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SeongLim's avatar
SeongLim
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8 months ago

[USB-Blaster] Detected as "USB-Blaster Variant" on SLES12 – Causing Detection Issues

Hi, I'm facing an issue where the USB-Blaster is automatically detected as USB-Blaster [Variant] in a Linux environment (SLES12), instead of the standard USB-Blaster. Because of this, my system is ...
Programmable Logic Device
Milan_S's avatar
Milan_S
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2 months ago

My actual workaroud about the issue is to restart jtagserver. In CMD as admin:

net stop jtagserver

net start jtagserver

  • Farabi's avatar
    Farabi
    Icon for Regular Contributor rankRegular Contributor
    2 months ago

    Hello, 

     

    Every time you install new version of Quartus , it will ask you to install USB Blaster driver. Do you do this step? This step is critical to keep your driver matching with your Quartus version. 

     

    regards,

    Farabi

    • Milan_S's avatar
      Milan_S
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      2 months ago

      Sure

      • Farabi's avatar
        Farabi
        Icon for Regular Contributor rankRegular Contributor
        2 months ago

        Hi , how is your usb blaster issue, still problem? 

  • Milan_S's avatar
    Milan_S
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    2 months ago

    Taking back, today jtagserver restart do not help.  Command:

    C:\altera_pro\25.1.1\quartus\bin64>jtagconfig returns:

    1) USB-Blaster variant [USB-1]
      Unable to lock chain - Hardware not attached
    2) Remote server loc: Unable to connect

    In this wrong state, the Device Manager still shows on the oem190.inf so the driver is still the same...