Editor Crashing Occasionally After Paste

[enuddleyarbl]

Last night, I was editing some epub3 books in the Calibre (v 6.9.0) Editor and had multiple crashes. I *think* they were all just after pasting a word or two into the Search bar at the bottom. Not reproducible on demand, so I can't give any more information. I just copied a word or two, went to the Search bar, hit CTRL-V and the editor disappeared. The three reports in the Event Viewer look pretty close to each other.

This is a nine-day-old fresh installation of Windows 11 22H2 with the latest Calibre. Here's the last one error:

Log Name:      Application
Source:        Application Error
Date:          12/8/2022 9:22:07 PM
Event ID:      1000
Task Category: Application Crashing Events
Level:         Error
Keywords:      
User:          DavesWin11\Dave
Computer:      DavesWin11
Description:
Faulting application name: calibre-parallel.exe, version: 6.9.0.0, time stamp: 0x63802411
Faulting module name: Qt6WebEngineCore.dll, version: 6.3.1.0, time stamp: 0x633237c2
Exception code: 0xc0000005
Fault offset: 0x00000000002189ae
Faulting process id: 0x0x2224
Faulting application start time: 0x0x1D90B8E1229CD97
Faulting application path: C:\Program Files\Calibre2\calibre-parallel.exe
Faulting module path: C:\Program Files\Calibre2\app\bin\Qt6WebEngineCore.dll
Report Id: 00887643-1ce5-4004-ab21-3ca67a0182cd
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" Guid="{a0e9b465-b939-57d7-b27d-95d8e925ff57}" />
    <EventID>1000</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>100</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2022-12-09T05:22:07.0656762Z" />
    <EventRecordID>2399</EventRecordID>
    <Correlation />
    <Execution ProcessID="1624" ThreadID="296" />
    <Channel>Application</Channel>
    <Computer>DavesWin11</Computer>
    <Security UserID="S-1-5-21-4271303389-4217837961-1808198341-1001" />
  </System>
  <EventData>
    <Data Name="AppName">calibre-parallel.exe</Data>
    <Data Name="AppVersion">6.9.0.0</Data>
    <Data Name="AppTimeStamp">63802411</Data>
    <Data Name="ModuleName">Qt6WebEngineCore.dll</Data>
    <Data Name="ModuleVersion">6.3.1.0</Data>
    <Data Name="ModuleTimeStamp">633237c2</Data>
    <Data Name="ExceptionCode">c0000005</Data>
    <Data Name="FaultingOffset">00000000002189ae</Data>
    <Data Name="ProcessId">0x2224</Data>
    <Data Name="ProcessCreationTime">0x1d90b8e1229cd97</Data>
    <Data Name="AppPath">C:\Program Files\Calibre2\calibre-parallel.exe</Data>
    <Data Name="ModulePath">C:\Program Files\Calibre2\app\bin\Qt6WebEngineCore.dll</Data>
    <Data Name="IntegratorReportId">00887643-1ce5-4004-ab21-3ca67a0182cd</Data>
    <Data Name="PackageFullName">
    </Data>
    <Data Name="PackageRelativeAppId">
    </Data>
  </EventData>
</Event>

Computer: GIGABYTE B550 VISION D-P
CPU: AMD Ryzen 5 5600X (Vermeer, VMR-B0)
3700 MHz (37.00x100.0) @ 3593 MHz (36.00x99.8)
Motherboard: GIGABYTE B550 VISION D-P
BIOS: F15d, 07/20/2022
Chipset: AMD B550 (Promontory PROM19 C)
Memory: 16384 MBytes @ 1597 MHz, 14-14-14-34
- 8192 MB PC25600 DDR4 SDRAM - G.Skill F4-3200C14-8GFX
- 8192 MB PC25600 DDR4 SDRAM - G.Skill F4-3200C14-8GFX
Graphics: AMD Radeon RX 6800 XT
AMD Radeon RX 6800 XT, 16384 MB GDDR6 SDRAM
Drive: KINGSTON SKC3000D2048G, 2000.4 GB, NVMe
Sound: ATI/AMD Navi2x - High Definition Audio Controller
Sound: AMD Family 17h/19h - HD Audio Controller
Network: RealTek Semiconductor RTL8125 Gaming 2.5GbE Family Ethernet Controller
Network: Intel Wi-Fi 6 AX200 160MHz
OS: Microsoft Windows 11 Professional (x64) Build 22621.900

[enuddleyarbl]

I'll also try running Calibre in debug mode for a bit to see if I can catch this. Of course, my assumption is that Windows is responsible for things like cut/paste so this shouldn't be a Calibre issue at all. But, so far, it's not happening anywhere else. Then again, maybe the problem isn't happening with the paste. I'll have to pay more attention to that, as well.

I hate Windows. I especially hate Windows 11. And, most especially, I hate 22H2.

[kovidgoyal]

That's a crash in webengine (the preview panel). Update your GPU drivers or turn off hardware acceleration for webengine as described here: https://doc.qt.io/qt-6/qtwebengine-debugging.html

[retiredbiker]

Originally Posted by enuddleyarbl

I hate Windows. I especially hate Windows 11. And, most especially, I hate 22H2.

I said that for years...retired in 2012, sent back my company laptop, got a new computer and set up Ubuntu. Now have a dedicated Linux box from System 76. Haven't touched Windows since. I don't think I've sworn at my computer more than a couple of times since then...and only when I broke it by going under the covers too far.

[enuddleyarbl]

My AMD video drivers for my AMD Radeon RX 6800 XT are fully updated (Adrenalin version 22.11.2). So, it looks like I'll need to set the following environment variable someplace:

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

In Windows 11, I went to System Properties > Advanced > Environment Variables > User Variables > New and set:

Variable Name: QTWEBENGINE_CHROMIUM_FLAGS
Variable Value: disable-gpu

No quotes, no double dash, exactly as shown, above.

Is that the correct way to do this on Windows?

[kovidgoyal]

You need the leading dashes.

[enuddleyarbl]

I don't want to jinx myself, but it's been almost two days of editing in Calibre and Kovid's suggestion of turning off gpu hardware acceleration for QTWebEngine seems to have worked. I added the following to Windows:



(note the dashes in the parameter Kovid mentioned, above)
And no crashes in the editor.

It also appears to have solved my problems with Calibre and various of its tools not appearing to start but taking up 10% of the CPU:

https://www.mobileread.com/forums/sh...d.php?t=350519

and the viewer occasionally taking a looooong time to start:

https://www.mobileread.com/forums/sh...d.php?t=348750

I'm furiously knocking on wood. So, we'll see if those things are actually fixed over time.

Thanks again, Kovid.

[enuddleyarbl]

Drat.

Disabling hardware acceleration didn't fix it. It just happened again on a paste (CTRL-V) of some simple material (' class="copyright"') copied with the standard CTRL-C. I'm pretty sure this was the first thing I did in this Editor session. Here's the Event Viewer information:

Log Name:      Application
Source:        Application Error
Date:          12/11/2022 7:04:23 AM
Event ID:      1000
Task Category: Application Crashing Events
Level:         Error
Keywords:      
User:          DavesWin11\Dave
Computer:      DavesWin11
Description:
Faulting application name: calibre-parallel.exe, version: 6.9.0.0, time stamp: 0x63802411
Faulting module name: Qt6WebEngineCore.dll, version: 6.3.1.0, time stamp: 0x633237c2
Exception code: 0xc0000005
Fault offset: 0x00000000002189ae
Faulting process id: 0x0x25DC
Faulting application start time: 0x0x1D90D71A504AC51
Faulting application path: C:\Program Files\Calibre2\calibre-parallel.exe
Faulting module path: C:\Program Files\Calibre2\app\bin\Qt6WebEngineCore.dll
Report Id: 3e3d541f-931f-4b87-a740-c5205ae4ad37
Faulting package full name: 
Faulting package-relative application ID: 
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" Guid="{a0e9b465-b939-57d7-b27d-95d8e925ff57}" />
    <EventID>1000</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>100</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2022-12-11T15:04:23.9905735Z" />
    <EventRecordID>2793</EventRecordID>
    <Correlation />
    <Execution ProcessID="5684" ThreadID="5276" />
    <Channel>Application</Channel>
    <Computer>DavesWin11</Computer>
    <Security UserID="S-1-5-21-4271303389-4217837961-1808198341-1001" />
  </System>
  <EventData>
    <Data Name="AppName">calibre-parallel.exe</Data>
    <Data Name="AppVersion">6.9.0.0</Data>
    <Data Name="AppTimeStamp">63802411</Data>
    <Data Name="ModuleName">Qt6WebEngineCore.dll</Data>
    <Data Name="ModuleVersion">6.3.1.0</Data>
    <Data Name="ModuleTimeStamp">633237c2</Data>
    <Data Name="ExceptionCode">c0000005</Data>
    <Data Name="FaultingOffset">00000000002189ae</Data>
    <Data Name="ProcessId">0x25dc</Data>
    <Data Name="ProcessCreationTime">0x1d90d71a504ac51</Data>
    <Data Name="AppPath">C:\Program Files\Calibre2\calibre-parallel.exe</Data>
    <Data Name="ModulePath">C:\Program Files\Calibre2\app\bin\Qt6WebEngineCore.dll</Data>
    <Data Name="IntegratorReportId">3e3d541f-931f-4b87-a740-c5205ae4ad37</Data>
    <Data Name="PackageFullName">
    </Data>
    <Data Name="PackageRelativeAppId">
    </Data>
  </EventData>
</Event>

