I tested the current latest version (4.4.19) and it appears the bug is
fixed there.
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1613359
Title:
Xrandr gamma and brightness problem on 4.4.0-34 kernel
Status in linux package in Ubuntu:
Confirmed
Bug description:
Situation
Xubuntu 16.04 after the automatic update of the kernel, from 4.4.0-31
to 4.4.0-34.
If I give a xrandr command that does not change the resolution or the output
monitor, but only the gamma and brightness
xrandr --output eDP1 --mode 1368x768 --rate 60 --gamma 1.25: 1.25: 1.25
--brightness 1:25
In eDP1 already 60 hertz and already 1368x768
Nothing is happening.
The change in brightness occurs if you change the resolution:
xrandr --output eDP1 --mode 1024x768
The screen is considerably brighter.
After the command:
xrandr --output eDP1 --mode 1024x768 --rate 60 --gamma 1: 1: 1
--brightness 1
Nothing happens, but the change of brightness occurs to the resolution
change.
for example
xrandr --output eDP1 --mode 1360x768
or
xrandr --output eDP1 --mode 1360x768 --rate 60 --gamma 1: 1: 1 --brightness 1
Loading the previous kernel 4.4.0-31 the brightness and gamma change
immediately.
Is my first report, I hope it is clear. Thank you.
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ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: robby 3691 F.... pulseaudio
CurrentDesktop: XFCE
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=40af1a02-6e4a-4c2a-8ffb-4f2cf48bc95a
InstallationDate: Installed on 2016-07-01 (44 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
MachineType: HP HP ENVY Notebook
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic.efi.signed
root=UUID=b3c35f62-3284-4572-a839-8926f4cae17d ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
RelatedPackageVersions:
linux-restricted-modules-4.4.0-34-generic N/A
linux-backports-modules-4.4.0-34-generic N/A
linux-firmware 1.157.3
Tags: xenial
Uname: Linux 4.4.0-34-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/19/2016
dmi.bios.vendor: Insyde
dmi.bios.version: F.32
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 80E5
dmi.board.vendor: HP
dmi.board.version: 87.57
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsyde:bvrF.32:bd01/19/2016:svnHP:pnHPENVYNotebook:pvrType1ProductConfigId:rvnHP:rn80E5:rvr87.57:cvnHP:ct10:cvrChassisVersion:
dmi.product.name: HP ENVY Notebook
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
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