234888 2022-01-05 10:30:24 -0800 MiniBrowser crashes immediately after starting on Windows 7 (WinCairo) 2022-01-05 12:05:55 -0800 1 1 1 Unclassified WebKit Tools / Tests WebKit Local Build PC Other NEW P2 Blocker --- 1 conojab991 webkit-unassigned fujii oldest_to_newest 1828312 0 conojab991 2022-01-05 10:30:24 -0800 MiniBrowser crashes immediately after starting on Windows 7. I tried the same build on a Windows 11 machine and it worked fine. Below are the crash details. Problem signature: Problem Event Name: APPCRASH Application Name: WebKitGPUProcess.exe Application Version: 0.0.0.0 Application Timestamp: 61cccfe7 Fault Module Name: WebKit2.dll Fault Module Version: 0.0.0.0 Fault Module Timestamp: 61cf9fcf Exception Code: c0000005 Exception Offset: 000000000009dc43 OS Version: 6.1.7601.2.1.0.256.48 Locale ID: 1033 Additional Information 1: 1aed Additional Information 2: 1aed6afc969eae30c2ef855195f921e6 Additional Information 3: 97f6 Additional Information 4: 97f60414a8c8a8a85b0e0ed0b58be636 Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 If the online privacy statement is not available, please read our privacy statement offline: C:\Windows\system32\en-US\erofflps.txt 1828347 1 fujii 2022-01-05 12:01:24 -0800 Thank you very much for the bug reporting. Can you use Visual Studio debugger? Can you post a backrace of the crash? The start page of MiniBrowser is https://webkit.org/ . This page enables Accelarated Compositing automatically, and uses GPU process. What will happen in simple pages that don't need Accelarated Compositing? For example, > MiniBrowser.exe https://webkit.org/reporting-bugs/ Or, what will happen if you disable GPU process by changing the registry keys. > reg add HKEY_CURRENT_USER\Software\WebKit /v gpu_process_canvas_rendering /t REG_DWORD /d 0 /f > reg add HKEY_CURRENT_USER\Software\WebKit /v gpu_process_webgl /t REG_DWORD /d 0 /f You can restore the original behavior with the following commands: > reg delete HKEY_CURRENT_USER\Software\WebKit /v gpu_process_canvas_rendering /f > reg delete HKEY_CURRENT_USER\Software\WebKit /v gpu_process_webgl /f What about WinCairo WebKit1? > MiniBrowser.exe --wk1 https://webkit.org/reporting-bugs/ 1828349 2 fujii 2022-01-05 12:05:55 -0800 > What will happen in simple pages that don't need Accelarated Compositing? > For example, > > MiniBrowser.exe https://webkit.org/reporting-bugs/ If this doesn't crash, what if I you disalbe Accelerated Compositing by using Menu item after starting MiniBrowser? Menu → Debug → Use Accelerated Compositing