Blackmagic Forum

In release notes it's written, requirements "macOS Catalina or later". I run it on latest Big Sur = within requirements. Any application which tries to connect through my Decklink Mini Monitor 4K will freeze! = I cannot use my Resolve Studio at all Sure I allowed the app in Security & Privacy.

Note: I upgraded to Big Sur today because I had insane amount of Resolve crashes daily, in hope it will help. Now thanks to Apple its not anymore possible to install Catalina crap anymore on my 2019 Mac Pro. So I have nice $24,000 paper weight on my table! So be aware before leaving that Catalina crap. 40 Resolve crashes daily are still better than not able to run it at all!

When we say "or later" we mean a later released and supported OS.

When Big Sur is released, we'll hopefully have a newer Desktop Video version to work with it, if that's required. Or the release version may work with 11.6.

Well, thanks for your reply. I would prefer to read clear requirements instead of guessing what you could mean by that. Of course people should not rely on Beta versions, that's obvious, but that was my last shout of hope. So let's go back to crappy Catalina and experience 40 Resolve crashes daily on my 2019 Mac Pro

If you have so many crashes the FAQs describe how you can report them with logs so a dev can take a look.

Thanks for info. Now I'm reinstalling whole system and everything from scratch. If it will be crashing still, then I submit it.

Do we have any update on this yet? Apple released Big Sur Beta 8 this evening. I will be testing again to see if the spinning wheel issue on OBS is fixed but is there any update on when we will see a Blackmagic update?

Tried Big Sur Beta 8. No change. Tried BMD Media Express and Zoom. On a UltraStudio Recorder 3G. Cursor just spins until you unplug device then immediately returns to normal control. @BMD do you know what the issue is that is causing this? 8 Betas in would suggest this the OS is well on its way to GM release.

I would add at this point, that since the issue you are asking about is Desktop Video related, and not Resolve related, this is not the best forum to bring it up in. It would be better placed in the Post Production forum.

Dwaine Maggart wrote:I would add at this point, that since the issue you are asking about is Desktop Video related, and not Resolve related, this is not the best forum to bring it up in. It would be better placed in the Post Production forum.

You said it's Desktop Video related, I could not know that when I created this thread. I had simply problem to run my DAVINCI RESOLVE on Big Sur with my Decklink, that's why I had to ask in forum here.

Okay so Big Sur has now released and I’m expecting many many users will overnight have issues with desktop video.... can we at least confirm that an update is in the works?

Never upgrade a production system on the first day!
My automatic updates are always off for a reason – working with computers for more than forty years.

Yes I’m very aware of why we shouldn’t upgrade straight away however Catalina had some serious bugs in so in my case I had no choice, my eGPU system was unusable. It’s still poor for a major company to not even begin testing the new update knowing many will update.

I upgraded to Big Sur (I know, I know..., but no current project going on, so why not). Desktop video stopped working. Now I am trying to install driver 11.6 but couldn't get passed the security thingy where it asks me to press the 'allow' button in system prefs/privacy and security. Finally, I found a trick where I needed to hold the option key running the installer in order to bypass the security checks. So I could run the installer, but still no dice - neither ultra studio nor mini monitor is recognized by my system...

Just wanted to see whether any of you got it working with the newly released big sur...

11.7 update for Big Sur was released today
https://www.blackmagicdesign.com/suppor ... d-playback

So Big Sur 11.1 + new Desktop Video 12 + Resolve 17b and 17.1b still not working That's insane, I posted my thread 6 months ago and problem is still not fixed??? What the hell... Very sad...

Is the issue still as originally reported? That if Resolve or Media Express try to access the Mini Monitor, the app freezes?

Since your original report, we've had a few more reports of the same. In fact, it happened to me when I upgraded from Catalina to Big Sur on my iMac.

After much testing on my system, we were unable to figure out an easy solution. Something deep in the guts of the OS is getting into a bad state that affects Desktop Video. Came to the conclusion that the only solution was a clean install from scratch of Big Sur.

I've since helped a few other people with this, and an OS clean install was the solution.

If you have lots of space on your system drive, you can make a new partition/volume, and do a clean Big Sur install to that, and then set that as the boot partition/volume in Mac Preferences - Startup Disk. Then install Desktop Video to that. You should be able to run the previous Resolve install from the original partition/volume.

If you don't have lots of space on the system drive, then you'll need to wipe it and do a clean Big Sur install and reinstall your apps. If you have to do this, make sure you have your Resolve database(s) backed up, and create project export .drp files for any important projects. Because I'm paranoid, I would make an image backup of the system drive first, using something like SuperDuper! or Carbon Copy Cloner. That way if it turns out there was something important on the original drive that didn't get backed up, you can still recover it.

I wish I had a better solution, but at least it is a solution.

Today I was so stupid after 6 month after my initial post to upgrade to Big Sur when I saw the Desktop Video 12 with Big Sur support released week ago. What a terrible surprise awaited me. Thanks God I wasted only few hours finding solution - your Desktop video put some **** into specific folder which I don't remember now in Library - 3 leftover files needs to be deleted, boot to recovery, disable SIP, delete files, enable SIP, then it works. But why the hell we need to waste time with such a crap? I didn't bought two times Studio version to get so insane problems!

I'm now on different computer so I don't have access to that, but if I will not forget tomorrow I can post the details about the solution I've found in another thread post. Hard to guess if to blame Blackmagic or Apple for this problem.

@Kate: Thank you very much for your post above. I did a search to see if I could find the solution you mentioned. I did. It's here:

viewtopic.php?f=4&t=121992#p699837

Thanks also to Edward for coming up with that solution. Not sure how he managed that, but happy he did.

I was able to reproduce the scenario on my system again, and verified that Edward's solution worked for me.

So, anyone that does a Big Sur update, and then finds that Resolve hangs instantly when they play the timeline with a BMD I/O device connected and selected, or see Media Express hang a few seconds after playing a clip, Edward's solution at the link above appears to be something to try. While the process is a bit painful, it's probably easier than doing a clean Big Sur install from scratch, which was our previous solution.

Just to note, this process is ONLY if Desktop Video sees your I/O device, and you have the playback issues mentioned above. It's not for a scenario where Desktop Video does not see your I/O device at all.

@Jamie

What was your problem with Catalina?
I'm running 17 beta 7 on my Mac mini under Catalina just fine (and I have no intention to upgrade).

Recopying instructions from user EAMoore which solved my problem:
Here were the steps I took:
1. Uninstall Video Desktop using the uninstall program.
2. Boot into Recovery Mode (command-r)
3. Open Terminal to disable SIP: At the prompt enter this command: csrutil disable
4. You will get a message that SIP has been disabled.
5. Then enter reboot.
6. Once you reboot, open Terminal and force delete the kernal extensions. In my case, the commands looked like this for the three extensions:
sudo rm -rf /Library/StagedExtensions/Library/Extensions/Blackmagic_Multibridge_Driver.kext
sudo rm -rf /Library/StagedExtensions/Library/Extensions/BlackmagicIO.kext
sudo rm -rf /Library/StagedExtensions/Library/Extensions/BlackmagicUsbIO.kext
7. After deleting the extensions, I rebooted in Recovery Mode (command-r)
8. Open Terminal to enable SIP: At the prompt enter this command: csrutil enable
9. Then enter reboot.
9. Once rebooted, install Video Desktop. I used the Beta, 12.0b1
10. If Desktop Video then says "No Desktop Device Detected" you have to go to System Preferences>Security & Privacy>General and the select "App Store and identified developers” and then “Allow” Blackmagic Design in the pop-up window. You might have to restart after that.