Why does aocl diagnose fail on Ubuntu 16.04 (kernel 4.14 or newer)? - Why does aocl diagnose fail on Ubuntu 16.04 (kernel 4.14 or newer)? Description aocl diagnose may fail to find Arria® 10 device on Ubuntu 16.04 (kernel 4.14 or newer) even though aocl install step completes successfully (as mentioned in AN 807 for Arria® 10 GX FPGA Development Kit) beacuse of the altera_cvp module that is included in newer Ubuntu kernels. To check if altera_cvp module is causing aocl diagnose failure in your system, check the " Kernel driver in use" field for Altera Corporation Device listed in PCIe device information: $ lspci -v Look for Processing accelerators: Altera Corporation Device Processing accelerators: Altera Corporation Device 2494 (rev 01) (prog-if 01) Subsystem: Altera Corporation Device a151 Physical Slot: 4 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at f3140000 (64-bit, prefetchable) [size=512] Memory at f3100000 (64-bit, prefetchable) [size=256K] Capabilities: <access denied> Kernel driver in use: altera-cvp Kernel modules: altera_cvp, aclpci_a10_ref_drv Resolution To prevent the altera_cvp module from being loaded for your Arria® 10 device, copy the blacklist file attached below to /etc/modprobe.d directory and restart the computer. Administrative privileges are required to complete this fix. > Download blacklist-altera_cvp.conf here $ sudo cp blacklist-altera_cvp.conf /etc/modprobe.d/ After reboot, l spci -v should NOT show altera_cvp in the " Kernel driver in use" field for Altera Corporation Device. You should see the Arria® 10 device driver (as shown for Arria® 10 GX FPGA Development Kit in the example below) Processing accelerators: Altera Corporation Device 2494 (rev 01) (prog-if 01) Subsystem: Altera Corporation Device a151 Physical Slot: 4 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f3140000 (64-bit, prefetchable) [size=512] Memory at f3100000 (64-bit, prefetchable) [size=256K] Capabilities: <access denied> Kernel driver in use: aclpci_a10_ref Kernel modules: altera_cvp, aclpci_a10_ref_drv This problem is fixed beginning with the FPGA SDK for OpenCL™ software version 18.1.1 Custom Fields values: ['novalue'] Troubleshooting FB: 593184, 594808, 562212; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1.1 18.1 ['Arria® 10 FPGAs and SoCs', 'Programmable Logic Devices'] ['HLD Tools OpenCL'] ['novalue'] ['novalue']