andre_debian@... composed on 2015-08-16 23:40 (UTC+0200): > Yes, the mouse works fine on another Linux Wheezy, > with kde-trinity 3.5 : I can resize the windows. What is it you are using now, Jessie? > How to reinstall kde -trinity 3.5 ? Which commands ? > I think that it is not properly installed... Maybe it's not Trinity but the driver not (properly) installed. Do you have both xserver-xorg-input-evdev and xserver-xorg-input-mouse installed? Maybe the solution is to force a switch from the one in use (according to Xorg.0.log) to the other. Jessie is probably using evdev as here, Wheezy more likely mouse. -- "The wise are known for their understanding, and pleasant words are persuasive." Proverbs 16:21 (New Living Translation) Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/