I've updated my M1 Mac mini to 12.3 and immediately lost video signal via USB-C. HDMI works, but neither USB-C socket sends video signal to my monitor. Everything worked just fine right before the update.
Anyone got a way to fix it?
Mac mini 2018 or later
Yes, usage of non-Apple displays seems to be broken - again. I have the same issue with my 2018 Mac Mini and a LG monitor. Neither USB-C nor HDMI work.
No, it seems to affect several brands of non-Apple displays.
From the number of 12.3 update issues on the board, something is not right and we need to let Apple know.
I meant the bug report form.
Ah' got it, just use 12.2.1 and describe the issue in the comments box.
That’s mine, too. But there are similar reports regarding Samsung monitors.
IIRC, 12.2 was plagued with this problem, too (at least in the betas?). I just can’t understand how they would reintroduce this bug.
Luckily, I still have an old Thunderbolt display as a second monitor, which now gets primary monitor duties - again.
Similar posts have appeared here. Maybe it’ll get fixed in the next release, maybe it got “fixed” so it works per the spec (one HDMI mandatory for multiple monitor configurations). Good luck!
Thanks!
However, it is my only monitor. So unless the primary HAS to be via HDMI (but why?), something got broken.
Looks like it! We should find out in the new release, whenever that is…🤞
Maybe an issue specific to LG monitors?
What’s yours? I haven’t seen a non-LG yet, maybe you can get that started 😉.
Mine's LG 27UP850-W
So looks more and more like LGs taking the hit. Samsungs? Not here (yet). Dells? No problem!
Had no problem with that on 12.2.x
I've ditched Dells when I learned what they do to sharpness when used with Macs (due to lack of HiDPI support)
M1 mini: after 12.3 upgrade can't use monitor via USB-C
