I think I have the information on this issue. The left button may not work because the mouse generates a constant pressing a service button, e.g., as described here (https://bugs.launchpad.net/ubuntu/+source /xserver-xorg-input-evdev/+bug/615892/comments/13).
my mouse have "hidden" button 20-21-23, that "click" when I switch profiles (see attachment for evtest log, problem events 287-288-289). when all button is released, then mouse work as expected. in other cases, left button does not work anywhere else, although its operation can be seen in xinput, for example. I was able to get out of situation just by turning off the service button in the xorg.conf (writing zeros in their place): Section "InputClass" Identifier "Mouse Remap" ... Option "ButtonMapping" "1 2 3 4 5 0 0 8 9 10 11 12 13 14 15 16 17 18 19 0 0 0 0 0" ... EndSection ** Attachment added: "evtest log" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1316873/+attachment/4486552/+files/madcatz_evtest.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1316873 Title: Left mouse button stops working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1316873/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs