Steam clint randomly blocks power management screen blanking.

[bjwest]

Your system information

• Steam client version (build number or date): Jun 21 2019 @ 01:43:20. API v018
• Steam package versions: 1561159470
• Distribution (e.g. Ubuntu): KDE Neon 5.16
• Opted into Steam client beta?: Yes
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

Steam client randomly disables power management with the notification "My SDL application is currently suppressing power management: playing a game" dosplayed in the Battery and Brightness widget. Exiting Steam and restarting will clear the problem for a random period of time, after which the power management is disabled again with the same notification.

Steps for reproducing this issue:

1. Run Steam client.
2. Wait a random, indeterminate period of time.
3. Notice screen no longer blanks after set inactivity time.

Seems to be similar to issue #5532 from about a year ago, but I don;t recall having that problem back then. This started happening a few weeks ago, and I've just now taken the time to trace it to the Steam Client.

[kisak-valve]

Hello @bjwest, this issue is already being tracked at #5607. Closing as a duplicate.