Phoronix: Today, Delayed GPU Switching Comes To Linux
Two days ago we reported on hybrid graphics coming to Linux in a crude form that allowed switching between graphics processors on notebook computers that utilize dual graphics processors, one that's meant to deliver the best energy efficient performance while the other GPU is for maximizing the graphics performance in demanding environments. Just 24 hours after this kernel patch hit the Internet it already went through four revisions by Red Hat's David Airlie, which delivered better switching and greater notebook compatibility...
Something is going on guys... some kind of virus is spreading among the opnsource community... can't be explained otherwise... one ton of great news every day is just too much ... but I'm sure we can handle them...
Congratulations for all the great work that made this possible!!!
Thanks to Albert Vilella for his blog (http://linux-hybrid-graphics.blogspot.com/) and perseverance!
Thanks to David Airlie for his astonishing rate of work!
If somebody could make some "How to" to test this on Fedora 12 (kernel 220.127.116.11-174.2.3.fc12.x86_64) it would be great, or better some .rpm package. I'm too inexperienced to try to build my own kernel with this patch (not that I didn't try...)
I have a normal desktop system, ASRock board with a IGP (Radeon HD3200), but also a Radeon HD 4770 is installed in the PCIe slot.
BIOS is configured to boot VGA from the PCIe.
What I'd like to know: Would it be possible to abuse this tool to reduce power consumption of the system by completly deactivating the IGP that's onboard?
I would like to know the same thing myself.
If the IGP is not completely disabled, it would draw power and also produce unnecessary heat. The heatsink gets pretty hot.
And conversely, if one does not need the dedicated graphics for a while, it would be good if there was some way to disable it completely without having to physically remove it.