The usual method of using Quartz Debug doesn't seem to work anymore.
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Running
nd restarting worked for me:
I only tested it with the internal display of an iMac though. |
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actually it works on external displays such as TVs, but the list in System Preferences is limited. you can try two things:
the first one didn't work for me as it kept only showing "tv friendly" resolutions (720p, 1080p and 1080i). the second did indeed show 960x540 HiDPI i was after for my tv. |
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It seems to me that OSX is preventing TVs (or the other way around) from using HiDPI on non-scaling mode. For example if your TV is 1080p, the 960 X 540 HiDPI won't work, but 1280 X 720 HiDPI mode will (but it will be blurry because it is really running 2560 X 1440 on a 1920 X 1080 display). |
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