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
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1760371
Title:
Light Display Manager fails to start
Status in lightdm package in Ubuntu:
New
Bug description:
1) Output of lsb_release -rd:
Description: Ubuntu 16.04.4 LTS
Release: 16.04
2) Output of apt-cache policy lightdm:
lightdm:
Installed: 1.18.3-0ubuntu1.1
Candidate: 1.18.3-0ubuntu1.1
Version table:
*** 1.18.3-0ubuntu1.1 500
500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
1.18.1-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
3) What I expected to happen:
- Expected the display manager to take me to the lightdm user login screen.
4) What happened instead:
- lightdm made 5 attempts to start before failing. Failure messages were
"failed to start Detect the available GPUs and deal with any system changes"
and "Failed to start Light Display Manager".
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl wl
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Sat Mar 31 17:43:08 2018
InstallationDate: Installed on 2015-11-23 (859 days ago)
InstallationMedia:
ProcEnviron:
TERM=linux
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/zsh
SourcePackage: lightdm
UpgradeStatus: Upgraded to xenial on 2017-01-18 (437 days ago)
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