On my 13-inch Retina Mac from early 2015, I've experienced some unexpected problems after upgrading to macOS 12.7.1. The system is reporting an issue with volume hash values not matching, and the WiFi connection drops frequently. General performance has become sluggish with occasional hangs. This particular macOS update seems to have introduced some bugs that are impacting the usability and stability of my system.
ZhengGao
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upgrade the macOs to Monterey 12.0.1(21A559) from Mojava, when i login in acoount to Destop, the trackpad not working, so i reset the PRAM/NVRAM and SMC, it don't work as well.
i create a new root account and login in, the trackpad work well, but when i restart the system , the trackpad still not working.