ERROR: Failed to initialize the S5_CVP library: Failed to initialize the WDC library. Error 0x20000001 - Invalid handle - ERROR: Failed to initialize the S5_CVP library: Failed to initialize the WDC library. Error 0x20000001 - Invalid handle Description You may see this error if you are trying to configure your device using quartus_cvp on a Linux machine and the driver has failed to load. A possible cause for the driver failing to load is that the kernel does not have a large enough virtual memory allocation. You can confirm that there is a problem with virtual memory allocation by checking the kernel ring buffer messages using dmesg. If there is a problem with virtual memory allocation you will see the following message: vmap allocation for size 268439552 failed: use vmalloc= to increase size . Resolution If you are using the GRUB bootlaoder (used for Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6), to pass the vmalloc= parameter to the kernel, add it to the global kopt parameter in /boot/grub/menu.lst , which will look like this: kopt=root=UUID=1029384-7e40-ffd2-9968-7a8b9e78f9g7s ro vmalloc=192M You will need to increase vmalloc to > 512M. Related Articles ERROR: Failed to initialize the S5_CVP library:Failed to initialize the WDC library. Error 0x20000001 - Invalid handle Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Arria® V GT FPGA', 'Arria® V GX FPGA', 'Arria® V GZ FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA', 'Arria® 10 GT FPGA', 'Arria® 10 GX FPGA', 'Arria® 10 SX FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']