# Installation hangs under Jessie when su is disabled

**URL:** <https://forums.percona.com/t/installation-hangs-under-jessie-when-su-is-disabled/5477>\
**Category:** Percona Server for MySQL 5.7\
**Created:** [March 13, 2017, 9:00am UTC](https://forums.percona.com/t/installation-hangs-under-jessie-when-su-is-disabled/5477 "2017-03-13T09:00:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![smares](https://avatars.discourse-cdn.com/v4/letter/s/3da27b/32.png) [@smares](https://forums.percona.com/u/smares)\
**Post date:** [March 13, 2017, 9:00am UTC](https://forums.percona.com/t/installation-hangs-under-jessie-when-su-is-disabled/5477/1 "2017-03-13T09:00:30Z")

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The installation of Percona server hangs under Jessie if /etc/pam.d/su disables the ability to su without password and forces the user to be part of the root group.