Duncan Webb wrote: > Ville Syrjälä wrote: >> On Mon, Jan 12, 2009 at 06:09:00PM +0100, Duncan Webb wrote: >>> Ville Syrjälä wrote: >>>> On Sun, Jan 04, 2009 at 05:55:57PM +0100, Duncan Webb wrote: >>>>> Duncan Webb wrote: >>>>>> Hi all, >>>>>> >>>>>> Does anyone know how to enable the S-Video output of the Matrox G400 >>>>>> DualHead MAX with recent 2.6 kernels? >>>>> The answer to this is clear when looking at the maven_init in >>>>> gfxdrivers/matrox/matrox_maven.c function. The code is looking for >>>>> /sys/class/i2c-dev which has been superseded by i2c-adapter so it cannot >>>>> find the frame buffer device. >>>> I don't think i2c-dev has gone anywhere. At least I still have it w/ >>>> 2.6.28. Maybe you just don't have the i2c-dev module loaded. >>> I seems to have come back again, looks like if disappeared at about >>> 2.6.17 and came back again at 2.6.19. Of course I could have messed up >>> my kernel configuration. >> Perhaps. I don't have such old kernel trees around anymore but I would >> expect that I would have used at least some kernels from that era. >> >>> May I ask which versions of DirectFB and linux-fusion you are using? >> Latest git. > > Now that I have DirectFB working fine, I am wondering if there are any > problems with SDL and DirectFB. I have a small pygame test program, it > was to test the changes from Numeric and numpy. > > When I run this program using DirectFB as the SDL driver the CPU usage > is about 50%, which is rather a lot for 1 blit per second. When the same > program is run on X it uses somewhere betweeen 0 and 0.5% CPU. > > What I would like to do is to try to track down the problem. Are there > any SDL and DirectFB test programs about that will the same thing?
Some more information... I tracked down a SDL tutorial: http://lazyfoo.net/SDL_tutorials/lesson02/index.php Built the program and then ran this with the environment: export SDL_DIRECTFB_MGA_OVERSCAN=1 export SDL_VIDEODRIVER=directfb export SDL_DIRECTFB_MGA_STRETCH=1 The CPU usage is 67% during the call to SDL_sleep. To me this implies that directfb is using all the CPU just redrawing the screen. Any ideas what this problem could be or where to look? TIA Duncan _______________________________________________ directfb-users mailing list directfb-users@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
