Linux driver PCIe Cyclone10GX - Linux driver PCIe Cyclone10GX Hello. We have bought Cyclone10GX Development Kit and try to check PCIe bandwidth. I use your Cyclone10GX_PCIeGen2x4_DMA_18_0_project. It contains driver and user application sources. I am not able to compile them. Used OS is Ubuntu 20.04.2 LTS. GCC version is (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0. When I type "sudo ./install cyclone10", I got many errors. like this: altera_dma_cmd.h:50:20: error: field ‘write_time’ has incomplete type 50 | struct timeval write_time; Looks like compiler version is not copmatible. But I can be wrong. Please help to compile the driver. Best regards, Oleg. Replies: Re: Linux driver PCIe Cyclone10GX Hi Oleg, I’m glad that the root cause is identified, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you. Thanks Best regards, KhaiY Replies: Re: Linux driver PCIe Cyclone10GX The problem is in "struct timeval". It is not supported since kernel 5.6. Ubuntu 20.04 has kernel 5.8. So I had to get rid of this structure. Replies: Re: Linux driver PCIe Cyclone10GX Hi Oleg, This error is not observed in Redhat/CentOS. It might have some OS or system dependencies. Could you try using other OS? Thanks Best regards, KhaiY