See additional logs files attached. This is a hybrid Intel/AMD system, but the Intel graphics is the only one used as far as I know:
% lspci -nnk -d ::0300 00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) DeviceName: Onboard IGD Subsystem: Dell 4th Gen Core Processor Integrated Graphics Controller [1028:05cc] Kernel driver in use: i915 Kernel modules: i915 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Venus XT [Radeon HD 8870M / R9 M270X/M370X] [1002:6821] (rev ff) Kernel driver in use: radeon Kernel modules: radeon -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1760371 Title: Light Display Manager fails to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1760371/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs