From 8bff156a682dbbff76aa49f8a682c5c4814aa5bf Mon Sep 17 00:00:00 2001
From: Eberhard Beilharz <eb1@sil.org>
Date: Mon, 4 Nov 2024 17:44:22 +0100
Subject: [PATCH] fix(linux): set environment variable for rendering of
 downloads dialog

This works around a problem in webkit2gtk where the download dialog
sometimes only renders a blank screen. Setting the environment variable
seems to help, not only in the cases that the issue describes (with a
NVidia graphics card), but also in my testing in a VM.

Fixes: #12587
Cherry-pick-of: #12616
---
 linux/keyman-config/km-config | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/linux/keyman-config/km-config b/linux/keyman-config/km-config
index 641fb96470..e099c59eda 100755
--- a/linux/keyman-config/km-config
+++ b/linux/keyman-config/km-config
@@ -2,6 +2,7 @@
 
 import argparse
 import logging
+import os
 import sys
 import gi
 
@@ -66,6 +67,10 @@ if __name__ == '__main__':
     elif args.url:
         download_and_install_package(args.url)
     else:
+        # Workaround for bug in webkit2gtk (#12587)
+        if not 'WEBKIT_DISABLE_DMABUF_RENDERER' in os.environ:
+            os.environ['WEBKIT_DISABLE_DMABUF_RENDERER'] = '1'
+
         w = ViewInstalledWindow()
         try:
             w.run()