Bug 464659

Summary: Screen does not lock automatically when certain chrome/chromium tabs are open
Product: [Plasma] kscreenlocker Reporter: Sergio <sergio.callegari>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Severity: major CC: nate
Priority: NOR    
Version: 5.26.4   
Target Milestone: ---   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed In:

Description Sergio 2023-01-22 17:18:45 UTC

Screen does not lock automatically when certain chrome/chromium tabs are open (e.g. when playing media). This may represent a security issue.

For some this may be a feature (e.g. if you are playing a video, you may not want your machine to lock).  However, in many cases it is a serious security issue. For example: you are listening to music, you must leave the machine for a moment, something ends up preventing you from going back to the machine for a longer time than expected, you feel safe supposing that your machine will anyway be autolocked and the machine may remain with your session open and usable by anyone (to read your data including sensitive info or to do something malicious) forever.

This is something that should most definitely made at least configurable.

Furthermore, there is really no reason why merely listening to audio should prevent the machine from autolocking, since screen locking does not prevent audio from being heard.

1. Open your email client, start reading email
2. Open chromium
3. Go to spotify and start playing a song
4. Leave the machine alone for 2 hours


After two hours anyone passing by will be able to read your email or to send email under your name.


The machine should autolock, you are merely playing audio. If there are technical difficulties in distinguishing whether the machine that is playing media is playing just audio or also video, it should be possible to configure it so that media playing cannot inhibit screen auto lock. 


Operating System: Manjaro Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Kernel Version: 6.1.1-arch1-1.2 (64-bit)
Graphics Platform: X11
Comment 1 Sergio 2023-01-22 17:19:56 UTC
This has also been reported to arch:


And to ubuntu

https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1600622 (not specific to plasma)
Comment 2 Nate Graham 2023-01-24 18:10:39 UTC
Apps are allowed to inhibit automatic screen locking, as it would be annoying to have the screen lock while you're in the middle of watching a video. We don't have granular control over what apps choose to block. Duping to Bug 423745, which requests the ability to revoke inhibitions manually.

*** This bug has been marked as a duplicate of bug 423745 ***