Re: Problem with getting GPIB card to work

Hi Dave.

Thanks for the fast reply 🙂

lspci -v gives :
03:00.0 Communication controller: National Instruments PCIe-GPIB+
      Subsystem: National Instruments PCIe-GPIB+
      Flags: medium devsel, IRQ 255, IOMMU group 11
      Memory at 90004000 (32-bit, non-prefetchable) [disabled] [size=4K]
      Memory at 90000000 (32-bit, non-prefetchable) [disabled] [size=16K]
      Capabilities: [f0] MSI: Enable- Count=1/1 Maskable- 64bit+


lspci -n gives:
root@impedan-trol-47:~# lspci -n
00:00.0 0600: 8086:7d1b (rev 01)
00:01.0 0604: 8086:7ecc (rev 10)
00:02.0 0300: 8086:7d67 (rev 06)
00:04.0 1180: 8086:ad03 (rev 01)
00:06.0 0604: 8086:ae4d (rev 10)
00:0a.0 1180: 8086:ad0d (rev 01)
00:0b.0 1200: 8086:ad1d (rev 01)
00:0d.0 0c03: 8086:7ec0 (rev 02)
00:14.0 0500: 8086:ae7f (rev 10)
00:1f.0 0601: 8086:ae0d (rev 10)
00:1f.5 0c80: 8086:ae23 (rev 10)
01:00.0 0108: 144d:a80d
02:00.0 0604: 104c:8231 (rev 03)
03:00.0 0780: 1093:7414
80:14.0 0c03: 8086:7f6e (rev 10)
80:14.5 0000: 8086:7f2f (rev 10)
80:16.0 0780: 8086:7f68 (rev 10)
80:16.3 0700: 8086:7f6b (rev 10)
80:17.0 0106: 8086:7f62 (rev 10)
80:1c.0 0604: 8086:7f38 (rev 10)
80:1f.0 0601: 8086:7f03 (rev 10)
80:1f.3 0403: 8086:7f50 (rev 10)
80:1f.4 0c05: 8086:7f23 (rev 10)
80:1f.5 0c80: 8086:7f24 (rev 10)
80:1f.6 0200: 8086:550c (rev 10)
81:00.0 0280: 8086:272b (rev 1a)
root@impedan-trol-47:~#

I think the line you ask for is this one:
03:00.0 0780: 1093:7414



I moved the card to another computer to verify that the problem was particular to that specific computer and it appears to be this card / model that causes the issue.


Best regards

Søren Koch

________________________________
From: dave penkler <[email protected]>
Sent: Tuesday, August 4, 2026 5:48 PM
To: Søren Koch <[email protected]>
Cc: Linux-gpib-general <[email protected]>
Subject: Re: [Linux-gpib-general] Problem with getting GPIB card to work

Hi Søren,
What does lspci -n come up with for vendor id 0x1093 ?. Perhaps the PCIe board has a different device id from those that are recognised by the driver.
cheers,
-Dave

On Tue, 4 Aug 2026, 15:27 Søren Koch via Linux-gpib-general, <[email protected]<mailto:[email protected]>> wrote:
He all.


I have just installed a new Ubuntu system:

Distributor ID:    Ubuntu
Description:    Ubuntu 26.04 LTS
Release:    26.04
Codename:    resolute


I have installed the GPIB driver with no problems as usual.


lspvi -v finds the  card:


03:00.0 Communication controller: National Instruments PCIe-GPIB+
     Subsystem: National Instruments PCIe-GPIB+
     Flags: medium devsel, IRQ 255, IOMMU group 10
     Memory at e1004000 (32-bit, non-prefetchable) [disabled] [size=4K]
     Memory at e1000000 (32-bit, non-prefetchable) [disabled] [size=16K]
     Capabilities: [f0] MSI: Enable- Count=1/1 Maskable- 64bit+

modprobe tnt4882 does not give any errors and

modinfo detects the tnt4882 driver:

root@impedan-trol-45:~# modinfo tnt4882
filename:  /lib/modules/7.0.0-22-generic/gpib/tnt4882/tnt4882.ko
description:    GPIB driver for National Instruments boards using
tnt4882 or compatible chips
license:        GPL
srcversion:     63E352E1BFB666D31E833AD
alias:          pci:v00001093d00007258sv*sd*bc*sc*i*
alias:          pci:v00001093d00007259sv*sd*bc*sc*i*
alias:          pci:v00001093d0000710Esv*sd*bc*sc*i*
alias:          pci:v00001093d000070CFsv*sd*bc*sc*i*
alias:          pci:v00001093d0000C831sv*sd*bc*sc*i*
alias:          pci:v00001093d0000C821sv*sd*bc*sc*i*
alias:          pci:v00001093d000071ADsv*sd*bc*sc*i*
alias:          pci:v00001093d0000C811sv*sd*bc*sc*i*
alias:          pci:v00001093d0000C801sv*sd*bc*sc*i*
depends:        nec7210,gpib_common
name:           tnt4882
retpoline:      Y
vermagic:       7.0.0-22-generic SMP preempt mod_unload modversions
root@impedan-trol-45:~#

but when I try to run gpib_config i get this:

root@impedan-trol-45:~# gpib_config
failed to bring board online
failed to configure board
main: No such device
root@impedan-trol-45:~#

and the driver does not load



On an other (older) system running Ubuntu 24.04.03 it works and I get
this when running lspci -v:


04:00.0 Communication controller: National Instruments PCIe-GPIB (rev 02)
     Subsystem: National Instruments PCIe-GPIB
     Flags: bus master, medium devsel, latency 64, IRQ 16, IOMMU group 13
     Memory at 80804000 (32-bit, non-prefetchable) [size=2K]
     Memory at 80800000 (32-bit, non-prefetchable) [size=16K]
     Kernel driver in use: tnt4882
     Kernel modules: tnt4882

(Note that here the driver is loaded and in use)


The only difference is that the board with problems is a PCIe-GPIB+
whereas the one that works is a  PCIe-GPIB (rev 02)


Does anyone have any ideas?


Best regards


--
Søren Koch
Senior Development Engineer
Mob: +45 21325247
[email protected]<mailto:[email protected]>
Fysikvej
Building 310
2800 Kgs. Lyngby



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