17.4.2 dual display fullscreen GUI issue

Hi –

In Resolve 17.4 we work in fullscreen mode with dual display setup all the time. But since update to 17.4.2 one monitor become black if we switch to fullscreen. I think it's not a space iussue because "Displays have separate Spaces" is disabled all the time so DR have both displays for the GUI.

Also strange: If we open a floating window in DR like tinecode or waveform we can drag it to the second "black" display and it works. Only the GUI is not showing up!

Is this a Apple or a DR bug or we miss something?

Thanks a lot for help

I use Resolve in full screen + dual screen, and I do have "Displays have separate spaces" enabled (that feature is one of the main reasons I use macOS), and that works great.

I've seen other people posting that they have that option off and it works OK for them, so I'm not sure if that's the cause of your problem. But just to let you know that it does work fine if you enable "Displays have separate spaces". Specifically, in full screen (which since 17.4 is now macOS native full screen), the main Resolve window goes into a full screen space, but the secondary Dual Screen window just goes to the first free desktop on the chosen second monitor. It would be better if both displays used a full screen space, but it still works fine as is.

So unless you're desperate to keep "Displays have separate spaces off" (why? it's awesome!) you could try turning that on and seeing if that solves your problem?

I use Resolve in full screen + dual screen, and I do have "Displays have separate spaces" enabled (that feature is one of the main reasons I use macOS), and that works great.

I've seen other people posting that they have that option off and it works OK for them, so I'm not sure if that's the cause of your problem. But just to let you know that it does work fine if you enable "Displays have separate spaces". Specifically, in full screen (which since 17.4 is now macOS native full screen), the main Resolve window goes into a full screen space, but the secondary Dual Screen window just goes to the first free desktop on the chosen second monitor. It would be better if both displays used a full screen space, but it still works fine as is.

So unless you're desperate to keep "Displays have separate spaces off" (why? it's awesome!) you could try turning that on and seeing if that solves your problem?

Thank you for your advice. But my settings are exactly as you describe and the issue is still here. I have tested both ("Displays have separate spaces" enable and not) before i post our problem here. But i have a closer look on what you write "17.4 is macOS native full screen". Thanks again.

Hmm I'm not sure then. It does sound like it could be a bug.

Both monitors are connected to the same GPU, the Vega II Duo?

I'm on Windows, so perhaps this doesn't apply - but I've run into issues sometimes when both of the Resolve UI pages end up trying to display on the same monitor (this generally happens because I've tried to drag the main Resolve UI window around). The issue is that the Resolve menu bar gets hidden so I can't reset the UI.

The way I deal with the problem is to switch to Resolve's "Delivery" page (Shift+8), which only ever displays on a single screen. This reveals the Resolve Menu Bar which allows me to choose "Workspace -> Reset UI Layout" to get me back to square one.

... The way I deal with the problem is to switch to Resolve's "Delivery" page (Shift+8), which only ever displays on a single screen. This reveals the Resolve Menu Bar which allows me to choose "Workspace -> Reset UI Layout" to get me back to square one.

Hi Sean,
thanks for the hint. Both displays are connected on the Vega II Duo via TB. Now i have thrown away the layout settings and set it up new. Now it works

Thanks guys!

I'm on Windows, so perhaps this doesn't apply - but I've run into issues sometimes when both of the Resolve UI pages end up trying to display on the same monitor (this generally happens because I've tried to drag the main Resolve UI window around). The issue is that the Resolve menu bar gets hidden so I can't reset the UI.

The way I deal with the problem is to switch to Resolve's "Delivery" page (Shift+8), which only ever displays on a single screen. This reveals the Resolve Menu Bar which allows me to choose "Workspace -> Reset UI Layout" to get me back to square one.

I have no problems with the interface on my main 2560X1440 monitor, but I'd like to have the "Full View" display run constantly on a second monitor of the same resolution.

Is this possible? Am I asking for trouble?

I have no problems with the interface on my main 2560X1440 monitor, but I'd like to have the "Full View" display run constantly on a second monitor of the same resolution.

