On Sun, Feb 21, 2010 at 9:46 AM, Dave Witbrodt <[email protected]> wrote: > Alex Deucher wrote: >> >> On Fri, Feb 19, 2010 at 10:57 PM, Dave Witbrodt <[email protected]> >> wrote: > > [...] >>> >>> I tried a week ago, and when I got black screens I gave up too quickly >>> and pulled the HD 5750, replacing it with my slightly older HD 4850. >>> This time I also got a black screen, but (as before) Windows Vista works >>> perfectly, so I know the hardware is not defective. >>> >>> As it turns out, I use a KVM device that allows me to switch between 4 >>> machines using Dsub VGA connectors. There are no VGA connectors on this >>> HD 5750, so I was using a DVI-to-Dsub converter that came with the card >>> so I could continue to switch between machines. After logging in via >>> SSH, and making sure I saved 'dmesg' and 'Xorg.0.log', I thought about >>> that converter possibly messing up the situation. >>> >>> I turned the monitor off, plugged in a DVI cable, and rebooted. Voila! >>> Working KMS! No acceleration, of course, but I'm just glad to see the >>> ball toward open source Evergreen support starting to roll! Switching >>> between X and VT works fine, as well. And (unlike last week) I am >>> getting the proper 1920x1200 resolution for my monitor. >>> >> KVMs are always trouble. If you use one, your best bet is to force an >> X configuration via config file as they often prevent the driver from >> detecting any outputs. The UMS driver lights up one of the ports if >> nothing is detected, you just happened to get lucky that it lit up the >> right port for you, with KMS, we don't. > > My KVM worked fine with KMS + HD 4850. There must be features missing in > the Evergreen KMS compared to the support for earlier devices. > > At any rate, using DVI instead of Dsub cured my black screen issues. I > still use the KVM, but have to manually switch the monitor between Dsub and > DVI.
Ah, ok. It could be an issue with the load detection code then. I'll take a look. Alex _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
