Robert

No, that’s all the same. The one working has a serial number starting with 15, the newer one with 17. Potentially the driver is different that is not supported by Linux gpib? Cheers, Robert On Jun 14, 2021, at 07:59, Frank Mori Hess fmhess@users.sourceforge.net wrote:  Well, it appears to be completely failing to communicate with the gpib-usb-hs over usb. Maybe the difference between your working and broken one is the type of usb port hardware it is plugged in to (like usb3 superspeed versus usb2...

failed to bring board online (GPIB-USB-HS)

I rebooted to be sure. Writing is going well and fast just the response is not. Dang. Cheers, Robert On May 25, 2021, at 18:12, Frank Mori Hess fmhess@users.sourceforge.net wrote:  Did you rmmod the old modules, or reboot? If it is something else, you'll probably have to debug tnt4882_accel_read() in tnt4882_read.c yourself and figure out why/where it is getting stuck to make progress. On Tue, May 25, 2021 at 3:40 PM Robert robertst@users.sourceforge.net wrote: I changed the code. Cleaned and remade...

I changed the code. Cleaned and remade installed it (kernel only). Nothing changed :/ Cheers, Robert On May 25, 2021, at 15:29, Frank Mori Hess fmhess@users.sourceforge.net wrote:  Well, you could just edit the code you have with the 2 line changes shown here: https://sourceforge.net/p/linux-gpib/code/1985/ Or you could checkout the svn trunk. Then rebuild/reinstall/reload the linux-gpib-kernel modules. [support-requests:#31] communication with same instruments times out Status: open Group: v1.0...

That sounds promising. Please tell me what to do and how to do it. Cheers, Robert On May 25, 2021, at 14:04, Frank Mori Hess fmhess@users.sourceforge.net wrote:  Would you try svn revision 1985? I found a possible cause of your issue. [support-requests:#31] communication with same instruments times out Status: open Group: v1.0 (example) Labels: timeout Created: Mon May 24, 2021 03:00 PM UTC by Robert Last Updated: Mon May 24, 2021 03:00 PM UTC Owner: nobody Hi, I installed linux gpib on Ubuntu 21.04...

Hi, I am not sure about that. How can I check/change that? In python I tried numerous terminations for read and write comments without success. Cheers, Robert On May 24, 2021, at 11:30, DaveP dpenkler@users.sourceforge.net wrote:  Hi Robert, Do the 2420 Source meter and SR844 Lockin assert EOI at the end of their message ? -dave On Mon, 24 May 2021 at 17:00, Robert robertst@users.sourceforge.net wrote: [support-requests:#31] communication with same instruments times out Status: open Group: v1.0...

communication with same instruments times out