Public bug reported: I have crashes of kmail when displaying mails (e.g. GMX info mail). After some research I found that it is related to the qtwebengine when using nouveau driver.
The reason is, that Qt WebEngine uses multi-threaded OpenGL, which nouveau does not support. It also crashes when running on wayland, the cause is not yet known. Work around these issues by not doing GPU-accelerated rendering in such cases. This happens on 18.04.3 (bionic), 19.10 (eoan) and 20.04 (focal). See also: https://bugreports.qt.io/browse/QTBUG-41242 There was a patch made: Antonio Larrosa (25 Oct '16 12:04 PM): "I made the disable-gpu-when-using-nouveau-boo-1005323.diff patch (attached) for the webengine openSUSE packages. It checks if the openGL driver vendor is "nouveau" and if it is, it disables the GPU in the web engine context . This fixes the crashes in my test system. The patch also adds two environment variables, QT_WEBENGINE_DISABLE_GPU, which forces disabling the GPU and QT_WEBENGINE_DISABLE_NOUVEAU_WORKAROUND, which disables the nouveau detection code, just in case anybody wants to test newer nouveau releases in the future to see if they behave properly." I adapted this patch for bionic (5.9.5+dfsg-0ubuntu2) and attach the modified patch (disable-gpu-when-using- nouveau_boo_1005323_qtwebengine_5.9.5.diff) ** Affects: qtwebengine-opensource-src (Ubuntu) Importance: Undecided Status: New ** Tags: crash nouveau ** Patch added: "check for nouveau driver on qtwebengine and disable gpu in this case, can be overridden by envionment variable" https://bugs.launchpad.net/bugs/1857121/+attachment/5314296/+files/disable-gpu-when-using-nouveau_boo_1005323_qtwebengine_5.9.5.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1857121 Title: Qt WebEngine crashes with nouveau in Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtwebengine-opensource-src/+bug/1857121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
