On Sun, 2015-08-02 at 17:55 +1200, Chris Edwards wrote: > Hi all, > > I've recently installed Debian Jessie 64-bit on my (admittedly rather > > old) dual Opteron workstation, and I'm experiencing pretty bad > performance in X11. Certain redrawing operations are extremely slow, > with delays of half a second or more, and Xorg consumes a lot of CPU > time. I've wondered if it's particularly a problem for older X > clients > using bitmapped fonts, as it's very noticeable when running xosview > and > when dragging tabs and invoking menus in Notion (window manager), but > > menu drawing in GIMP is also very slow. The machine has 8 GiB of RAM > and only a couple are being used. It was formerly running Ubuntu 12
Do you have working 3D acceleration? If you are using GNOME (or a similar environment) it sounds like it's falling back to using software 3D rendering. -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 6FAB5CD5
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