..reminds me at a bug in intel Drivers i had trouble with on Linux-Mint cinnamon:
try this (quote from a forum http://forums.linuxmint.com/viewtopic.php?f=221&t=146477 ): ************************************************************* I have a Intel GPU, and i have these annoying black windows. But you can do it this way: create as root the file /etc/X11/xorg.conf in terminal type ( if you don't have a /etc/X11/xorg.conf ) : sudo touch /etc/X11/xorg.conf open editor in admin mode: gksu gedit /etc/X11/xorg.conf ... and write/copy these lines: Section "Device" Identifier "Card0″ Driver "intel" Option "AccelMethod" "sna" EndSection reboot if that doesn't help do in terminal: rm /etc/X11/xorg.conf to delete it again seems to work ok for me, but i have to test this some days first. update: 10.07.14 ..still working ok! That was the solution for these annoying black pop-up windows!! *********************************************************** Am Montag, den 14.07.2014, 11:08 +0200 schrieb Michael Van Canneyt: > Hi, > > I have a machine on which I'm completely unable to debug GUI programs. > The machine runs Ubunutu 12.04 LTS. > If I try to debug, the whole system (at least X11, later the complete system) > hangs as soon as there is a breakpoint in a GUI event handler. > > It doesn't matter whether I do the debugging in Lazarus or in GDB directly. > > The same program, the same breakpoint on another machine, same OS, works just > fine. > > The sole difference between the 2 machines is the graphics display: > An NVidea card on the machine that is OK, > An on-board Intel chip on the machine that does not work. > > So I'm inclined to suspect a buggy intel graphics driver. > > Has anyone experienced such a situation? If so, I'd appreciate any hints you > may have. > > Michael. > > -- > _______________________________________________ > Lazarus mailing list > Lazarus@lists.lazarus.freepascal.org > http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus -- _______________________________________________ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus