On Mon, 2026-07-13 at 08:41 +0200, Stefano Crocco wrote: > Hello to everyone, > for the last few weeks, I've randomly encountered what I assume is a > bug in > Konqueror: I'd like to fix it, because it's rather annoying, but I > don't know > how to debug it to find its cause. > > The issue is that sometimes Konqueror completely freezes: none of its > windows > respond to mouse or keyboard. The only way to go on is to kill it. > It's not a > frequent issue: it usually happens once a day or so. Once it has > happened, > however, it's likely to happen again in a short time. > > I attach a backtrace by attaching gdb to the Konqueror instance once > the > freeze happens. As you can see, it contains almost nothing from > Konqueror > itself: just two calls near the bottom, the last of which is a call > to > QApplication::exec(). All other function calls are either inside KDE > Frameworks or Qt: I'd almost think this is not a problem with > Konqueror if it > were not for the fact that I'm only experiencing the issue with > Konqueror.
Are you sure freeze happens in that thread? The stacktrace is from the rendering thread. Does Konqueror window get "grayed out" by KWin when it freezes? If it doesn't I'd think the freeze happens in another thread. > Given the randomness of the freezes and the fact that the backtrace > contains > almost no Konqueror-specific calls, I really have no ideas on how to > proceed to > debug the issue, and I really don't even know what to search on the > web. Do > you have any advice? > > Thanks in advance > > Stefano
