In a previous post I noted that I can not get my external monitor to work at the correct resolution with my new MacBook Air. I'm wondering tho, if it makes a difference if I connect with an HDMI adaptor vs. a VGA adaptor, which is what I've been using. I've tried hooking up two different monitors with the same results--either a stretched picture or compact picture that doesn't use the entire screen. Please advise.
I'm afraid not, only that HDMI is practically impossible to troubleshoot. It either works or it doesn't, and there isn't much you can do when it doesn't.
Even early model MBAs ought to be able to drive 2560 x 1600 so 1920 x 1080 certainly ought to work. Is it possible the Thunderbolt to HDMI adapter is limiting its resolution?
I happen to know a MBA has no trouble driving a 1920 x 1080 projector. The adapter I'm using is a $6 one from Monoprice. They don't happen to sell that one any more but I'd imagine almost anything should work.
(Update: I believe this is what I'm using: Monoprice Mini DisplayPort 1.1 to HDMI Adapter with Audio Support, Black)
Check your HDMI cable as well as the monitor's settings, if there are any to inspect.
There are indeed three different variants, and you will want one that doesn't constrain your video output. Which model MBA is yours? To find out read Identify your MacBook Air model - Apple Support.
That one looks perfect. If the monitor still refuses to provide the resolution you expect at least it will be one less potential factor.
It could be the adaptor. I am noticing that it blacks out intermittently as I'm working. I ordered a better HDMI cable, so maybe that will help. Also, when looking at these cables on Amazon there are different Thunderbolt options--1, 2, and 3. I have no idea what I should order. With Mac changing these adaptors all the time, I don't know what is the best option. thank you for your input John. I appreciate it!
Thanks John. This discussion has been very helpful. I have a 2019 MBA and I ordered this cable this morning-- https://www.amazon.com/gp/product/B075V5JK36/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Hopefully, it will solve my issues. Thanks again for all the info! I'll let you know on Friday if it works.
Thank you John. It actually improved the resolution, but it's still a little pixelated, but not sure how to get it crisp--I'm also using a Thunderbolt adaptor for the HDMI cable. According to my monitor, the optimal mode is 1920 x 1080 but that isn't an option in preferences. Any advice?
VGA resolution is rather horrible. It's not something anyone is likely to consider acceptable today. Using a display with a genuine HDMI input will provide the greatest resolution.
connecting external adaptor: HDMI vs. VGA
