It seems it caused by that dts not compatible with pexpect 4.8.0 , we met it before, and we have fixed it in latest version.
Here are 3 options for you: 1, lower pexpect to 4.2.1 2, update dts to latest commit 3, apply the patch set below: https://mails.dpdk.org/archives/dts/2020-March/009084.html https://mails.dpdk.org/archives/dts/2020-March/009085.html thanks Lijuan From: David Liu [mailto:d...@iol.unh.edu] Sent: Tuesday, March 24, 2020 11:40 PM To: Tu, Lijuan <lijuan...@intel.com> Cc: dev@dpdk.org Subject: Re: DTS Error / can not find cores The log file may be useful. On Tue, Mar 24, 2020 at 11:32 AM David Liu <d...@iol.unh.edu<mailto:d...@iol.unh.edu>> wrote: Hi, We are currently having an issue when running the command to set up the DTS with T-Rex on the machines. We tried to look into the code, but we are still not sure why and what cause the issue. Do you have any clue how we can fix this? We know the DTS working, T-Rex is able to be detected. Best, David