Hi I have same bug on Acer emachines E642 notebook. It has ATI Mobility Radeon HD 4250 videocard. This bug disappeared when I installed new driver "ATI/AMD proprietary FGLRX graphics driver" via "jockey-kde". It seems this is a problem of graphics driver.
Hi I have same bug on Acer emachines E642 notebook. It has ATI Mobility Radeon HD 4250 videocard. This bug disappeared when I installed new driver "ATI/AMD proprietary FGLRX graphics driver" via "jockey-kde". It seems this is a problem of graphics driver.