Upgraded 8.04 to 8.10 on an Acer Extensa 3100 laptop with 915/910-based graphics. After logging into KDE 4 I've got the same repeated flickering of the internal LCD display every ten seconds until I disabled KDE4's "detect RandR (monitor) changes". As described above, manually calling XRandR command line tools causes flickering while the driver tries to detect which displays are currently connected.
Upgraded 8.04 to 8.10 on an Acer Extensa 3100 laptop with 915/910-based graphics. After logging into KDE 4 I've got the same repeated flickering of the internal LCD display every ten seconds until I disabled KDE4's "detect RandR (monitor) changes". As described above, manually calling XRandR command line tools causes flickering while the driver tries to detect which displays are currently connected.