Comment #53 is also reproducible for me, on openSUSE 12.1 with KDE 4 and an ATI Radeon card and driver.
Run xterm, "ls -l" of a large directory, scroll back a couple of times, and you see
some lines missing.
The workaround:
KDE control center -> Desktop effects -> Advanced -> Compositing type.
Set the value to Xrender instead of OpenGL.
The setting is stored in $HOME/.kde4/share/config/kwinrc.
Comment #53 is also reproducible for me, on openSUSE 12.1 with KDE 4 and an ATI Radeon card and driver.
Run xterm, "ls -l" of a large directory, scroll back a couple of times, and you see
some lines missing.
The workaround: kde4/share/ config/ kwinrc.
KDE control center -> Desktop effects -> Advanced -> Compositing type.
Set the value to Xrender instead of OpenGL.
The setting is stored in $HOME/.