** Description changed: If I plug my laptop (Sony VAIO VGN-FS285M) to the mains, graphics performance drops by a ten fold. Playing a simple, low resolution XviD video file is choppy and 3D is also very poor. Graphics performance is actually much better when laptop's unplugged and running on its battery, and the CPU is running at 800 MHz (as opossed to a max of 1733 MHz). + Battery life is also very poor. On Breezy, Dapper and Windows I could + easily do 90 minutes, this is reduced to 20 minutes now. + I am running Kubunty Edgy, clean installation (from yesterday) and all official updates installed. The only difference is that I'm running KDE 3.5.5 from the Kubuntu repositories (I don't see how KDE can affect this, but I also tested on fluxbox for the sake of it with the same - results). + results). I am running the stock generic kernel. This happens using both "nvidia" and "nv" drivers on X. CPU performance doesn't seem affected; for example, encoding to XviD is as fast as it was when running Dapper or Breezy. IO performance seems right as well. Only actual video performance seems affected. The laptop has a Pentium M 1.7 processor on a Centrino chipset, 1 gig DDR 333 RAM, and nVidia GeForce 6200Go graphics.
** Tags added: performance -- Poor graphics performance when Laptop's powered https://launchpad.net/bugs/72185 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
