occams_cat

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  • M1 Macs not enabling Retina mode with certain monitors, developer says

    occams_catoccams_cat
    brockgs said:
    I just finished exhaustively testing everything from some old 1080p monitors up to my 4k and 5k norming every day monitors, culminating in my Samsung Oddysey G9 monitor (49" UltraWide 5120x1440) and can't say I've seen the problem except when using "older" cables from a couple years ago. For example, initially when connecting my 16" M1 Max MBP to the monitors, using HDMI cables, yes, there were definitely fewer resolution options and fewer refresh rate options. When I purchased a $30 USB-C to DisplayPort cable off of Amazon, suddenly I saw and had access to every resolution my PC testing workstation saw and I was able to run that monster 49" screen at max resolution, 120Hz without a hitch. I won't claim to have an amazing database to reference for this, but I can say with 100% certainty that ensuring you are buying new, HIGH QUALITY, cables, and using either direct USB-C, Thunderbolt, or DisplayPort connections on monitors will always give you the same and often far greater options and quality. :-)

    Here's a link to a little graphic I created over a Flight Sim forum a couple weeks back where I was starting to help people understand the performance of the M1 and M1 Max and monitor resolutions...etc https://forums.x-plane.org/index.php?/forums/topic/256791-chart-screen-resolution-and-fov-v1/
    I had to register just to say that I have the same Samsung Odyssey G9 49" 1440x5120 QHD monitor & a BenQ 4k photography monitor and since the Monterey 12.0.1 update my M1 MacBook Air will no longer output anything higher than 1920x1080. The M1 Air worked perfectly for 6 months on Sierra OS, using both high quality usb c to DP and usb c to usb c cables. It also scaled perfectly with el cheapo HDMI to HDMI via a usb c adapter. It all borked-up when apple pushed out Monterey.  I would suggest that this problem is not cable related, rather driver related. Either way, it's a huge PITA for everyone. I've been talking with Apple support for a week now and the only 'solution' they can offer is to roll back the OS!
    williamlondon