At 09:35 PM 5/22/2010, you wrote: >On Saturday 22 May 2010, Michael Jones wrote: >In fact, I have found that even the nv driver makes the latency >figures suck. >Not nearly as bad as the nvidia drivers though. When I first built up my >micromill, I was not able to get it to move more than 3 or 4 IPM without >stalls, so on IRC one night someone suggested I try the nv driver, so I >converted it back to use the nv driver. > >It was enough better that I could get it into the teens per minute before the >stalls started. And I noticed the motors sounded a little more musical but >the tones weren't really all that pure. > >Someone a few weeks later said I should try the vesa driver, which does limit >the screen resolution a bit but its usable, and my 20 tpi X and Y tables can >now run at 25 IPM, which quite pure sounding tones, no raggedness to them at >all. > >The Z was another surprise, as I had excised the original 20 TPI screw that >ran up the back of the post, in favor of a 10 tpi that by turning the gear >head 90 degrees, allows clearance past it to grab the Z sled about 2" in >front of the post where the bolt is anchored solidly and doesn't turn. With >a 425 motor on the OEM lashup, the sled was bound on the post and incapable >of running a bathroom scale past about 5 pounds before the 425 started >cogging in place. > >Now, with the screw in front of the post, and the nuts that drive it sitting >in bearings located above the post and inline with the bolt, a 17 tooth >pulley on the 425, and a 42 tooth pulley turning the nuts, I can run it down >on the bathroom scales to 155 lbs before the motor starts cogging. And I >can, if nothing gets in the way, run the Z axis at 34 IPM if the post is >relatively clean & lubed with vactra. > > >I can't find anything on this, but will the NV drivers actually load > >some form of OpenGL so axis will run or am I just spinning my wheels? > >I don't know as openGL runs with the vesa driver, and I'll let Alex confirm >or deny that axis needs openGL. Whatever that answer is, its running the >machine very well, on a 9 year old video card. Yes, the video could be >better, but the machine runs great. > > >I don't think I loaded the proprietary Nvidia Drivers last time (I > >can't be sure, it was a long time ago) and axis ran just fine. > > > >Recommendations? > >Try the vesa driver, its much kinder to the latency than anything else I have >ever tried.
Do we have any recommendations for a video card and driver that doesn't cause problems. I loaded a machine at work with Ubuntu 10.4 LTS. I had two ATI cards on hand, a Rage, and a very high end ATI that had it's own power plugin from the computer's power supply. I couldn't get either of them to work worth doo-doo using either the generic drivers or the so-called "ATI" something or other drivers. Screen had dropouts, color weirdness, would flicker occasionally and other oddness. Since neither board would work very well, I ended up with an Nvidia board. But with the report problems of Michael and Gene, what other options do we have? Mark ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