This time around there were a couple of identical things in the Viewer that happened one second after the editor crashed:

Log Name:      Microsoft-Windows-ModernDeployment-Diagnostics-Provider/ManagementService
Source:        Microsoft-Windows-ModernDeployment-Diagnostics-Provider
Date:          12/11/2022 7:04:24 AM
Event ID:      1010
Task Category: None
Level:         Error
Keywords:      
User:          DavesWin11\Dave
Computer:      DavesWin11
Description:
Autopilot.dll WIL error was reported.
HRESULT: 0x80070491
File: onecoreuap\admin\moderndeployment\autopilot\dll\dllmain.cpp, line 128
Message: NULL
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-ModernDeployment-Diagnostics-Provider" Guid="{bab3ad92-fb96-5902-450b-b8421bdec7bd}" />
    <EventID>1010</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x1000000000000000</Keywords>
    <TimeCreated SystemTime="2022-12-11T15:04:24.7187665Z" />
    <EventRecordID>965</EventRecordID>
    <Correlation />
    <Execution ProcessID="2260" ThreadID="10476" />
    <Channel>Microsoft-Windows-ModernDeployment-Diagnostics-Provider/ManagementService</Channel>
    <Computer>DavesWin11</Computer>
    <Security UserID="S-1-5-21-4271303389-4217837961-1808198341-1001" />
  </System>
  <EventData>
    <Data Name="HRESULT">0x80070491</Data>
    <Data Name="File">onecoreuap\admin\moderndeployment\autopilot\dll\dllmain.cpp</Data>
    <Data Name="Line">128</Data>
    <Data Name="Message">NULL</Data>
  </EventData>
</Event>

But, since those are a standard "Out of the Box Experience" (i.e., it started immediately after the fresh install of the OS and before anything else was installed) problem that started flooding my Event Viewer log with Windows 11 22H2 that the geniuses at Microsoft are ignoring, they're likely not the cause.

Double-drat. If I hadn't written that disabling hardware acceleration was the solution to this and several other of my issue, I'm sure nothing bad would have happened .

EDIT: BTW, that CTRL-C text I added, above, is actually from my Windows copy/paste buffer. So, the copy worked fine. It's just Qt6WebEngineCore.dll got a Exception code: 0xc0000005 (access violation, I believe) on a simple paste. And that shouldn't happen. I guess I'm looking at a full system re-install in some attempt to make sure this isn't something corrupted on my system (although DISM, SFC and chkdsk all find no issues).

[kovidgoyal]

QtWebEngine is the component that powers the preview panel (its basically chrome wrapped up in Qt). When you paste you trigger a refresh of the preview since the content has changed. And the webengine is crashing. Sadly there's no easy way to get debug info on the crash in windows, so unless you can come up with a reliable reproducer there isnt much else I can suggest.

[enuddleyarbl]

Sorry, Kovid. It doesn't seem to be reproducible. I just went back into the very same book, copied the very same text and pasted it (many, many time) into the Find field of the Search bar (which is where I was pasting before). No problems. Ditto for pasting into the text, itself (many, many times). And ditto for just hitting F5 to refresh the screen a few hundred times.