the display brightness doesn't change (it is to the max) with Mir in ubuntu 13.10

[Andrea Biolo]

I have used this guide http://www.olli-ries.com/running-mir/ to install and try Mir on a notebook Asus K55VD. There is a problem with display brightness. The hotkeys (fn+F5 or F6) work but the brightness is always to the max.

Edit: Also if I install mir/xmir with the official repo (sudo apt-get install unity-system-compositor) there is same problem

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7
Uname: Linux 3.10.0-1-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.10.2-0ubuntu3
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sun Jun 30 11:33:08 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:1457]
 NVIDIA Corporation GF119M [GeForce 610M] [10de:1058] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:1457]
InstallationDate: Installed on 2013-05-03 (57 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130503)
MachineType: ASUSTeK COMPUTER INC. K55VD
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-1-generic root=UUID=a9331eee-c84b-4f41-b77e-a157407ddb82 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/11/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: K55VD.411
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: K55VD
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.:bvrK55VD.411:bd03/11/2013:svnASUSTeKCOMPUTERINC.:pnK55VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnK55VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: K55VD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.45-2ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2~git20130628.g6b676e6-0ubuntu0+mir1-jenkins83saucy0
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2~git20130628.g6b676e6-0ubuntu0+mir1-jenkins83saucy0
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3+xmir1-0
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0+xmir2504-0~saucy1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.9+xmir5862-0~saucy1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.8+xmir2338-0~saucy1
xserver.bootTime: Sun Jun 30 11:20:29 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.13.3+xmir1-0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Dave (damies13)]

I am experiencing issues with this same video card, my brightness is stuck on minimum brightness since upgrading to 13.10 (in 13.04 it was stuck on full brightness which was more usable)

I am using a Dell XPS 13 (1080p), if you need more details, let me know what you need and I will do my best to get you the details.

[Dave (damies13)]

OK with a little playing around I found that when I use the function keys to adjust the brightness the screen doesn't update but will used that setting after a reboot. i.e. set brightness to minimum and reboot brightness = minimum, set brightness to maximum reboot brightness = maximum.

After a few reboots and some trial and error I got it at a comfortable brightness.

Hope this helps someone.

[Daniel van Vugt (vanvugt)]

XMir 1.0 (the old Xorg extension) is now deprecated and is not being maintained or fixed. It is replaced by the new 'Xmir' binary (package 'xmir') introduced in Ubuntu 15.10 wily.