Q: 10.9 (Mavericks) External Display Problem
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Feb 17, 2014 2:01 AMby m_Kizzo,I can confirm the same issues using a 15" MBP with a Thunderbolt Display and an HP LA2405x daisychained through a WD hardrive. After upgrading to Mavericks I had a default of 1080p resolution on the HP monitor and Alt clicking gave me only non-native resolutions that put the picture half off the display.
Switching from a VGA adapter to a DVI adapter fixed it for me. Now running full resolution on both screens (1900x1200 on HP + 2560x1440 on TBD).
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Feb 25, 2014 4:57 AMby i_am_ric,I tried all the "fixes" - nothing worked. Scaling wasn't a solution. 1280x1024 SwitchRexsX gave me a blurry screen that was a lower resolution the monitor showed before. a fuzzy 1920x1084 I was on the phone for hours talking with several Apple support people - all of them said they never heard of this problem (until I had them look at this thread).
Dec 31, 2013 I brought home my brand new $3k 2013 MacPro, only to find that when I connected it to my lovely HP LP30665 30" monitor either the "Best for disply" or "Scaled" resolution was 1280x1024. My icons were the size of a baseball. There are only 3 DVI ports on the monitor, so HDMI wasn't an option. I purchased a DVI/mini DisplayPort adapter to use with my existing DVI/DVI cable - gave me a resolution of 1280x1024. I purchased a DVI/mini DisplayPort 6' cable - gave me a resolution of 1280x1024.
But finally after 2 months I have the resulotion back that I use to have on my 2012 MacPro of 2560x1600!!
Solution:
Purchased a real DVI/DVI/ Dual-Link Cable (I thought I purchased one before, even though it had 24 pins it appearantly either wasn't a real Dual-Link or it was faulty). I ended up with the $10.00 BlueRigger 6' DVI/DVI/ Dual-Link cable (can be seen on Amazon). Secondly, I purchased an Apple Mini DisplayPort to Dual-Link DVI Adapter...for a whopping price of $99.00 (from the Apple store).
AND IT WORKS! 2560x1600 It seems that having Dual-Link is the solution. I'm not sure if this is a solution for everyone but it could be worth a try - I know Apple won't be able to assist. And if it doesn't work, Apple has a 14 day return policy. good luck
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Feb 25, 2014 6:55 AMby Stephan Schmidt,aringa9,
perhaps you'll have your full resolution - but I guess that you can get a 10bit digital signal for the full range of color only connected with the display port (not with the DVI) at your Quato.
Greets from Germany (with the same f.... problem: 1920 x 1080)
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Mar 6, 2014 3:19 AMby David Graeme-Baker,My Mac Pro has one DVI port and two of the Display Ports !
The monitors both work just fine with OS 10.8.5 but when I upgrade to Maverick it all goes horribly wrong.
May try again and tinker with the leads but I don't see why the operating system should have such an effect on the monitor display.
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Mar 6, 2014 4:38 AMby mprPL,I am sorry to find that update 10.9.2 of Maverics does not correct the Maverics bug for high-resolution monitors rotated to vertical (portrait) position which I described here in my posts of 29 and 30 December 2013.
I have tested today HP ZR2740w 2650x1440 px monitor connected via mini-displayPort-to-displayPort cable and in the rotated position (pivot 90 degrees) the only option for "Scaled" I am getting is 800x600 pixels (instead of 1440x2560).
