2nd HP 24 mh Monitor will not connect after update to Sonoma 14.7.1

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Level 1

9 points

2nd HP 24 mh Monitor will not connect after update to Sonoma 14.7.1

M3 13 inch MacBook Air. Was running two HP monitors as external displays. Ran them both through a dongle and one of the USB ports. Absolutely no problems. After updating to Sonoma 14.7.1 the second monitor is no longer recognized. I checked all cables, dongles, and ports on the M3. One monitor will connect. I can switch ports and monitors and it still connects. Downloaded latest version of DisplayLink. Changed connection permissions to ask always. Asks for everything but the 2nd monitor. It will connect to an Acer monitor and also to Home Theatre no problem so it may be a HP specific issue? Was going to upgrade to Sequoia but now only if it fixes this problem. Not enthusiastic about downgrading to 14.6.1 but have Time Machine backups to do that. Any help with a fix that works would be appreciated.

MacBook Air 13″, macOS 14.7

Posted on Nov 19, 2024 5:16 PM

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Answer 1

Nov 20, 2024 2:55 AM in response to tapedoctor

Since you are using a DisplayLink-based “workaround”, you may now be dependent on the vendor of the “workaround” device, and/or on Synaptics, for updated software that will let it work again. This is one of the potential drawbacks of using such “workarounds.”

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Answer 2

tapedoctor Author

Level 1

9 points

Nov 21, 2024 7:53 AM in response to Servant of Cats

So did you spend hours searching the web to find this jewel of an observation or did you think about it all by yourself? Thanks for nothing as the saying goes unless you have a solution that works.

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