Multimonitor set keeps changing on computer startup

I am using DR 18.6 Studio in a multimonitor setup. I actually have 5 monitors hooked up (I know that is a lot but they come in handy during NFL season.) Anyhow. I get 3 of the monitors set up for my DR workflow, Primary, Secondary, and a Clean Feed.

If I keep my computer on and close DR, then later open up DR again, the monitors are all in their preset locations. However, if I close DR AND turn off my computer when I reboot and open DR, it still opens in multiscreen mode but the windows are not in their preset positions. Even if I go into my presets and try to use them, they are not correct.

When I turn off my computer and start it all my Windows 11 settings are the same. The monitors are numbered the same and in their same positions. Even if I open a web browser or open a file it will open on the same screen it was last opened on, so I can't believe it is a computer issue.

If you have had this issue and found away to fix it I would love your input.

I too, use 3 monitors for Resolve and the layout never changes. These are my Nvidia settings.

Nvidia Monitor Setup.jpg (120.82 KiB) Viewed 1680 times

Number 2, the BenQ is set as the default Windows display.
In Resolve the Eizo is receiving Video Clean Feed, the BenQ on the left is the Secondary and the Samsung on the right is the Primary.

3 Screen Edit with Clean Feed crop.jpg (267.22 KiB) Viewed 1680 times

I don't know if it makes a difference but I run Resolve as Administrator.

I am having similar issues.
I have more than 3 monitors but three of them using as a one "wide screen". Nvidia Surround is Off.
After starting (after reboot or after just close - no differences) DaVinci Resolve opens only at main* monitor and never remembers windows size/position. I'm changing it size from the upper left corner of leftmost monitor for DaVinci to the bottom right corner of rightmost monitor.
Seems like DaVinci Resolve is not ready for multimonitor setup because it never remembers windows size/position, there are no posibilities to move/resize inner windows to make preview just at the center of the middle monitor from set of 3 (all this is possible and works ok in AP..). And moving to DaVinci because of this are very "complicated". It's very strange that there is 18 major versions in history and such thing was not made. I see many strengths in Resolve against AP but...

My setup never changes, it always opens in the same layout every time I start Resolve. Dragging a single screen view across multiple monitors will not work as you normally set what each monitor is receiving with the Primary and Secondary selections in the Workspace dropdown menu.
The Resolve UI only uses two screens. I use my third for Video Clean Feed.

For example:

240521-013621-nvcplui-URa8.png (10.28 KiB) Viewed 835 times

Monitors 3+1+2 used as one big area for Primary Display, 4 as a Video Clean Feed, Dual Screen Off.
And it looks crazy - I can resize media pool to take up the entire width of "3" (it's enough for me if it only takes 1/4 of it), but can't resize/divide the right part, where the preview+inspector/metadata/mixer/quick export panel are. So the preview is not at a center of "1" but near the right border of "2". In AP, I can move/edit/add/change any of the windows to any position and size. I'm new to Davinci, and I've been trying to switch from AP for almost a week. I'm in the process of deciding whether to choose Davinci for future use (and to buy Blackmagick keyboard or Speed editor or not), and such (first-need) things give me a pain in the butt.

Dual Screen needs to be ON. This is my screen layout with the displays setup in the Workspace dropdown menu.

Display Setup.jpg (135.31 KiB) Viewed 797 times

All three Screens.jpg (640.51 KiB) Viewed 797 times

Floating windows such as Scopes can be dragged to any monitor and will stay there.

You can select whether you have one or two viewer windows open. Depending how large you make the viewers section, only one viewer may be visible when the Inspector is open. You can switch between Source and Timeline view with the Q key. Whatever is selected will appear in the Video Clean Feed.

Another option is to shrink the viewers area. Then you can have both viewers displayed with the Inspector. You will get more Timeline space and can use the Video Clean Feed as your viewer which will display either Source or Timeline, whichever is in focus.

You should produce a basic Resolve manual, Charles; your instructions and diagrams are always very clear

If I need all width timeline then in Davinci it is not possible?

Look at my old APP configuration:
Leftmost monitor is for media browser, inspector and so on, and a source monitor
Middle is for timeline preview, full width
Right is for effects, plugins etc.
And most important - timeline. 80% of the width of APP window. The more - the better. I can drag bottom-left mediabrowser upper and timeline will fill 100% of the width of APP window.

240521-APP.png (145.38 KiB) Viewed 729 times

Now look at Davinci layouts. Double View off and Double View On
Both of them can't satisfy me and I don't know how to do that.
In Dual View On I have one monitor eaten for media browser and edit timeline/tracks/markers, but if I don't need so much space for them it's space eater. 90% of this monitor space is lost.

