Ian Malone wrote:

On 29 September 2015 at 11:25, Timothy Murphy gayleard@eircom.net wrote:

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I wonder if anyone else experiences this? Sometimes when I move the cursor with the pointer on my ThinkPad T510 I am apparently logged out, and have to re-enter my password.

I should say I'm running Fedora 22 with KDE-4.14.11.

That sounds more like screen locking. I've seen something similar (delayed locking, session appears active, but locks when there's activity) on Gnome2 + RHEL4, but not run into it in KDE yet.

Thanks for your response, that sounds very plausible.

I feel it may have something to do with disabling the touchpad. There used to be a straightforward Disable/Enable Touchpad setting, but now it seems to have been "improved" so you have to say when you want it disabled, eg disable during typing.

But the sole cause of this screen-locking, in my case, is movement of the cursor - possibly faster movement than normal.

Kevin Kofler wrote:

Timothy Murphy wrote:

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But the sole cause of this screen-locking, in my case, is movement of the cursor - possibly faster movement than normal.

Check for active screen edges/corners in System Setings, you may have one of them set to "Lock screen".

Thanks for the response. It certainly feels like what you say, but I don't see anything set in System Settings=>Workspace to enable screen locking when crossing edges.

Actually, I haven't had this problem for a couple of days. I still get the "Plasma died" message a couple of times each day, but there seems to be an instant recovery, as far as I can see. Maybe the recovery is not always perfect?

Ed Greshko wrote:

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But the sole cause of this screen-locking, in my case, is movement of the cursor - possibly faster movement than normal.

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Check for active screen edges/corners in System Setings, you may have one of them set to "Lock screen".

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Thanks for the response. It certainly feels like what you say, but I don't see anything set in System Settings=>Workspace to enable screen locking when crossing edges.

If you go to "System Settings--->Workspace--->Desktop Behavior--->Screen Edges" you can click on one of 8 boxes and pick an action for when your mouse hits that edge. One of the selections is "Lock Screen".

Thanks for your response. I did look there, but "Lock Screen" was not enabled for any edge or corner. One corner - top left - was active, but just to be certain I've de-activated it. But the movement that caused the screen locking was not in this direction. All my settings were the default setting; I hadn't changed anything.