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A comment on M1 Macs cannot support dual Extended displays through their Thunderbolt 3 ports. Parent comment

Re:M1 Macs cannot support dual Extended displays through the... by matthewdrussell on Thursday January 07, 2021 @10:54AM (#25672406)
16" rMBP Pro with beefed up graphics running Dual LG 5K monitors

When it works, its great which is about 50% of the time. When it doesn't and for no apparent reason, it will often reboot a couple of times (just when plugging in the displays).

Sometimes the banding issue that the M1 Mac owners have described appears on one or both of the displays.

A pretty frustrating experience.

[ Parent | on HN ]
Re:M1 Macs cannot support dual Extended displays through the... by nuggien on Thursday January 07, 2021 @01:08PM (#25674801)
do you have powernap enabled? i had this issue with random reboots when plugging/unplugging displays and disabling powernap fixed it for me.
[ Parent | on HN ]
Re:M1 Macs cannot support dual Extended displays through the... by matthewdrussell on Thursday January 07, 2021 @01:35PM (#25675204)
I do. Just disabled it, thanks for the suggestion.

Already running discrete graphics all the time so no auto-switching.

[ Parent | on HN ]