Hello, with https://github.com/openSUSE/aaa_base/pull/138 ptrace got disabled by default on Tumbleweed by setting kernel.yama.ptrace_scope = 1 This means that you can't ptrace your own processes in the default configuration (e.g. use strace -p to attach to a running process). This was done because the vast majority of users don't need the funcionality and malware can abuse it to e.g. steal credentials. If you need this functionality (and since you read the list the chances are high) you can set kernel.yama.ptrace_scope back to the default value of 0 and get the old behavior back. Johannes -- GPG Key EE16 6BCE AD56 E034 BFB3 3ADD 7BF7 29D5 E7C8 1FA0 Subkey fingerprint: 250F 43F5 F7CE 6F1E 9C59 4F95 BC27 DD9D 2CC4 FD66 SUSE Software Solutions Germany GmbH, Frankenstraße 146, 90461 Nürnberg, Germany Geschäftsführer: Ivo Totev, Andrew McDonald, Werner Knoblich (HRB 36809, AG Nürnberg)