LV and RedHat8.0 - Comedi Driver Inaccessible?

[Merkur]

This is the situation:
On a system with Red Hat 7.1 and a board specific Comedi driver LV works just fine and is able to acces the DAQ.
On the same system with Red Hat 8.0 and the Comedi driver LV is not able to access the DAQ anymore.
However programming and accessing Comedi in C manually shows that the Comedi driver works perfectly.
This leaves no doubt about the fact that the trouble is caused by LV itself but I did not find any reference in the net.
I appreciate any help. We originally assumed an error in the Comedi driver first. However intense testing in close cooperation with the manufacturer showed a perfectly stable and working system under any programming language - but LV.

With regards

Thorsten

[Randy_H]

Thorsten,

You are using the exact same version of LabVIEW and Comedi on both Red Hat machines? If so, what versions are you using? Also, what hardware are you using so we can try and reproduce the issue?

Also, you may want to try and post this in the LabVIEW forum because you might get more answers there to this question.

Randy Hoskin
Applications Engineer
National Instruments
http://www.ni.com/ask

[Merkur]

Yes, exactly the same!

Softwareversions:
LV 6.1
Comedi 0.7.58
Comedilib 0.7.15
RedHat 8.0

Hardware:
Siemens Simatic Industrial PC
Intel P4 Celeron 1,7 GHz +128 MByte DDR-SDRAM
40GByte HD, AGP Graphic, OnBoard

I appreciate any help!

Thorsten

[Merkur]

Sorry, small correction to last statement:

The Hardware on which we tested both, RedHat 7.2 and RedHat 8.0, and which showed the described "malfunction" was a
AMD Duron 1200 MHz, 256 MByte RAM, 40GByte HD,
Network interface 100Mbit

The other Siemens system does not work under RedHat 7.2, therefor we were not able to make comparative tests with it 😉