White screen / frozen screen when sending a lot of requests

[VladimirLuzhin]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

120.1.10

Operating System

Windows 10

Architecture

x64

.Net Version

.NET6

Implementation

WinForms

Reproduction Steps

I have a react application running in a CEF browser, which periodically sends various requests (healthchecks, updating settings, etc.), everything works fine, but after some time, the CEF browser dies, in devtools it looks like a "Render error process gone", and the browser either freezes or just shows a white screen.

I have prepared code that allows you to reproduce this problem. On my machine the ceph browser dies after ~800 seconds.

export const App: React.FC = () => {
    const [seconds, setSeconds] = useState(0)

    useEffect(() => {
        let isHandling = false;

        const interval = setInterval(async () => {
            if (isHandling)
                return

            isHandling = true
            await fetch('any available endpoint');
            isHandling = false
        }, 1)
        
        const interval2 = setInterval(() => {
            setSeconds(prev => prev + 1)
        }, 1_000)

        return () => {
            clearInterval(interval)
            clearInterval(interval2)
        }
    }, []);
    
    return <div style={{margin: 'auto'}}>{seconds} seconds have passed</div>
}

Its reproducing with CefSharp.MinimalExample.WinForms, i just open the page contains only this react component.

Expected behavior

Works fine no matter how much time has passed

Actual behavior

White / frozen screen after some time

Regression?

Same behavior on 113.1.40 version

Known Workarounds

No response

Does this problem also occur in the CEF Sample Application

Yes using WinForms command line args

Other information

last lines in debug.log

[0111/174545.505:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)
[0111/174630.418:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)
[0111/174916.662:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)
[0111/175010.613:ERROR:command_buffer_proxy_impl.cc(319)] GPU state invalid after WaitForGetOffsetInRange.
[0111/175010.614:ERROR:command_buffer_proxy_impl.cc(127)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.
[0111/175014.146:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)
[0111/175028.141:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)
[0111/175031.370:ERROR:CONSOLE(0)] "ReferenceError: dragEvent is not defined", source:  (0)

Thank you in advance!

[amaitland]

Does this problem also occur in the CEF Sample Application

Not Tested

You'll need to test with the CEF Sample Application.

[0111/175010.613:ERROR:command_buffer_proxy_impl.cc(319)] GPU state invalid after WaitForGetOffsetInRange.
[0111/175010.614:ERROR:command_buffer_proxy_impl.cc(127)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.

If the GPU Process crashed then a white/frozen screen is to be expected.

[VladimirLuzhin]

My bad, i choose the wrong option in "Does this problem also occur in the CEF Sample Application" selection.

Its reproducing with CefSharp.MinimalExample.WinForms, i just open the page contains only this react component.

[amaitland]

To help determine where the problem needs to be fixed please download and test using the CEF Sample Application(cefclient).
1. Download for x86 or x64 or arm64.
2. Extract tar.bz2 file
3. Execute cefclient.exe using the command line args below:

      For WPF/OffScreen `cefclient.exe --multi-threaded-message-loop --no-sandbox --off-screen-rendering-enabled --enable-gpu`
      For WinForms `cefclient.exe --multi-threaded-message-loop --no-sandbox`

[xuwangyi]

Level: Error

Message: Permissions policy violation: unload is not allowed in this document.

happen this error, how to fixed?
windows 10 ,and the screen white ,some time show website,but can't do any thing in website
the cefsharp.wpf version was 103.0.90.0

[amaitland]

If the problem reproduces in the current supported version (M120 at time of writing) then open your own discussion.

https://github.com/cefsharp/CefSharp/discussions/new/choose

You can use https://github.com/cefsharp/CefSharp.MinimalExample for testing purposes.

[VladimirLuzhin]

Same behaviour with CEF Sample Application(cefclient), frozen screen. Checked the versions x86 and x64

Last logs in debug.log

[0125/124124.535:ERROR:command_buffer_proxy_impl.cc(319)] GPU state invalid after WaitForGetOffsetInRange.
[0125/124124.535:ERROR:command_buffer_proxy_impl.cc(127)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.

[amaitland]

As it reproduces with cefclient then it's not a bug in CefSharp.

What is your GPU? Try disabling GPU Acceleration and/or GPU Componsiting

settings.CefCommandLineArgs.Add("disable-gpu");
settings.CefCommandLineArgs.Add("disable-gpu-compositing");