https://bugs.kde.org/show_bug.cgi?id=463403

            Bug ID: 463403
           Summary: Dozens of error in terminal, I think from Plasmashell
    Classification: Plasma
           Product: plasmashell
           Version: 5.26.4
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: plasma-b...@kde.org
          Reporter: php4...@gmail.com
                CC: k...@davidedmundson.co.uk
  Target Milestone: 1.0

SUMMARY
Because plasmashell froze and become unresponsive (because of some of the other
bugs that have already been reported), I killed it and launched it from a
terminal with:
```
killall plasmashell
kstart5 plasmashell
```
(btw, why it doesn't relaunch automatically after being killed is beyond my
understanding)

After a few hours I looked at the terminal from which I had run the commands
above, and I found it flooded with the errors reported below.

I'm assuming these errors come from plasmashell and I guess they happen all the
time regardless, but I happened to see them because I restarted plasmashell
from a terminal and therefore its output ended up in the terminal.


STEPS TO REPRODUCE
1. In a terminal run:
```
killall plasmashell
kstart5 plasmashell
```
2. wait 
3. look at the terminal

OBSERVED RESULT

The following errors:

```
 libva error: /usr/lib/dri/i965_drv_video.so init failed                      
                                                  ✔ 
Fontconfig error: Cannot load default config file: No such file: (null)
[655933:655933:1223/123839.501853:ERROR:interface_endpoint_client.cc(694)]
Message 0 rejected by interface blink.mojom.WidgetHost
[655977:655977:1223/124834.017041:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RED_8, share_between_threads: 0,
gmb_type: shared_memory
[655977:655977:1223/124834.017174:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RG_88, share_between_threads: 0,
gmb_type: shared_memory
[655977:655977:1223/124834.022548:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RED_8, share_between_threads: 0,
gmb_type: shared_memory
(...dozens like these...)
[655977:655977:1223/124919.512658:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RG_88, share_between_threads: 0,
gmb_type: shared_memory
[655977:655977:1223/125627.482092:ERROR:gl_utils.cc(319)]
[.RendererMainThread-0x2fa401cd8e00]GL Driver Message (OpenGL, Performance,
GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels
[655977:655977:1223/131649.658829:ERROR:gl_utils.cc(319)]
[.RendererMainThread-0x2fa401edb800]GL Driver Message (OpenGL, Performance,
GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels
[655977:655977:1223/131649.689123:ERROR:gl_utils.cc(319)]
[.RendererMainThread-0x2fa401edb800]GL Driver Message (OpenGL, Performance,
GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels
[655977:655977:1223/131649.696849:ERROR:gl_utils.cc(319)]
[.RendererMainThread-0x2fa401edb800]GL Driver Message (OpenGL, Performance,
GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no
longer repeat)
[655977:655977:1223/131654.189610:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RED_8, share_between_threads: 0,
gmb_type: shared_memory
(...dozens of these...)
[655977:655977:1223/160448.658499:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RED_8, share_between_threads: 0,
gmb_type: shared_memory
[655977:655977:1223/160448.658650:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RG_88, share_between_threads: 0,
gmb_type: shared_memory
[655977:658882:1223/162404.370004:ERROR:vulkan_swap_chain.cc(442)]
vkAcquireNextImageKHR() hangs.
[655977:655977:1223/162404.371568:ERROR:gpu_service_impl.cc(988)] Exiting GPU
process because some drivers can't recover from errors. GPU process will
restart shortly.
[655933:655933:1223/162404.403828:ERROR:gpu_process_host.cc(990)] GPU process
exited unexpectedly: exit_code=8704
libva error: /usr/lib/dri/i965_drv_video.so init failed
[662392:662392:1223/183742.361005:ERROR:shared_image_factory.cc(575)] Could not
find SharedImageBackingFactory with params: usage:
Gles2|Raster|DisplayRead|Scanout, format: RED_8, share_between_threads: 0,
gmb_type: shared_memory

```

I guess you can see these errors in some log without restarting plasmashell
from a terminal.

EXPECTED RESULT

No errors.

SOFTWARE/OS VERSIONS

Operating System: Manjaro Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.100.0
Qt Version: 5.15.7
Kernel Version: 6.0.8-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-1065G7 CPU @ 1.30GHz
Memory: 7.3 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Plus Graphics
Manufacturer: LENOVO
Product Name: 81WE
System Version: IdeaPad 3 15IIL05

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