I recently bought a BenQ PD2500Q Display with a native Resolution of 2560 x 1440 px. I'm trying to hook up my old MacBook Pro 15" mid 2010. As I'm also using this MacBook with the Apple 27" LED Display (pre-thunderbolt) via displayport I can't see why the BenQ Display isn't showing me the same 2560 x 1440 px in Monitor settings but is maxed out at 1080p. I tried connecting it with a mini Displayport to Displayport Cable, that is said to be displayport 1.2 compatible and therefore support up to 4K (see link for details: https://www.amazon.de/gp/product/B01LXW0GQI/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1)
I also tried connecting it with an active minidisplayport to HDMI Adapter (https://www.amazon.de/gp/product/B071X692K7/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1), since the BenQ Display has mini DisplayPort, Display Port and HDMI Inputs, but also with no luck and a max of 1080p. I succesfully got full resolution with a 2017 MacBook Pro via Displayport and HDMI, but I need to get my old MacBook Pro to work on that Display.
I am really stuck here since I have no idea why my Apple 27" Display is working at full 2560 x 1440 px resolution via DisplayPort and the BenQ Display doesn't. I also contacted BenQ support but they say that since the Display works fine with a newer MacBook the cause should be between the Mac and the adapter and I should contact Apple. Since support has expired a long, long time ago, i don't expect Apple will help me on this one.
So any ideas and help would be highly appreciated.
THX
I also tried connecting it with an active minidisplayport to HDMI Adapter (https://www.amazon.de/gp/product/B071X692K7/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1), since the BenQ Display has mini DisplayPort, Display Port and HDMI Inputs, but also with no luck and a max of 1080p. I succesfully got full resolution with a 2017 MacBook Pro via Displayport and HDMI, but I need to get my old MacBook Pro to work on that Display.
I am really stuck here since I have no idea why my Apple 27" Display is working at full 2560 x 1440 px resolution via DisplayPort and the BenQ Display doesn't. I also contacted BenQ support but they say that since the Display works fine with a newer MacBook the cause should be between the Mac and the adapter and I should contact Apple. Since support has expired a long, long time ago, i don't expect Apple will help me on this one.
So any ideas and help would be highly appreciated.
THX
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