LENOVO P500

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12 Aug 2021 20:15 #217629 by tommylight
Replied by tommylight on topic LENOVO P500
In general Nvidia graphic cards ruin latency.
AMD is better at it.
Matrox was the best but they do not exist anymore.

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12 Aug 2021 20:22 #217630 by JuniorC
Replied by JuniorC on topic LENOVO P500
Thanks for the info.  I'll do some checking around and see what I can come up with.  So the hdmi to vga adapter shouldn't cause any problems with the latency?

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12 Aug 2021 21:44 #217640 by tommylight
Replied by tommylight on topic LENOVO P500
Nope, the VGA adapter has nothing to do with latency, but makes for a cr@ppy picture ! :)

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16 Aug 2021 23:25 #217924 by andypugh
Replied by andypugh on topic LENOVO P500
Do any of the boards have onboard video?

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17 Aug 2021 04:16 - 17 Aug 2021 04:17 #217948 by JuniorC
Replied by JuniorC on topic LENOVO P500
I'm back. Yes the Asus M3N-HT Deluxe has on board video.  The Lenovo P520 does not.  I did some experimenting with the bios on the Lenovo.  Tommy suggested to disable everything possible.  So O took a jab at it. I couldn't believe all the things that were in the bios that could be disabled. It's better,  I tried two different cards a MSI GeForce GT 1030 2G LP OC and an old dinosaur that I believe came out of a Dell PC. First picture is the MSI latency and the second is the dinosaur latency.  There still needs to be some tweaks made. The Max Jitter seems to spike over 100,000 after running for more than an hour or so. It also seems to spike when shutting down the computer.  Not sure if any of this matters.  The older card seems to be a little less stable, even though it had a little better test. 
 
 
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Last edit: 17 Aug 2021 04:17 by JuniorC.

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17 Aug 2021 07:33 #217961 by andypugh
Replied by andypugh on topic LENOVO P500

I'm back. Yes the Asus M3N-HT Deluxe has on board video. 

Have you tried using it? 

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17 Aug 2021 12:41 #217980 by JuniorC
Replied by JuniorC on topic LENOVO P500
The Asus is has a higher latency test. I have also disabled certain functions that I felt that I did not need. The only thing I did not mess with was over clocking.  Not sure if I would again thing by over clocking. 
 
 
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17 Aug 2021 14:03 #217985 by JuniorC
Replied by JuniorC on topic LENOVO P500
We have a few more older PCs in the scrap bin at work.  I'll do some more experimenting.  Do you guys think the Lenovo or Asus work well with a Mesa setup? I was just try to do a budget build. If the mesa cards are still available I'm willing to get one if needed.  

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17 Aug 2021 22:02 #218025 by andypugh
Replied by andypugh on topic LENOVO P500
What I meant was, have you tried using the machine with onboard video with the onboard video and no graphics card?

You could also try the RTAI kernel, that generally gives better latency.

forum.linuxcnc.org/9-installing-linuxcnc...-cnc?start=20#217918

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18 Aug 2021 15:13 #218077 by JuniorC
Replied by JuniorC on topic LENOVO P500
Andypugh, yes I test the Asus with the onboard video. There was no card installed. 
 
On the Lenovo I'll try to install the RTAI kernel. But I think I'm going to have to reinstall Debian Buster. Because I believe that I gave it a root password. If I'm reading and understanding correctly, I shouldn't have done that.  Give me a little time. I'm learning as I go and work 12 hours a day.  

I greatly appreciate everyone help, knowledge, and patience. 

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