Package: general Severity: important X-Debbugs-Cc: casa...@acm.org Dear Maintainer,
After uprading my laptop (Lenovo L570) from Debian 11 to Debian 12, the system appears to handle input devices (keyboard, trackpad, mouse) inconsistently. Initially, everything works fine, but progressively symptoms such as those listed below occur with increasing frequency, till the system is nearly unusable: 1) When typing text, the cursor suddenly relocates to another position, typically several lines upwards. 2) The mouse buttons have no effect (e.g. to close a window, or to activate a menu entry in an application or the taskbar, or to move to a different workspace). It is then necessary to use the buttons on the trackpad -- then the mouse functions again. 3) When resizing a window with the mouse, the handles have either no effect at all, or cannot be released to stop resizing. Again, clicking on the trackpad "resets" the mouse. 4) Contextual menus suddenly pop up without having been invoked. Again, clicking somewhere is required to make them disappear. 5) When using a terminal window, the keyboard suddenly stops working. I have found no other solution than killing the window and reopening another one. 6) On a variety of applications (terminal window, browser, editor), the system sets itself in a state as if the user wanted to make a copy of a text region. Moving the mouse of trackpad selects a portion of the text on the screen. 7) Buttons on mouse and trackpad stop operating; shutting down the computer can only be achieved with a forced shutdown (long press on on the on/off hardware button). The problem takes place with Gnome, classic or not, on X.org or not, and on XFCE. I had upgraded three other old machines (3 models from 2 other manufacturers) to Debian 12 -- none exhibited that problem so far. I would appreciate any kind of information about how to put things in order.
