[Bug 59624] New: MSFS 2024: RPC_S_SERVER_UNAVAILABLE crash when popping out instrument panels

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59624

            Bug ID: 59624
           Summary: MSFS 2024: RPC_S_SERVER_UNAVAILABLE crash when popping
                    out instrument panels
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rpc
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Summary

Microsoft Flight Simulator 2024 (Steam, AppID 2537590) crashes approximately 77
seconds after popping out an instrument panel (G1000 PFD/MFD) to a second
window. The crash originates in rpcrt4.dll with RPC_S_SERVER_UNAVAILABLE.

Environment

OS: Linux Mint 22 (X11/Cinnamon)
CPU: AMD Threadripper PRO 9975WX
GPU: NVIDIA RTX 5090
Proton: GE-Proton10-20 with VKD3D-Proton v3.0 built from source (HEAD)
MSFS 2024 version: 1.6.34.0
Display: 5120x1440, windowed mode
Frame Generation: disabled

Reproduction steps

* Launch MSFS 2024 via Steam/Proton
* Load a flight with a G1000-equipped aircraft (tested: Orbx COWS DA-42)
* In the cockpit, hover over the G1000 PFD and trigger panel pop-out (Right Alt
+ click, or remapped key)
* A second window appears and renders correctly for approximately 1 second
* After ~77 seconds, MSFS crashes

Crash signature


587471.177:0108:012c:warn:seh:virtual_unwind backtrace: 00006FFFFF920CB6:
L"rpcrt4.dll" + 0000000000030CB6.
587471.177:0108:012c:warn:seh:virtual_unwind backtrace: 00006FFFFF9102A4:
L"rpcrt4.dll" + 00000000000202A4.
587471.177:0108:012c:warn:seh:virtual_unwind backtrace: 00006FFFFF92F2FC:
L"rpcrt4.dll" + 000000000003F2FC.
587471.177:0108:012c:warn:seh:virtual_unwind backtrace: 00006FFFFF9136E2:
L"rpcrt4.dll" + 00000000000236E2.
587471.177:0108:012c:warn:seh:virtual_unwind backtrace: 00006FFFFF8F529B:
L"rpcrt4.dll" + 000000000000529B.
587471.178:0108:012c:trace:seh:dispatch_exception code=6ba
(RPC_S_SERVER_UNAVAILABLE)

Notes

* With older VKD3D (pre-v3.0 git builds as shipped in GE-Proton10-4 through
10-29), the crash was different: a null pointer dereference in the
vkd3d-swapchain-sync thread. Building VKD3D-Proton v3.0 from source and
injecting it into GE-Proton10-20 eliminated that crash and revealed this
underlying rpcrt4 issue.

* The pop-out window renders correctly for ~1 second before the hang,
suggesting the second swap chain is created successfully but the RPC connection
to Xbox Live/gaming services is dropped during or after window creation.

* MSFS repeatedly queries rpcss.exe via QueryFullProcessImageNameW in the
seconds before the crash, suggesting it is polling for the RPC service which
has become unavailable.

* The crash does not occur without the pop-out — MSFS runs stably for extended
periods otherwise.

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[Bug 59624] MSFS 2024: RPC_S_SERVER_UNAVAILABLE crash when popping out instrument panels

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59624

--- Comment #1 from Ákos Maróy <[e-mail]> ---
Created attachment 80689
  --> http://bugs.winehq.org/attachment.cgi?id=80689
steam log file

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