Public bug reported:
When using a external monitor on a Dell Precision 5520 Notebook and
booting with lid closed ...
1. the lid stays blank when later opening it (happens on Ubuntu 18.10
and 18.04)
2. and login using a Xorg is not possible (a login-loop happens on
Ubuntu 18.10)
Digging in sysfs I saw that /sys/class/backlight/intel_backlight/bl_power
0 (and manually changable) when booted with lid open
but 4 (and unchangable) when booted with lid closed.
Other (eg. power) entires under /sys/class/backlight/intel_backlight
can't be changed or don't help and changing
/sys/class/backlight/intel_backlight/brightness don't help as well.
There is neither a difference in dmesg output (except some additional
"enabling Extended Tags" when booting with lid open) nor any difference
in modules loaded.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-10-generic 4.18.0-10.11
ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
Uname: Linux 4.18.0-10-generic x86_64
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mm 1720 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Nov 2 13:38:44 2018
InstallationDate: Installed on 2018-10-19 (13 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f3:24a1 Elan Microelectronics Corp.
Bus 001 Device 005: ID 0c45:6713 Microdia
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Precision 5520
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/vmlinuz
root=UUID=31b59337-0e21-48d0-bede-155475fc0c7b ro rootflags=subvol=@ rootwait
vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.18.0-10-generic N/A
linux-backports-modules-4.18.0-10-generic N/A
linux-firmware 1.175
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/02/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.12.1
dmi.board.name: 0R6JFH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.12.1:bd10/02/2018:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn0R6JFH:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Precision
dmi.product.name: Precision 5520
dmi.product.sku: 07BF
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug cosmic
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https://bugs.launchpad.net/bugs/1801359
Title:
Notebook lid blank after booting with lid closed
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