Steps to reporduce: start cheese turn the flashlight in settings on turn on WM effects (compositing) take a shot: mouse unable to click on window buttons and to move windows version xfwm 4.12.0git.badd196 cheese version 3.10.2 Video - Nvidia 331. ForceCompositingPipeline = on
Cannot reproduce, works fine here. Looks like a bug in cheese that keeps an active grab on the pointer, not xfwm4 fault. What makes you think it's a bug in xfwm4?
Please connect remotely to the host (ssh) and attach gdb to the xfwm4 process and capture a few backtrace while the problem occurs. Ideally, capture a few backtraces taken every few seconds. (gdb) bt ... (gdb) cont <ctrl-c> (gdb) bt ... (gdb) cont <ctrl-c> (gdb) bt ...
SSH: "gdb xwfm4 export DISPLAY=:0" says "No stack" after entering bt. Maybe I do something wrong. Tested on another user, with xfwm from trusty ppa - the bug exists. Maybe it is cheese's bug.
(In reply to yanpaso from comment #3) > SSH: "gdb xwfm4 export DISPLAY=:0" says "No stack" after entering bt. Maybe > I do something wrong. You don't need to run xfwm4, you need to attach to the running process. gdb -p $(pidof xfwm4) > Tested on another user, with xfwm from trusty ppa - the bug exists. Maybe it > is cheese's bug. Could be pretty much anything, that's why it must be investigated.
Created attachment 6192 gdb ssh This is what gdb printed after taking screenshot with flashlight
Cannot reproduce on updated linux OS
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