[kmail2] [Bug 466124] New: kmail preview pane empty on wayland nvidia

[Sylvain]

https://bugs.kde.org/show_bug.cgi?id=466124

            Bug ID: 466124
           Summary: kmail preview pane empty on wayland nvidia
    Classification: Applications
           Product: kmail2
           Version: 5.22.2
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: message list
          Assignee: kdepim-bugs at kde.org
          Reporter: ago.sylvain at gmail.com
  Target Milestone: ---

SUMMARY
Under wayland with nvidia, when opening kontact (or kmail alone), the preview
pane for email does not show the email contents and lots of error show in the
terminal. This does not happen on x11. Opening preferences, changing the layout
back and forth fixed it.

STEPS TO REPRODUCE
1. Launch a wayland session
2. Open Kontact
3. Kmail mail preview pane is empty
4. Open preferences, change in layout the settings of preview pane ("do not
show" -> apply -> "show below" -> apply)
5. Preview pane is visible.

OBSERVED RESULT
Preview pane is empty until settings are changed back and forth and terminal
show the following output:

```
[21307:21355:0220/180424.309479:ERROR:gl_context_egl.cc(259)] eglCreateContext
failed with error EGL_BAD_CONTEXT
[21307:21355:0220/180424.309492:ERROR:gpu_channel_manager.cc(753)]
ContextResult::kFatalFailure: Failed to create shared context for
virtualization.
[21307:21355:0220/180424.309498:ERROR:shared_image_stub.cc(470)]
SharedImageStub: unable to create context
[21307:21355:0220/180424.309506:ERROR:gpu_channel.cc(449)] GpuChannel: Failed
to create SharedImageStub
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
[21307:21355:0220/180434.684707:ERROR:gl_context_egl.cc(259)] eglCreateContext
failed with error EGL_BAD_CONTEXT
[21307:21355:0220/180434.684727:ERROR:gpu_channel_manager.cc(753)]
ContextResult::kFatalFailure: Failed to create shared context for
virtualization.
[21307:21355:0220/180434.684733:ERROR:shared_image_stub.cc(470)]
SharedImageStub: unable to create context
[21307:21355:0220/180434.684744:ERROR:gpu_channel.cc(449)] GpuChannel: Failed
to create SharedImageStub
org.kde.pim.akonadicore: Received response with a different tag!
```

EXPECTED RESULT
Preview pane should work

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 37
KDE Plasma Version: 5.27.0
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.11-200.fc37.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-7700 CPU @ 3.60GHz
Memory: 47.0 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2
Manufacturer: Dell Inc.
Product Name: XPS 8920
System Version: 1.0.10

ADDITIONAL INFORMATION

nividia driver installed from rpm-fusion repo.
| NVIDIA-SMI 525.89.02    Driver Version: 525.89.02    CUDA Version: 12.0     |

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