[Linux-gpib-general] Counterfeit NI GPIB-USB-HS half-works?

[Hernán F. <hj...@hj...>]

Hello. I installed the latest version from master (4c820721), but when
trying to use it, it half works, and it does a lot of other weird stuff.
I'm using a counterfeit GPIB-USB-HS from eBay (I assume it's counterfeit
because it costed $70). The device is not detected as counterfeit by NI
drivers on Windows, and works fine there. I can communicate with the GPIB
device. But not on Linux. I don't get any prompts to update its firmware
either.
This is dmesg on a fresh boot:

$ sudo dmesg|grep gpib
[    4.912608] gpib_common: loading out-of-tree module taints kernel.
[    4.912658] gpib_common: module verification failed: signature and/or
required key missing - tainting kernel
[    4.915244] gpib_common: Linux-GPIB 4.3.7 core driver loaded
[    4.937190] usb 1-1.6: ni_usb_gpib: probe succeeded for path:
usb-0000:00:1a.0-1.6
[    4.937228] usbcore: registered new interface driver ni_usb_gpib
[    5.317767] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[6]=0x19,
expected 0x2, 0xe, 0xf or 0x16
[    5.318304] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[10]=0x59,
expected 0x96, 0x07 or 0x6e
[    5.324141] usb 1-1.6: ni_usb_gpib: bus 1 dev num 7 attached to gpib0,
intf 0
[  155.040427] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[6]=0x19,
expected 0x2, 0xe, 0xf or 0x16
[  155.040443] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[10]=0x59,
expected 0x96, 0x07 or 0x6e
[  155.046186] usb 1-1.6: ni_usb_gpib: bus 1 dev num 7 attached to gpib0,
intf 0
also:[    4.717800] usb 1-1.6: new high-speed USB device number 7 using
ehci-pci
[    4.830150] usb 1-1.6: config 1 interface 0 altsetting 0 endpoint 0x81
has an invalid bInterval 0, changing to 7
[    4.830649] usb 1-1.6: New USB device found, idVendor=3923,
idProduct=709b, bcdDevice= 1.01
[    4.830654] usb 1-1.6: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[    4.830657] usb 1-1.6: Product: GPIB-USB-HS
[    4.830659] usb 1-1.6: Manufacturer: National Instruments
[    4.830660] usb 1-1.6: SerialNumber: 019A335E
[    4.937190] usb 1-1.6: ni_usb_gpib: probe succeeded for path:
usb-0000:00:1a.0-1.6
[    5.317767] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[6]=0x19,
expected 0x2, 0xe, 0xf or 0x16
[    5.318304] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[10]=0x59,
expected 0x96, 0x07 or 0x6e
[    5.324141] usb 1-1.6: ni_usb_gpib: bus 1 dev num 7 attached to gpib0,
intf 0
[  155.040427] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[6]=0x19,
expected 0x2, 0xe, 0xf or 0x16
[  155.040443] usb 1-1.6: ni_usb_gpib: unexpected data: buffer[10]=0x59,
expected 0x96, 0x07 or 0x6e
[  155.046186] usb 1-1.6: ni_usb_gpib: bus 1 dev num 7 attached to gpib0,
intf 0
Here are the issues:
1) It appears my device (HP 34401A) receives the commands, but linux-gpib
doesn't get any acknowledgement. The device goes into remote mode if I send
*IDN?, but I get an error message

: w
enter a string to send to your device: *RST
sending string: *RST

gpib status is:
ibsta = 0x8000  < ERR >
iberr= 0
EDVR 0: OS error

ibcntl = 6
..: r
enter maximum number of bytes to read [1024]: 199
trying to read 199 bytes from device...
received string: ''
Number of bytes read: 0
gpib status is:
ibsta = 0xc000  < ERR TIMO >
iberr= 6
EABO 6: Operation aborted

ibcntl = 0
this line appears in dmesg:[  164.340630] usb 3-1.6: ni_usb_gpib:
Addressing error retval 0 error code=3
That's as far as the first issue goes. Then:
2) After some time, it stops working completely. The error message changes
to:gpib status is:
ibsta = 0x8000  < ERR >
iberr= 0
EDVR 0: OS error

ibcntl = 14and dmesg is flooded with
[ 2980.442771] ni_usb_gpib: parse error: wrong start id
[ 2980.442775] ni_usb_gpib: parse error: wrong end id
[ 2980.442777] ni_usb_gpib: parse error: wrong count=0 for
NIUSB_REGISTER_READ_DATA_END
[ 2980.442779] ni_usb_gpib: unexpected data: raw_data[6]=0xff, expected 0
[ 2980.442781] ni_usb_gpib: unexpected data: raw_data[7]=0xff, expected 0
[ 2980.442784] 0c 00 68 00 00 00 ff ff                          ..h.....
also, something breaks completely in my computer's USB controller and a
reset won't fix it. When it goes into that mode, the computer even refuses
to boot when the USB adapter is plugged. The machine needs to be completely
turned off for it to work again. When it's in this state, gpib_config won't
work even after a reboot, and lsusb hangs if the device is plugged in.
Unplugging it and plugging it back in doesn't fix the issue, the computer
needs to be powered down.
Regards