I have an old PC with an old graphics card, NVIDIA GeForce GT 610, that
uses the built-in, open-source nouveau driver.
System specs:
Distro: Linux Mint 22.1 Xia base: Ubuntu 24.04 noble
Kernel: 6.8.0-142-generic
Desktop: Cinnamon v: 6.4.14
Display: x11 server: X.Org v: 21.1.11
Version: 5.16+ (Flathub 5.16)
The workaround, WEBKIT_DISABLE_COMPOSITING_MODE=1, has worked since
2/21/2025. I logged into my old computer and discovered this workaround
no longer works for displaying reports. I have attached an example.
This is the output from the terminal:
$ flatpak run --env=WEBKIT_DISABLE_COMPOSITING_MODE=1 org.gnucash.GnuCash
Gtk-Message: 23:14:42.987: Failed to load module "xapp-gtk3-module"
$
I tried this workaround, WEBKIT_DISABLE_DMABUF_RENDERER=1, and this
fixed the report display.
This is the output in the terminal:
$ flatpak run --env=WEBKIT_DISABLE_DMABUF_RENDERER=1 org.gnucash.GnuCash
Gtk-Message: 23:43:23.661: Failed to load module "xapp-gtk3-module"
$
The Gtk-Message: 23:43:23.661: Failed to load module "xapp-gtk3-module"
had no affect on GnuCash running in Flatpak.
I'm including some URLs that have info that looks pertinent to this issue.
https://www.phoronix.com/news/WebKitGTK-DMA-BUF-Rendering
https://blogs.igalia.com/carlosgc/2023/04/03/webkitgtk-accelerated-compositing-rendering/
Similar workarounds for other apps:
https://github.com/winfunc/opcode/issues/26
https://forums.developer.nvidia.com/t/webkit-tauri-application-white-screen-on-dgx-spark-gpupermission-issues/348741/2
Regards,
Bruce
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