Kmail 6.3.3 : Black message content window

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1

Hi !
Since latest update, the message content viewer window is … black. Impossible to read email content.
I tried various settings, including changing colors, KDE themes, etc, : no success at all !

Any idea ?

2

Check if you are using Qt 6.9

You might be running into QTBUG-135786

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3

Ah, yes, I am. But Nvidia, not AMD.

4

Seems to also affect Nvidia systems

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5

Issue still there : unable to read messages in KMAIL /Qt 6.9…
Tumbleweed, all latest updates applied.

6

That is to be expected.

This will either require a Qt6.9.1 release, assuming this has the fix, the distribution to apply the fix to their Qt6.9.0 or distributions to release packages built against latest 6.8

All of that is out of KDE’s hands.

Users have reported to be able to work around the bug by setting certain environment variables before launching affected applications.

See the thread linked in the comment before.

Also reported elsewhere is that

QTWEBENGINE_FORCE_USE_GBM=0

works as well

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7

I still have the same issue (latest Tumbleweed, Qt 6.9.2, Nvidia open drivers, wayland), and the message window of kmail is still black. The only way to have a readable message area is to launch kmail like that :

export MESA_LOADER_DRIVER_OVERRIDE=zink akregator
export QMLSCENE_DEVICE=softwarecontext akregator

Am i alone in this case ?

8

Same issue happening to me since this week:

  • Ubuntu 24.04.4 LTS
  • Qt 6.9.2
  • KDE Plasma 6.5.2
  • Kmail Version 6.3.3 (24.12.3)
  • Nvidia Driver Version: 580.126.09
9

Fyi in case this is relevant for someone: my laptop has 2 GPU’s, and changing the GPU from the discrete Nvidia to the internal AMD GPU solved the issue…

So the issue in my case seems related to the recent Nvidia driver updates (580.126.09).