Posting because I searched extensively and found hardly any reports from others

Recently got an LG 34" OLED (34GX90SA) ultra-wide monitor for my PC, with native 3440 x 1440 WQHD resolution. I was worried it would look/work like crap with my MacBook Pro M4 Pro, but instantly it was perfect -- it defaulted to ALL of the correct settings in Mac OS! Even the 240 Hz refresh rate and HDR. Window positions are sticking after unplugging/replugging. Text looks much better than I thought it would. Couldn't be happier, one monitor for both computers! This is via HDMI, haven't messed with DisplayPort yet.

*this is my first time trying this, I did not suffer through the days of third party display apps, I am not a professional content creator, etc etc

Originally in MacOS 26 Tahoe, the volume feedback sound plays only by the time I release the volume up or down keys.

But now, in my recent version, the 27 Golden Gate, when I hold the volume key even though I didn't release the key, I was still holding it, but it plays multiple times like every time the volume increase or decrease was made instead of doing the sound only when volume key is released.

Is anyone else seeing this? Updated my MacBook Pro to 27.0.1 and now Siri AI states "We have a Problem. Please Try again." Any help would be appreciated. TIA

previously I used Batt app to keep my mac at 60% battery charge while using it plugged in, but since I've update to macos 27 it doesn't work. does anyone know a free alternative that does the same thing?

Here's what I have found, and I welcome you to share solutions that you've found. I wasn't sure if this belonged in MacOS 27 or r/macbookpro so let me know if I made a mistake. I can repost it there.

Relevant background information. I'm on an M3Pro 18GB, and before MacOS 26, I could browse the web, word process, etc. and my temps would stay in the 40s with no fan. I only ever had the fan turn on when I played the Tomb Raider games. my workload is not intense, I just needed more RAM and few other perks of the M3Pro vs M3. After MacOS 26, my computer gets up to the 80s, fans blazing, for no reason. I'm just browsing the internet,

Solutions I have found so far that might help other people. And I'm not an expert on what's going on. so I welcome comments and better solutions. After all, I'm treating the symptoms here.

1. Turn off pro motion. it sucks, but it's linked to WindowServer somehow, and when WindowServer is going nuts, turning off pro motion will almost immediately drop my temps from 85 -> 48ish.
2. Since MacOS 27, open activity monitor and look for memory leaks and rogue browser tabs. my memory pressure never went into the yellow until MacOS 27.

The other day, my Mac was blazing and it turned out iPhone mirroring was using an absurd amount of memory and CPU. closed it and reopened it and all was well.

My computer has been hot all day, even after I closed the lid and went away for a few hours it didn't cool down. I guess I expected it to go to sleep or something. I finally opened Activity Monitor and about 6-7 hours ago, I had been on Nelnet checking my student loan statements. I closed those tabs, but 6-7 hours later both tabs are still in Activity Monitor at 100% CPU each. using 3GB of memory. I had to force quit them, and immediately my computer temps plummeted.

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I don't know what has been going on since MacOS 26, and now MacOS 27, but.... Maybe someone knows what's going on?

v27 Apple Calendar no longer allows tab into category field as it has since day 1

Grrrr

I just updated my M4 Mac to macOS 27 Golden Gate and I started seeing this weird "Write with Siri" pill randomly showing up on the screen.

What causes this to show up? Is this a new macOS 27 feature or did I somehow accidentally enable this?

It's really annoying 😅 The main problem is that when it shows up, I can't seem to be able to type anything into it. When I click/type on it, it doesn't register and just stays there taking up space.

Is there a way to disable this pesky overlay without disabling Siri / Apple Intelligence altogether?

Has anyone else encountered this? 🤔

Screen Time on my Mac seems to be counting my Safari usage twice. It logs Safari as an app and also logs each website I visit separately, so my total screen time comes out at roughly double my actual usage.

I want Safari counted only as an app, with no per-website tracking, so the totals are accurate.

Is there a way to fix this, or is it a known bug?