If Single View is Off then I can't drag splitter of two previews to a position where monitors divided physically and can't change source preview to timeline preview and vice versa. So to see what I'm doing on a timeline I need to look at the right, it is not in front of me. And even if source monitor would be at the right part then my medias at the left and preview at the right... too much movements and comparations which file leads to which source.
When I need to do this thousands of times per day you can (or can't) imagine what will happen with my physical and mental health.

240521-DR-DVOn-SOff.png (233.16 KiB) Viewed 729 times

If Single View is On then single preview of timeline divided between center and right monitors, a lot of space at right (and left) are lost too. If some instruments can be enabled and seen together and can be placed near Quick Export/Meters/Inspector pane - it would be great, but I can't find any option about it.
And of course, timeline is only at the "main" screen, but ok, it is whole screen wide.
But after closing Davinci window and restarting I have broken layouts and need to change Davinci main window size to fill two monitors. I have hotkeys for that but it's very uncofrortable when programs in 2024 didn't remember their size/position. Such professional programs especially.

240521-DR-DVOn-SOn.png (267.33 KiB) Viewed 729 times

In Double View Off mode I resize Davinci window to needed width (100% of 3, 100% of 1 and 90% of 2).
I can drag split line of media browser and preview of timeline, but can't drag right pane or add something to that, and if I split mediabrowser and preview to get mediabrowser full width of left monitor then preview is divided between monitors.
Only solution is to drag mediabrowser/preview split line to the left - only this can place preview at the center. But this time preview borders eats almost whole monitors space.
There is so few things I can do in Davinci or I don't understand how to organize workspace to maximise productivity - as much possible tools/infos viewable at each moment.

240521-DR-DVOff.png (267.04 KiB) Viewed 727 times

You cannot place sections of the Resolve UI where you like as you can in Premiere, they are fixed. A customizable layout has been asked for many times in the Feature Request section of the forum, but is not forthcoming.

Hi
I've been annoyed with this problem on my two multimonitor editing machines since I've been using resolve since v17

Both currently running Resolve Studio 18.6.6 on Windows 11 Enterprise
1st has 1 A5000 connected to 4 screens
2nd has 2 a4500 connected to 8 screens

After I reboot I have to go through the whole list of monitors because 1- they're all named "Generic PnP Monitor 1" to 8 and 2- they change order after a reboot.

I have a similar problem with Bitwig Studio but not in Steinberg Nuendo or Blender 3D for examples

Am willing to give some time to help the team if they need some help running some additional diag tools or scripts on my installations.

Have a great weekend everyone

Looks like your monitors are not providing EDID information. Windows uses this information to maintain with every reboot the previous configuration.

Losing EDID along the way can be caused by using incorrect programmed EDID minder, KVM switches, Matrixes, incomplete wired cables, extension tools that wired your video and clock both no handshake information.

Testing is simple: use a short complete good working cable to a monitor and observe the naming of the monitor in NVidia Control Panel. You should see the name of the monitor.

MonInfo is a (Windows) tool that can display all EDID information a monitor provides to the host computer upon interrogation.

But if you want a really long timeline, the best solution is an ultra-wide monitor.
Works very well for an old friend of mine.

But if you want a really long timeline, the best solution is an ultra-wide monitor.
Works very well for an old friend of mine.

Inadequate price:quality, stacking more than one monitor, RMA etc. Too much troubles against matrix of 16:9.

Robert de Wit, I have been having problems with NVidia Surround on every machine in a multimonitor setup for a long time. On every machine, with every driver version, and every video card, when I enable or disable NVidia Surround, the monitors get mixed up. For example, if the initial configuration is #3, #1, #2, enabling Surround might show #2, #3, #1, and applying the changes might mix them up again to #1, #3, #2. When I disable Surround, they might be numbered #3, #2, #1. This is just an example. Connections and numbers can be different, but the symptoms are always the same. NVidia Control Panel on the Surround page shows different numbers compared to the Windows display settings AND the NVidia Control Panel's monitor numbering. After enabling then disabling Surround, all the settings are messed up.
And I use a script to delete the registry key [-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration].
I have to do this on every machine. There are a lot of machines. When not using Surround, this problem does not occur. This problem has existed for years.
PS: The monitors are absolutely identical; they are all dell and the same model, just with different service numbers. It's an NVidia "forever-bug".

I never use the Surround setting so haven't encountered that problem.
One thing I have noticed however, is that the Nvidia Control Panel correctly lists the names of my monitors and Resolve doesn't.