Not an unity/compiz issue I will tell. I have the same thing if I try, like you setting a high resolution on my external monitor (1600 x 900), no issue if both are using 1024x768. Either related to hardware performance or driver then. Reassigning to mesa
** Changed in: unity Status: Confirmed => Invalid ** Changed in: unity (Ubuntu) Status: Confirmed => Invalid ** Package changed: compiz (Ubuntu) => mesa (Ubuntu) ** Changed in: mesa (Ubuntu) Status: Confirmed => New -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/769650 Title: dual monitor runs unusably slow (Asus 1000HE, Intel 945GME) _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp