Re: [Emc-users] Mesa 7i93 with Dell E6430 laptop

Tue, 09 Jan 2018 16:53:44 -0800

I do a lot of testing on a lenovo W530 with mesa Ethernet cards.  I have only had 1 situation where communication was lost.  (dmesg showed the nic disconnecting..)
Run a lot of real hardware with it.  Amazing - never would have thought linuxcnc would advance to this level. 

(don't mute the speakers or turn the keyboard light on though..)

sam

On 01/09/2018 05:07 PM, Peter C. Wallace wrote:

On Tue, 9 Jan 2018, Ralph Stirling wrote:


Date: Tue, 9 Jan 2018 22:50:35 +0000
From: Ralph Stirling <ralph.stirl...@wallawalla.edu>
Reply-To: "Enhanced Machine Controller (EMC)"
    <emc-users@lists.sourceforge.net>

To: "Enhanced Machine Controller (EMC)" 
<emc-users@lists.sourceforge.net>

Subject: Re: [Emc-users] Mesa 7i93 with Dell E6430 laptop

It looks like I have things working now.  I made sure avahi-daemon
was also shut off, and a reboot seemed to clean things up.
Network manager is now sticking to wlan0 and leaving eth0 alone,
and I'm getting no errors from LinuxCNC.

I like this package of the laptop and the 7i93 very much.  This will
work well for my manufacturing class.  My past efforts with various
form-factor PC's with parallel ports were a pain with a class of 16
students.  Now I just need to get Debian dual-booting along side of
Windows on the laptops.

Thanks for the help, Peter.

-- Ralph



Network manager has all sorts of surprises but all my test systems 
have it enabled and it doesnt muck about with settings. I guess it 
needs to settle down or something...




I just added a cheap SSD for Linux (the E6420 has a free bay) to avoid 
possibly breaking my windows drive (and even then the linux install 
put grub on the windows partition sigh).





________________________________________
From: Ralph Stirling
Sent: Tuesday, January 9, 2018 2:16 PM
To: Enhanced Machine Controller (EMC)
Subject: RE: [Emc-users] Mesa 7i93 with Dell E6430 laptop

- Kernel version is: #1 SMP PREEMPT RT Debian 3.2.96-3
- OS is Debian Wheezy 7.11.
- LinuxCNC is 2.7.11 uspace
- /etc/network/interfaces has:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
  address 192.168.1.1
  hardware-irq-coalesce-rx-usecs 0

- all installed from instructions at:

https://forum.linuxcnc.org/9-installing-linuxcnc/33596-mesa-7i93-7i33-7i37-easiest-install 



No changes to power source (plugged in the whole time), nor
brightness changes.

Now, running through things again after lunch, I find that
eth0 no longer has an IP address, and I have a bunch of
"eth0: no IPv6 routers present" errors in dmesg.  I thought
I had stopped those earlier by adding these lines to /etc/sysctl.conf:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_ipv6 = 1

and running sysctl -p.  It seems that was insufficient though.
I think the real culprit, though, is that I see messages about eth0
in /var/log/syslog from NetworkManager.  The debian documentation
indicates that NetworkManager will leave alone interfaces specified

in /etc/network/interfaces if manage=false in 
/etc/NetworkManager/NetworkManager.conf.

It appears this isn't true though.  Any tips on disabling NetworkManager
for eth0, while allowing it to manage wlan0?

Thanks again,
-- Ralph
________________________________________
From: Peter C. Wallace [p...@mesanet.com]
Sent: Tuesday, January 9, 2018 1:47 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Mesa 7i93 with Dell E6430 laptop

On Tue, 9 Jan 2018, Ralph Stirling wrote:


Date: Tue, 9 Jan 2018 20:52:10 +0000
From: Ralph Stirling <ralph.stirl...@wallawalla.edu>
Reply-To: "Enhanced Machine Controller (EMC)"
    <emc-users@lists.sourceforge.net>
To: "emc-users@lists.sourceforge.net" <emc-users@lists.sourceforge.net>
Subject: [Emc-users] Mesa 7i93 with Dell E6430 laptop

I am running a Mesa 7i93 with a Dell laptop, and after finally
getting all the networking issues straightened out have axis
up and running.  I am getting a long series of errors as soon
as I try to jog, though.  I suspect I have some long latency
(got a real time error at startup), but I'm not sure that explains
these errors.  Any advice on what's going on and how to fix it?

This laptop is using wifi for network access.

Thanks,
-- Ralph




I've run a 7I92 for a day or so without error on a Dell E6420 +wifi 
which
should be similar (it will have real time errors if you change the 
backlight

brightness or switch from battery/line power)

First what OS are you running?


Second, have you disabled IRQ coalescing? (neccesary if you have a 
Intel MAC)

(check with ping times)

Also what LinuxCNC version


[run-time errors from linuxcnc]
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing read! iter=23357)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing write! iter=23357)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing read! iter=23358)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing write! iter=23358)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing read! iter=23359)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing write! iter=23359)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing read! iter=23360)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing write! iter=23360)
hm2_eth: ERROR: sending packet: Invalid argument
hm2/hm2_7i93.0: error finishing read! iter=23361)
hm2/hm2_7i93.0: error finishing read! iter=23361
hm2/hm2_7i93.0: error finishing read! iter=23357)

hm2/hm2_7i93.0: error finishing write! iter=23357)

hm2/hm2_7i93.0: error finishing read! iter=23358)

hm2/hm2_7i93.0: error finishing write! iter=23358)

hm2/hm2_7i93.0: error finishing read! iter=23359)

hm2/hm2_7i93.0: error finishing write! iter=23359)

hm2/hm2_7i93.0: error finishing read! iter=23360)

hm2/hm2_7i93.0: error finishing write! iter=23360)

hm2/hm2_7i93.0: error finishing read! iter=23361)

hm2/hm2_7i93.0: error finishing read! iter=23361

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Peter Wallace
Mesa Electronics

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Mesa Electronics

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