Rotating external monitor on 10.10.2 also rotates LCD of laptop

Hi,
I am using Late 2013 15" Retina Mackbook Pro with OS X 10.10.2. I bought a DELL U2414H as my external monitor today. However, when I tried to rotate it by 90 degrees, the LCD screen of my MBP rotated as well. I am connecting U2414H to my MBP with display port and enabled DisplayPort 1.2. The resolutions on both screen are set to the default value. Please help me with it.
Best,
Alan

What happens if you specify that Displays have Separate Spaces?

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I would suggest looking at the monitors manufacturer's web site for possible drivers or software.
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Moderator Note; please update your profile with your correct country location as per the forum rules. Products, options and services vary from market to market. Knowing your location helps us help you
Message Edited by andyP on 11-06-2008 11:26 PM

I would suggest looking at the monitors manufacturer's web site for possible drivers or software.
I read an article from a very old OS "how to" that if you held down the option key while opening System Preferences and continued to hold the option key while you selected Displays, you might get an an option to rotate. I can't test it since I don't have an external monitor.

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(EDIT: resized. In case of wishing to read full images, just take the "resized/" out of the URI)
However pretty the full screenshot looks like (... I just mean that even if it looks like the second monitor is working), the monitor remains blank.
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#!/bin/sh
# ~/.xinitrc
# Executed by startx (run your window manager from here)
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if [ -d /etc/X11/xinit/xinitrc.d ]; then
for f in /etc/X11/xinit/xinitrc.d/*; do
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done
unset f
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exec ck-launch-session startkde
# exec gnome-session
# exec startkde
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# ...or the Window Manager of your choice
The laptop's model is Toshiba Satellite L775d. I'm not sure what other information should be required in this situation, but I will be loving to give anything that isn't compromising
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Last edited by Mamsaac (2012-03-16 12:24:27)

Thank you for your response!
# xrandr
Screen 0: minimum 320 x 200, current 3040 x 900, maximum 8192 x 8192
VGA-0 connected 1440x900+1600+0 (normal left inverted right x axis y axis) 410mm x 256mm
1440x900 59.9*+
1280x1024 75.0 60.0
1280x960 60.0
1152x864 75.0
1024x768 75.1 60.0
832x624 74.6
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
LVDS connected 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
1600x900 60.1*+
1440x900 59.9
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
I wondered the same. I initially only used KDE for it (that's how it worked in other distros, but I'm guessing Fedora and Kubuntu have way more stuff on top). I moved to xrandr later after searching for options and I did select "Ignore" when KDE asked me to configure and just went ahead with xrandr. The same still happens.
Thanks, I hope I gave the right information.
EDIT: Adding some extra information. I tried rebooting with the CRT cable connected. When the kernel initiated its loading, the messages only appeared on the external monitor. It was afterwards (it was pretty quick, but I will assume it was when radeon's modeset hit) that the external monitor went blank again and, in that situation, the laptop's monitor went blank (so none of the two monitors worked... and I was so hopeful!)
Last edited by Mamsaac (2012-03-16 12:14:51)

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