Black window when starting RDM

pretty much as per title - when i start RDM i get a black screen and cannot continue.

Fedora42 KDE spin, using the RemoteDesktopManager_2025.2.0.9_x86_64.rpm package.

I've moved from windows to linux last week and RDM was running fine last week with various sleep & reboots. this morning RDM refuses to start and results in this black screen!

The only obvious recent change i've done is add MFA to the local DB, but I've been able to start RDM a few times since enabling that.

attempting to close RDM via the taskbar 'X' results in the 'not responding' window.


i've moved the profile folder ~/.rdm to ~/.rdm-bak and started fresh which is now allowing RDM to run but obviously i need to run through setting things back up again.


RemoteDesktopManager.log.db shows the following:

72025-07-21 07:59:132025.2.0.9 - 64-bitSystem.AggregateException: One or more errors occurred. (Unable to write data to the 
transport connection: Connection reset by peer.)
 ---> System.IO.IOException: Unable to write data to the transport connection: Connection reset by peer.
 ---> System.Net.Sockets.SocketException (104): Connection reset by peer
   at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   --- End of inner exception stack trace ---
   at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   at Devolutions.Rpc.Transport.TcpConnection.Send(Byte[] data, Int32 offset, Int32 length)
   at Devolutions.Rpc.Transport.BaseConnection.Send(Message message)
   at Devolutions.Rpc.Rpc.Peer.Devolutions.Rpc.Proxy.IProxyCallbackHandler.HandleProxyCallback(String interfaceName, String procedure
Name, Object[] parameters, MethodBase methodBase)
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, Con
textCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, Con
textCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at Devolutions.NativeSessions.RDPClientProxyImplementation.get_IsRunning()
   at Client.Views.Embedded.EmbeddedRDPView.Resize(Rectangle newSize)
   at Client.Views.Embedded.BaseEmbeddedView.OnSizeAllocated(Object sender, SizeAllocatedArgs args)
   at InvokeStub_SizeAllocatedHandler.Invoke(Object, Span`1)
   at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, 
CultureInfo culture)
------------------------ extended stack ------------------------
   at Devolutions.RemoteDesktopManager.Managers.LogManager.HandleException(Exception exception)
   at GLib.ExceptionManager.RaiseUnhandledException(Exception e, Boolean is_terminal)
   at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invo
cation_hint, IntPtr marshal_data)
   at Devolutions.RemoteDesktopManager.Program.Main(String[] args)