MBP 13 2020 won't recognize USB devices from TB dock after sleeping and connecting to the dock. After unplugging the dock MBP crashes and does SMC reset

These are all brilliant suggestions, but why isn't Apple doing anything? I just posted to twitter: Anybody out there remember “I”m a Mac”/“I’m a PC”? Do you feel like the tables have turned? Random reboots, ‘printer not connected’, wonky USB C ports, … A loyal Mac user for 20+ years (heck my 2ci is still in the garage), I’m very disappointed @Apple. 

also 'kextstat' command in the Terminal shows some interesting info to work with.

And free util KextViewr may be useful https://objective-see.com/products/kextviewr.html as well. It can also export results as JSON file - together with checksums as well. So it may be used for comparison as well.

All checksums differs. Every folder is different. Bummer. Seems like it gots different signature every single time or maybe on every macOS installation :/

Gone are the times of Snow Leopard hackintosh, which could inject kexts from different minor version of OS X.

Guess we gotta wait for Apple fix after all.

Thank you. There is the difference. hhttps://www.diffchecker.com/hqhWoidB

More reasonable than the plain folder checksum, but still nothing obvious unfortunately. CTRL+F on 'thunderbolt' shows same versions of thunderbolt kexts, "AppleThunderboltEDMSink" seems to be missing on the older macOS - but that's all I could find about thunderbolt. But it may be caused by different kext of course or it may be totally different issue. I'm just thinking of kext, because those are kernel extensions and so essentially drivers for Mac HW.

yeah definitely. This should get more interest, because it lasts too

long and affects everyone with Thunderbolt hardware and 2020 Macbook.

Someone with HN account with few positive points, so it gets interest?

Nancy31 wrote:

These are all brilliant suggestions, but why isn't Apple doing anything? I just posted to twitter: Anybody out there remember “I”m a Mac”/“I’m a PC”? Do you feel like the tables have turned? Random reboots, ‘printer not connected’, wonky USB C ports, … A loyal Mac user for 20+ years (heck my 2ci is still in the garage), I’m very disappointed @Apple. 

Same here. It may be actually my last Apple product. Already switched to Android after being loyal to iPhone many years and 2020 MBP may be as well my last MacBook. Apple got me with its "it just works". However it does not seem to be the case anymore. I saw and played with latest Windows 10 a little bit and it's actually great!

The tendency of Windows goes up - Windows 10 with Linux subsystem is great actually. However macOS goes down in my opinion. I liked older OS X better. It definitely worked better. Same for the MacBook hardware - don't get me started with the keyboard and screen issues of the previous MacBooks!

I agree, it is very disappointing, especially with the premium price we pay, compared to the PC world, what is challenging to me, is that the eco system integration that Apple provides me with the phone, watch, laptop and tablet is non existent with Windows and Android, they have something but it is still on early stages.

I have a 2018 MBP 13" as well, the issue with the keyboard is bad, even though they extended the warranty for the keyboard, they will replace it with the same type, so sooner or later, the replacement will fail again, I had mine already replaced. I would say, good intentions by extending the warranty, poor solution.

I normally leave my Mac plugged in to my dock with the dock powered off. (I switch between the CalDigit TS3 and the Anker PowerExpand Elite) This morning when I woke my Mac, the thunderbolt ports (all four) were only using reception scripts (insofar as the ports themselves would not transmit to the dock, to the attached peripherals, but they would receive A/C power just fine). When performing a restart the Mac hung and crashed, following that with a new boot cycle.

The error messages reporting kernel issues are pretty spot on. I get them almost everyday as well as one pertaining to the thunderbolt controller. Kernel issues are onboard AND so is the thunderbolt controller - both functions are IN the CPU. At first, this made me think that there could be a glitch on specific cuts of Intel Gen 10 that weren't up to snuff and were the cause. But not everyone in this conversation has 10th Gen. Then its simple. Using some deduction, the issue seems to be firmware. While some may have noticed that older versions of MacOS lessen the symptomology of the issue we are investigating, the older versions most likely don't ever access the overclocking and core functions of the newer chips in any sense, and therefore wouldn't accidentally trip the over voltage on the controller on the chip.

It's not software. It's not hardware *(well sort of). It's firmware.

What is the Boot ROM version on your computer? You can check that in System Information, Hardware section, If iBridge start with 18. that is the Big Sur firmware, if it is 17. It is the Catalina firmware, I found that the problems happens to me with 18. Firmware, because I had installed Big Sur, then went back to Catalina, and the firmware doesn’t get reverted back to a Catalina firmware.

MBP 13'' 2020, 10th GEN i7 with OWC Thunderbolt 3. Catalina 10.15.7.

The behaviour is as described here, and it is annoying. I need to unplug the dock sometimes several times a day, and after re-connecting no devices such us sound card and external disk are detected. (charging works, monitor works and ports used for charging devices - work too).

I can't reproduce restarts. Sometime it does immediately, some other times it takes up to several minutes.

Manual restart with hub connected works, but well, I am expecting a bit more from the machine that is that expensive. What a disaster. I hope this to be fixed ASAP.

Note: I am using this Dock for one and half year now and I never experienced any issues until several weeks ago.

hey,

I've the same problem with a 2020 MBP 13" -i5. I use a TB3 LG UltraFine 5K monitor. It crashes and gives the message ""Intel CrashLog recorded due to unexpected reset". It's really annoying, I didn't find a solution...

Please Apple, solve this !!

I can agree that there are no crashes in the last few hours of using Big Sur Beta 10 with the CalDigit Thunderbolt Dock and the Macbook Pro 13 2020, but my displays connected to the dock are flickering from time to time and my HDD connected to the dock disconnects after a few minutes of using. It seems we have to wait a few months longer and i have to go back to a usb-c-dock, there are no issues till now...

I had the flickering issue as well, I did a Safe Boot, SMC and PRAM reset and no more flickering, something was corrupted after the Big Sur installation, everything has been working fine for the last 24 hours, no Panic Crashes and no flickering, very stable Beta so far.

I have the same problem with my all new MacBook Pro 2020 13" (i5 10th gen, 4 TB3-Ports) with an OWC Thunderbolt 3 Dock. I've tested a "small" USB-C-Hub (just with 1 HDMI-Port and just powering over the Apple Power supply): No Problems so far. I suspect there is a problem with the "big" Thunderbolt Docks with own power supply and own chipsets for multiple monitor setups... Hope they fix it soon. Until fix, i just take my USB-C-Hub and a second USB-C to DP-Cable for 2 Monitors. With this combo, no crashes so far.