Saturday 04DEC2021, posting from East Coast USA.
My previous messages are on Posts #261,280,323,377,387,389 and I’m a newbie so there may be an easy way to find my previous posts… but #261 gives most info.
Machine config, both initial and replacement: MBP 14inch, M1 MAX, 10CPU/24GPU/32GB/1TB
RECAP: virgin machine, OS 12, Safari 2160/4K/HDR… boom, crash, panic, reproducible.
Update to OS 12.0.1, Safari 2160/4K/HDR….boom, crash, panic, reproducible
Open case with Apple…. AC2 used for DFU RESTORE from my M1 MBA….boom, crash, panic, reproducible…..
Returned machine to Apple for replacement
Replacement machine arrived Wednesday with OS12.0.1 already installed… Safari 15.1 (17612.2.9.1.20)…. So .. straight to YT and no HDR available to Safari… enabled the “DEVELOP” menu in Safari and back to YT… no HDR
Safari/DEVELOP/User Agent = Google Chrome Windows… YT 2160/4K/HDR worked…..boom, crash, panic.
Safari/DEVELOP/User Agent = MSFT Edge…. YT 2160/4K/HDR….. boom, crash, panic…
So… basically, 2nd machine straight out of box has same behavior
Enroll in PUBLIC BETA program for Monterey OS.
Install Monterey 12.1 BETA 4 (21C5045a) which included Safari 15.2 (17612.3.6.1.4)
Shut down, reboot, check for updates (none) head back to YT… for more HDR trials
Safari User Agent = DEFAULT…. No HDR on YT
Safari User Agent = Google Chrome Windows.. YT 2160/4K/HDR…. SUCCESSSSSSS… tried for 2 days to make it fail, and I failed…. It worked with every different HDR video that crashed it before…
Safari User Agent = MSFT EDGE… YT 2160/4K/HDR…. AGAIN SUCCESSSSSSS… tried to make it fail, and again I failed…. It worked with every different HDR video that crashed it before…. With Agent EDGE, I got a warning from Safari I was using an outdated profile, but no weird happenings.
SO – Monterey 12.1 B4 with Safari 15.2 was stable, and although I could ONLY get HDR using the non-Safari User Agent, I had zero crashing…. But wait, there is more…
Unenrolled machine from Public Beta…. Used my M1 MBA and AC2…. Did full RFU RESTORE (only way to get back to the official release of Monterey OS) and yep… headed to YT…
Official released Monterey 12.0.1/Safari 15.1/YT with User Agent Google Windows/HDR… crash, boom, panic….REPRODUCIBLE…
So it is clear there is some sensitivity in some machines that makes them unhappy with YT HDR, and it can be addressed by SW update from Apple. I still have NO IDEA if this behavior is caused by HW/FW/SW… but the machine was rock solid with OS12.1B4/Safari 15.2.
I have about 10 days left in my 14day return window (I’m trading in my M1 MBA, which only has a 14day trade-in window) so I’ll play a little more, but I’m feeling like I will keep this HW and just wait for the official release of OS12.1/SF15.2….
Open to recommendations from the Forum..