Mesa 7i96s not connecting

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20 Oct 2025 23:58 #336788 by Meleon
Mesa 7i96s not connecting was created by Meleon
let me start by saying Hi and I am very new to linux and linuxcnc.
I've been trying to 2 days to get mesa mesa 7i96s to connect to linuxcnc. 
I am running debian 13 Xfce and I have kernel-vers -v: #1 SMP PREEMPT_RT Debian 6.12.48-1 (2025-09-20)
I have wired connection 1 Ipv4 set to manual and address set to 10.10.10.11 (routes set to use this connection only for resources on its network)
On the 7i96s I have the jumper set for eeprom. 
I can ping the card at 10.10.10.10 and it appears to respond (yellow power led and green users leds lit)

but when I to launch my config file I get red led's on cr6 and cr7
and linuxcnc shuts down and gives this debugging 

Note: Using POSIX realtime
hm2_eth: rtapi_app_main: Resource temporarily unavailable (-11)
./7i96s.hal:9: waitpid failed /usr/bin/rtapi_app hm2_eth
./7i96s.hal:9: /usr/bin/rtapi_app exited without becoming ready
./7i96s.hal:9: insmod for hm2_eth failed, returned -1
1868
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime

I am not sure what I am missing...
 

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21 Oct 2025 00:04 #336789 by PCW
Replied by PCW on topic Mesa 7i96s not connecting
if you get CR7 (/DONE) illuminated at any time after initial power on,
you likely have a marginal 5V supply. (CR7 is only illuminated during a
power on reset)
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21 Oct 2025 00:05 #336790 by tommylight
Replied by tommylight on topic Mesa 7i96s not connecting
What does
ip a
in a terminal return?
Also, did you set the IP to 10.10.10.10 in the wizard? By default it is at 192.168.1.121
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21 Oct 2025 00:13 #336791 by Meleon
Replied by Meleon on topic Mesa 7i96s not connecting
In the Pncconf wizard? yes I changed it to 10.10.10.10
ip a returns
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 90:b1:1c:8d:36:5f brd ff:ff:ff:ff:ff:ff
altname enp0s25
altname enx90b11c8d365f
inet 10.10.10.11/8 brd 10.255.255.255 scope global noprefixroute eno1
valid_lft forever preferred_lft forever
inet6 fe80::147c:8a67:beeb:e22a/64 scope link noprefixroute
valid_lft forever preferred_lft forever

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21 Oct 2025 00:16 #336793 by Meleon
Replied by Meleon on topic Mesa 7i96s not connecting
Thst is possible I suppose. I am using a charging block and a modified usb cable to provide power. its measuring 5.1 volts but I can't figure out how many amps.

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21 Oct 2025 00:26 #336796 by PCW
Replied by PCW on topic Mesa 7i96s not connecting
As I mentioned before, If you ever see CR7 illuminated it means power failure.
Power failure on a 7I96S means the 3.3V supply has dropped below about 3V.
This in turn means that the 5V power has dropped below about 4V (even for a few ms)

 

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21 Oct 2025 00:28 #336797 by Meleon
Replied by Meleon on topic Mesa 7i96s not connecting
I'll see if I can find a better power supply

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21 Oct 2025 11:20 #336815 by rodw
Replied by rodw on topic Mesa 7i96s not connecting
Use a Meanwell power supply. Say a MDR-15-5 which is 2.4 amps

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