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Hello,
I have a new 2019 Dell XPS 13 (9380). I ordered the official Ubuntu
edition from Dell which came with 18.04, but I've since wiped it and
installed 19.04 from a fresh ISO download. This is the non-touch non-4K
version (13-inch 1080p).
Every so often (maybe a couple of times per minute), the screen flashes
brighter, as if the brightness has been turned up momentarily and then
back down again.
I previously had an issue with the brightness / colours changing
slightly when I opened menus or if the screen content changed slightly,
but I fixed that by disabling Dynamic Brightness in the BIOS. It is
definitely a better experience with that turned off.
However the screen flashing still persists.
I booted a live image of Fedora 30 now that it has been released, and so
far I have not seen the screen flashing, so I do not think the hardware
is faulty.
I ran apport-bug, so hopefully the collected information has been
attached.
Thank you.
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: xorg 1:7.7+19ubuntu12
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun May 5 15:59:45 2019
DistUpgraded: Fresh install
DistroCodename: disco
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (prog-if 00 [VGA
controller])
Subsystem: Dell UHD Graphics 620 (Whiskey Lake) [1028:08af]
InstallationDate: Installed on 2019-04-28 (6 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: Dell Inc. XPS 13 9380
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-13-generic
root=UUID=fcb75d61-4e46-4391-8800-ccef7ff04f70 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/29/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.2
dmi.board.name: 0KTW76
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.3.2:bd03/29/2019:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9380
dmi.product.sku: 08AF
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20180925-2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: amd64 apport-bug disco ubuntu
--
Dell XPS 13 9380 - Screen brightness flashes
https://bugs.launchpad.net/bugs/1827790
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