After configuring screen energy saving in KDE, I noticed that after DPMS standby, my screen brightness is set to maximum. This is confirmed by `cat /sys/class/backlight/intel_backlight/brightness`. The problem can be easily reproduce by switching to standby manually using `xset dpms force standby`.
Steps to reproduce:
1) echo "300" | sudo tee /sys/class/backlight/intel_backlight/brightness
2) cat /sys/class/backlight/intel_backlight/brightness
This will report: 300
3) xset dpms force standby
4) Move mouse/press key
5) cat /sys/class/backlight/intel_backlight/brightness
This will report 937
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
Uname: Linux 4.1.0-3-generic x86_64
ApportVersion: 2.18-0ubuntu7
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Aug 29 21:26:27 2015
InstallationDate: Installed on 2015-08-10 (20 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150809)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
BootLog: enabled, not active
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: KDE
DistUpgraded: Fresh install
DistroCodename: wily
DistroRelease: Ubuntu 15.10
DistroVariant: kubuntu
DkmsStatus:
virtualbox, 5.0.4, 4.2.0-10-generic, x86_64: installed
virtualbox, 5.0.4, 4.2.0-7-generic, x86_64: installed
ExtraDebuggingInterest: No
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a2e] (rev 09) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:13bd]
InstallationDate: Installed on 2015-08-10 (40 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150809)
Lsusb:
Bus 001 Device 005: ID 03eb:8a0c Atmel Corp.
Bus 001 Device 004: ID 1bcf:2987 Sunplus Innovation Technology Inc.
Bus 001 Device 003: ID 8087:07dc Intel Corp.
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX301LAA
Package: xorg 1:7.7+7ubuntu4
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-10-generic.efi.signed root=UUID=103e34fc-23b4-497c-ac6b-791d423bee52 ro quiet splash acpi_osi= i915.powersave=1 i915.semaphores=1 i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 drm.vblankoffdelay=1 vt.handoff=7
ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
Tags: wily kubuntu single-occurrence reproducible has-workaround has-fix
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
Uname: Linux 4.2.0-10-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
XorgConf:
Section "Extensions"
Option "Composite" "Disabled"
EndSection
_MarkForUpload: True
dmi.bios.date: 05/08/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX301LAA.209
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX301LAA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX301LAA.209:bd05/08/2014:svnASUSTeKCOMPUTERINC.:pnUX301LAA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX301LAA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX301LAA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.6.3-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.6.3-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Sat Sep 19 18:26:05 2015
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 5126
vendor SHP
xserver.version: 2:1.17.2-1ubuntu7
Czikus, could you please run the following command from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1490229
Please ensure you have xdiagnose installed, and that you click the Yes button for attaching additional debugging information.