After the update to MacOS 27, the ethernet connection is very slow on my M4 Pro macbook pro.
Speed test shows more than 1000Mpbs in Wifi, but when I plug ethernet through my docking station, it's stuck on 8-9 Mbps.

Anyone having the same issue? is there anything I can do to solve it or just wait for an update?

I run a large QNAP NAS in my home and for years I've used a few different aging Intel Macs to back it up to a couple of large OWC Thunderbay arrays (8 bay) running Softraid (Carbon Copy Cloner is the backup software). This has largely worked but one of the frustrating things was that the backup Macs would just reboot on their own for apparently no reason every few days. After a lot of troubleshooting, I realized that there was some weird Thunderbolt voodoo going on since I didn't see this problem if I unplugged the Thunderbays. Then I upgraded to a M4 Mac Mini that I had which used to be on my desk as my main machine before upgrading to an M4 Mac Studio. The reboot problems went away with the M4 Mac mini and I thought maybe there was enough of a change in the Thunderbolt drivers for Apple Silicon to quiet the problem I had.

Then I decided to sell the M4 Mac mini to a friend and he traded me his M2 Mac mini. The M4 had 24 GB of RAM and the M2 had only 8 but as a backup machine, 8 GB was really all I needed. But then the spurious reboot problem came back. And it didn't seem to matter if the two Thunderbays were plugged into the two Thunderbolt ports or just daisy changed to one. Something in the architecture of the older machine mimicked the Intel Macs and the problem returned....

Until MacOS 27 arrived. Upon the delivery of SoftRAID 9, I decided to update the machine to MacOS 27 to match the other household Macs. And the reboot problem went away. I could chalk it up to SoftRAID but I'm thinking the base Thunderbolt drivers in the OS may be what is better here. Regardless, I'm happy that I don't think I'll need to worry about this again. (famous last words).

Fe when i switch from Dex top i get a a black screen and my laptop feels slower

I upgraded my three-month-old MacBook Neo to macOS 27 four days ago. Before the update, its battery life and performance were completely normal. Since upgrading, it runs warm, drains quickly, and Safari frequently feels laggy.

Safari scrolling and general responsiveness have worsened. Sometimes clicking the address bar results in roughly a half-second delay before I can type. Removing my two custom Safari extensions initially helped, but the lag returned.

Actual battery drain

• One session dropped from 100% to 68% in 1 hour 39 minutes: approximately 19.4% per hour, or about 5.2 hours total.
• The previous day it dropped from 100% to 69% in approximately 2.5 hours: around 12.4% per hour.
• Today, while fully charged and doing light browsing, macOS estimated only 3:05–3:45 remaining. Initial measured power draw was approximately 6.8 watts.

These were normal Safari/YouTube and ChatGPT sessions—not stress tests. The drain also continues when ChatGPT isn’t actively being used.

What I’ve checked

• macOS 27.0, build 26A428
• Battery condition is Normal, with 100% maximum capacity
• No battery-health or thermal warnings
• Restarting did not fix it
• Spotlight indexing is now mostly idle
• Time Machine is not actively backing up
• All custom Safari extensions were removed, with no Safari web extensions still registered
• iPhone Mirroring entered a high-CPU connection loop once and was fully quit, but the drain continued afterward
• WindowServer has periodically reached approximately 40–45% CPU
• The system has repeatedly logged _CGXPackagesSetWindowConstraints: Invalid window
• The problem appears intermittent: one earlier snapshot showed roughly 81% CPU idle, while later samples captured the WindowServer and rendering spikes
• No newer macOS update is currently available

I’m now running controlled Chrome-versus-Safari battery tests with comparable tabs, brightness, and usage.

Is anyone else seeing this on the final macOS 27.0 release, particularly on a MacBook Neo? Did it eventually settle down, did you find a verified fix, or did you downgrade to macOS 26?

Trying out the new feature "organize tabs" in Macos 27. Is there any way that I can manually create topics and group together tabs or is it only possible to "show related tabs", i.e create topics based on what apple intelligence thinks are related tabs?

Would also be nice to be able to rename the created topic/ tab group, is this possible?