I am going to have to get caught up on the development chain. I dropped off for a while while I pursued my MS degree and concentrated on paying the bills, but I am going to have to get back into the thick of coding. I am going through withdrawal. Management courses and systems administration tasks are enough to drive any good developer to blog on facebook.
On Fri, Feb 25, 2011 at 3:56 PM, Dave Airlie <airlied at redhat.com> wrote: > On Fri, 2011-02-25 at 15:42 -0500, Phillip Susi wrote: > > On 2/25/2011 3:03 PM, Dave Airlie wrote: > > > How do you know its running in an infinite loop? > > > > Because the gpu temperature is rising to over 80 C, so it is busy doing > > something. And this is booting with init=/bin/bash, so NOTHING is > > running that could be keeping it busy. > > So you made an assumpution you knew how graphics cards worked and > derived a theory, unfortunately the assumption was wrong. > > a GPU doing nothing still runs at a high clock speed, clocking the > memory bus for the video RAM at full tilt. We don't have reliably > dynamic power management yet so at the moment manual clock switching is > all we have. > > Even if the CP was running in a tight loop it consumes no power compared > to the memory interfaces. > > > > > I had been under the impression that since ati/amd started releasing > > documentation a few years ago that the mesa driver had managed to > > implement its own firmware. I sounds more like it has ripped the > > firmware out of the proprietary driver and reverse engineered the > interface? > > Yes and no. AMD supplied firmware from their driver with the interfaces > documented like they have done since r100. You could write your own > microcode after you RE and write an assembler for the CP core, but so > far nobody has done this and we have a lot of other areas to improve > before most of the developers would care. > > Dave. > > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20110225/5acec452/attachment.html>
