DELL U2312HM: set display brightness and contrast from Mac

[Caesar_091]

Hello,

is there a way to set/modify brightness and contrast levels of my DELL U2312HM via Mac OS as I do with my primary display (Apple Cinema Display 23" HD). I found a windows software (softMCCS) to that and I was wondering if there is a solution for Mac too.

I'm actually using it with a DVI cable and a DVI to DP adapter (so it is connected using display's DVI port and video board's DP port). My video board is an ATI Radeon HD 5870. Will a different connection change something? HDMItoDP? DVItoDVI?

 

[cdf]

You might want to take a look at this: https://github.com/kfix/ddcctl.

 

[Caesar_091]

Thanks!

I've started from that link and arrived to https://github.com/jontaylor/DDC-CI-Tools-for-OS-X and https://github.com/superduper/BrightnessMenulet that are both working with my preliminary tests.
[doublepost=1478021324][/doublepost]I'm now trying to play a bit with ddcctl... I've successfully compiled it but I can't get ti to work.
This is the syntax this tool is asking:

$ ddcctl -h
2016-11-01 18:24:45.529 ddcctl[7897:742901] D: NSScreen #69478745 (1920x1200) DPI is 99.00
2016-11-01 18:24:45.530 ddcctl[7897:742901] D: NSScreen #722493132 (1080x1920) DPI is 96.00
2016-11-01 18:24:45.530 ddcctl[7897:742901] I: found 2 displays
2016-11-01 18:24:45.530 ddcctl[7897:742901] Usage:
 ddcctl -d <1-..> [display#]
    -w 100000 [delay usecs between settings]
----- Basic settings -----
    -b <1-..> [brightness]
    -c <1-..> [contrast]
----- Settings that don't always work -----
    -m <1|2> [mute speaker OFF/ON]
    -v <1-254> [speaker volume]
    -i <1-12> [select input source]
    -p <1|2-5> [power on | standby/off]
    -o [read-only orientation]
----- Setting grammar -----
 -X ? (queries setting X)
 -X NN (setting X to NN)
 -X <NN>- (decreases setting X by NN)
 -X <NN>+ (increases setting X by NN)
$

So how should I select my secondary display (#722493132... the one in pivot mode)?

For example this code is not working:

ddcctl -d #722493132 -c 100

...is it my syntax or it is just not working on my config?

TIA

 

[cdf]

Try ddcctl -d 1 -c 100 for one monitor and ddcctl -d 2 -c 100 for the other.

 

[Caesar_091]

It does works! Thanks