Is this possible? Am I asking for trouble?

Are you talking about the "video clean feed" option? (It's only available in the Studio version).

Or do you want to have a viewer window in the Cut, Edit, or Fusion page display on its own screen?

I find video clean feed works really well and is a great way to see what the end result will look like when you're working on edits (especially in Fusion) with on-screen controls.

Viewers on most of the pages can't really be made full screen, but in Fusion you can get close by using the Dual Display option and choosing the "Big Nodes" Fusion workspace layout. It puts most of the panels on the second screen which lets you make the viewer fill most of the main screen.

I have no problems with the interface on my main 2560X1440 monitor, but I'd like to have the "Full View" display run constantly on a second monitor of the same resolution. Is this possible? Am I asking for trouble?

Are you talking about the "video clean feed" option? (It's only available in the Studio version).

Yes. Thanks, Sean. I'm referring to the view that you get by pressing either the P key or the "Full View" key on the Speed Editor. You're calling it the "Video Clean Feed", right?

I find video clean feed works really well and is a great way to see what the end result will look like when you're working on edits (especially in Fusion) with on-screen controls.

Precisely why I'd like to implement it. My secondary monitor is idle during Resolve sessions.

Video Clean Feed is really useful. I use it on my Eizo for grading and it works well. This feature is only available in the Studio version of Resolve.

Are you talking about the "video clean feed" option? (It's only available in the Studio version).

I'm referring to the view that you get by pressing either the P key or the "Full View" key on the Speed Editor. You're calling it the "Video Clean Feed", right?

No, the "Full View" key on the Speed Editor and the "P" shortcut open what's called the "Cinema Viewer". It is a full screen view, but it replaces the main UI window on the same monitor. It's accessed via the menu path "Workspace --> Viewer Mode --> Cinema Viewer".

"Video Clean Feed" puts up a full screen view of what you're working with on a separate monitor, and the view omits any interface controls you may be working with on the viewer in the main UI window. It's accessed via the menu path "Workspace --> Video Clean Feed --> [select monitor]"

"Video Clean Feed" is only available in the studio version of Resolve, and as far as I know it's the only way to send a video feed to anything other than the main UI window. I don't believe that Cinema Viewer has that ability.

At least I can't see a way to do it on my system, although page 20 of the November 2021 Resolve Reference manual suggests that you can. It's possible that since I have the studio version and I can use "Video Clean Feed" that some of the Cinema Viewer functionality is redundant and therefore disabled.

Wowsers, Sean! "Video Clean Feed" was exactly what I was hoping for. I never would have found it spelunking through the manual. Thanks!

And thanks, Charles, for the attachment illustrating precisely what I was hoping for. Since you have a nearly identical system to mine, I could really use some assistance tracking down audio track crackling. I have a Behringer A to D sound module like yours. Perhaps we could do it offline so as not to clog up the forum.

The $300 I spent on the Speed Editor and Resolve Studio must be my best production expenditure since I bought an Arri ST in the middle 70s

Hello, Peter. Glad you got it working.
I normally use the computers' in built Realtek soundcard for audio monitoring. If I need to input audio from an analogue source I use my Behringer 1204 usb mixer for which I have a Behringer driver.
Pops and clicks in the audio are usually caused by either a clocking error or to low a buffer size.
There was a problem in the past with clicks and pops appearing on renders when using Maximum as the render speed though I thought this had been cured.

Thanks, Charles. I'd not considered using the computer's native sound system. I'll try that out.

The problem is definitely Resolve-related. Sound is fine in all other applications.

I get garbled sound whenever there is 4K video present in the timeline. "Optimized Media" removes this problem completely. Rendered media don't exhibit it.

I see similar issues in Fairlight with no video media present in the timeline at all.

I've tried every combination of buffer size and sample size available, but the problem persists.

I think I've hi-jacked this thread enough.

Wowsers, Sean! "Video Clean Feed" was exactly what I was hoping for. I never would have found it spelunking through the manual.

The hardest part is knowing what to look for. The replies to your question named it, so you could have found it in the PDF manual with a search.