Cannot connect a second time unless restart the system

[paulzzh]

Is there an existing issue for this?

• I have searched the existing issues

Is your issue described in the documentation?

• I have read the documentation

Is your issue present in the latest beta/pre-release?

• This issue is present in the latest pre-release

Describe the Bug

Clean install Windows and drivers
Launch the VM
Connect with moonlight
Login windows
Sunshine works perfect with hevc_qsv accelerate

Press Ctrl+Alt+Shift+Q to disconnect
Reconnect
Black screen and timeout "no video received from host"
The log repeats "Detecting monitors..."

Restart the VM
Sunshine works again

Expected Behavior

Moonlight can show the screen after disconnection and reconnection

Additional Context

I'm using Proxmox with SR-IOV to split & passthrough iGPU to the VM, with itsmikethetech's virtual display driver. #1614
Proxmox 8.2.2 with kernel 6.5.13-5-pve link

When Sunshine works the "Detecting monitors" has "Info: Capture format [DXGI_FORMAT_B8G8R8A8_UNORM]" and "Frame 1: IDR Keyframe (AV_FRAME_FLAG_KEY)".
When it repeats the "Detecting monitors" there is no "Capture format" and "IDR Keyframe".

Sunshine/src/platform/windows/display_wgc.cpp

Lines 237 to 253 in e1f0ca8

	display_wgc_ram_t::snapshot(const pull_free_image_cb_t &pull_free_image_cb, std::shared_ptr<platf::img_t> &img_out, std::chrono::milliseconds timeout, bool cursor_visible) {
	HRESULT status;
	texture2d_t src;
	uint64_t frame_qpc;
	dup.set_cursor_visible(cursor_visible);
	auto capture_status = dup.next_frame(timeout, &src, frame_qpc);
	if (capture_status != capture_e::ok)
	return capture_status;
	auto frame_timestamp = std::chrono::steady_clock::now() - qpc_time_difference(qpc_counter(), frame_qpc);
	D3D11_TEXTURE2D_DESC desc;
	src->GetDesc(&desc);
	// Create the staging texture if it doesn't exist. It should match the source in size and format.
	if (texture == nullptr) {
	capture_format = desc.Format;
	BOOST_LOG(info) << "Capture format ["sv << dxgi_format_to_string(capture_format) << ']';

Maybe capture_status is not capture_e::ok ?

Host Operating System

Windows

Operating System Version

windows 10 22h2

Architecture

64 bit

Sunshine commit or version

v2024.610.122248

Package

Windows - installer

GPU Type

Intel

GPU Model

Intel(R) UHD Graphics 770 (i7-14700k)

GPU Driver/Mesa Version

31.0.101.4338

Capture Method (Linux Only)

No response

Config

min_log_level = 1

Apps

No response

Relevant log output

There was an error creating your issue: body is too long (maximum is 65536 characters).
https://pastebin.com/cRsi0zbk

[ReenigneArcher]

Does increasing channels to 2 solve the problem?

[paulzzh]

Does increasing channels to 2 solve the problem?

no.
I think it's a DXGI capture issue.
Just start windows and restart sunshine in WebUI first. It's black screen.

[Nonary]

Might be fixed with #3002 but not sure, the symptoms sort of match, where it causes black screens if it happens to pick the wrong GPU

[antst]

I observe the same issue with ubuntu 24.04, nvidia 550.107 and v2024.1025.12635.
You can't connect second time, unless restart sunshine

[WaterCalm]

I have the same issue. After starting the Windows system, I can only connect normally once. When I try to connect a second time, the screen goes black, and after a while, I receive a prompt asking me to check the firewall settings. The only way to resolve this is by restarting the Windows system, after which I can connect again.

Version: v2025.122.141614
Windows 11
NVIDIA GeForce RTX 3090