Am I right in assuming that you use the 188.8.131.52 version of Remote Utilities? If this is the case, then could you please try updating your installation to the most recent 6.12 Beta 2 version and see if the blank screen option works for the external monitor this way and if you're able to see the custom text? In the 6.12 Beta 2 version, we have implemented a new blank remote screen mechanism that completely replaced the old driver-based mechanism and which allows adding a custom text to the remote screen when it is blanked. For more information on the release notes please see this page.
When updating Remote Utilities, please make sure to update both Viewer and Host/Agent (as well as the RU Server if used) as the version mismatch might lead to performance issues and some features not working. The 6.12 Beta 2 version is available for the download on this page.
Please let us know if the issue persists even after updating to the 6.12 Beta 2 version.
Hi Polina, thank you very much for your prompt response
I can confirm the blank screen (and message) works fine and on all connected external monitors in 6.12 beta 2
The only issue is that when screens are blanked it seems to have reduced the color depth in the viewer as per screenshot attached, so screens don't look very nice, would be handy if this could be resolved - happy to test anything you need
This is a known issue that is caused by a blank screen mechanism specific features. Unfortunately, the "driver method" is outdated and soon won't be supported by Windows at all. Besides, the new method is more versatile - namely, it works on laptops without blocking out the brightness controls (whereas the driver method has such a problem).
Unfortunately, there are some downsides like the degraded colors when the blank remote screen feature is enabled. However, we'll see how we can improve the feature in our future updates.