On Sunday 23 May 2010, Mark Wendt (Contractor) wrote: >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
I believe I have an nvidia card in my machines driver box. Running the vesa driver. Another, lesser powered box I use for the sacrificial 'goat.coyote.den' machine, has an ATI 9200SE AGP card in it, and if I ever get around to motorizing the feed on my resawing bandsaw with it, I believe it will be fine with whatever drivers the 8.04 LTS install runs it with. That machine atm has 10.4 on it, but it doesn't have the iron to run 10.4 at all well. Its only a 1ghz athlon with 384 megs of ram, so its limits are pretty well demoed when they have been hit. It turns into a dog with only one good leg once it starts swapping. I have not tried to force that install into the vesa box, but it might help a small bit as vesa doesn't seem to use as much memory. > >--------------------------------------------------------------------------- >--- > >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users > -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Tis man's perdition to be safe, when for the truth he ought to die. ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
