in: lightdm/1.18
Status: New => In Progress
** Changed in: lightdm (Ubuntu)
Status: New => In Progress
** Changed in: lightdm (Ubuntu Xenial)
Status: New => Confirmed
** Changed in: lightdm (Ubuntu Xenial)
Status: Confirmed => Triaged
** Changed in: lightdm (Ubuntu)
Status: In Progress => Triaged
** Changed in: lightdm/1.18
Assignee: (unassigned) => Robert Ancell (robert-ancell)
** Changed in: lightdm/1.18
Milestone: None => 1.18.2
** Changed in: lightdm
Milestone: None => 1.19.1
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1583624
Title:
Mir cannot open a tty when started by lightdm
Status in Light Display Manager:
In Progress
Status in Light Display Manager 1.18 series:
In Progress
Status in lightdm package in Ubuntu:
Triaged
Status in lightdm source package in Xenial:
Triaged
Bug description:
From mir-greeter.log (and with minor instrumentation from RAOF)
ERROR: QMirServer - Mir failed to start
qtmir.screens: ScreenController::ScreenController
qtmir.mir: MirServer created
qtmir.mir: Command line arguments passed to Qt: ("/usr/bin/unity8",
"--mode=greeter")
ERROR:
/home/josh/Documents/mir/verbose-error-for-vt-finding/src/server/graphics/default_configuration.cpp(133):
Throw in function
mir::DefaultServerConfiguration::the_graphics_platform()::<lambda()>
Dynamic exception type:
boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error>
>
std::exception::what: Exception while creating graphics platform
ERROR:
/home/josh/Documents/mir/verbose-error-for-vt-finding/src/platforms/mesa/server/kms/linux_virtual_terminal.cpp(238):
Throw in function int
mir::graphics::mesa::LinuxVirtualTerminal::find_active_vt_number()
Dynamic exception type:
boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error>
>
std::exception::what: Failed to find the current VT. Tried:
/dev/tty0:
Failed to open read-only: Permission denied
Failed to open write-only: Permission denied
/dev/tty:
Failed to open read-only: No such device or address
Failed to open write-only: No such device or address
This occurs when trying to start the unity8 greeter under unity system
compositor
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https://bugs.launchpad.net/lightdm/+bug/1583624/+subscriptions
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