A customer bought a Dell Precision T7500 recently. Beautiful machine, awesome power, running CentOS5. The videocard in the machine was the first I ever saw with nothing but DisplayPort connectors: no old-style VGA, no DVI, no HDMI. At first, a 1680x1050 screen was connected using a DisplayPort-to-DVI connector, and that worked flawlessly. But in came a new beast: a 30-inch 2560x1600 screen. The standard DVI cable can't handle this resolution, and neither can the DisplayPort-to-DVI connector, so even a dual-link DVI cable doesn't solve this issue. And I'm sure you'll agree: running such a beauty at 1920x1200 seems a waste. I tried connecting the monitor directly using a DisplayPort cable, which can easily handle the maximum resolution, but the EL5/CentOS5 xorg-x11-drv-ati driver is too old: version 6.6.3 (with some backports from 6.12.2) doesn't detect DisplayPort-connected monitors correctly. Compiling a newer driver isn't easy, because the newer ones require Xo...
plenty of grains to pick