Created attachment 103345 [details] kmail strace dump Sometimes as much as from resizing the sidebar, or going through unread mail filter...not just once a day, every time kmail is in use it will crash out, needs to be restarted and if i finish sending email without crash i consider it good try. It could be nouveau driver related or maybe not... i'm adding strace dump from last two crashes.
Please add the backtrace for the crash. For more information, please see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
Adding the backtrace.
Created attachment 103454 [details] backtrace
Comment on attachment 103454 [details] backtrace Just to add what i was doing when kmail crashed (this time). Changed message preview pane to the "next to message list" from "below" and tried to resize side pane.
The crash is indeed in the nouveau driver. This driver does not yet support threaded OpenGL that QtWebEngine uses. Please report this issue directly to nouveau developers via https://bugs.freedesktop.org/
It is already reported, see https://bugs.freedesktop.org/show_bug.cgi?id=91632