Public bug reported:
Previously had Ubuntu 16.04 installed on this machine, but I installed
Xubuntu over it including formatting my partitions. I did not have
issues with adjusting the brightness, getting the screen to show, or
Xorg crashes prior to the second install (ie the Ubuntu worked fine).
This bug falls under "Backlight control does not work and there are no
entries in /sys/class/backlight" category. I also experience the Blank
Screen at Startup issue, which is only remedied by adding nomodeset to
the grub boot options.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-92-generic 4.4.0-92.115
ProcVersionSignature: Ubuntu 4.4.0-92.115-generic 4.4.76
Uname: Linux 4.4.0-92-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sebastian 6377 F.... pulseaudio
CurrentDesktop: XFCE
Date: Fri Aug 25 22:42:52 2017
HibernationDevice: RESUME=UUID=14b7bd47-d085-4964-8823-eedc74c0391d
InstallationDate: Installed on 2017-08-20 (6 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: Dell Inc. Inspiron 15-3552
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-92-generic.efi.signed
root=UUID=fe7fca66-0701-4ee1-bdfe-baf9f4bffcab ro nomodeset
RelatedPackageVersions:
linux-restricted-modules-4.4.0-92-generic N/A
linux-backports-modules-4.4.0-92-generic N/A
linux-firmware 1.157.11
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/26/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 4.0.7
dmi.board.name: 0787MR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvr4.0.7:bd04/26/2016:svnDellInc.:pnInspiron15-3552:pvr4.0.7:rvnDellInc.:rn0787MR:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 15-3552
dmi.product.version: 4.0.7
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Attachment added: "acpi"
https://bugs.launchpad.net/bugs/1713195/+attachment/4939012/+files/acpi
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https://bugs.launchpad.net/bugs/1713195
Title:
Backlight Won't Adjust, Xorg Failures
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