Comment 40 for bug 886605

I got rid of this after noticing that my desktop environment registered two screens although I only used one. After screen reconfiguration - switching the (actually not existing) screen off, screen lock behaviour was as it should be.

I'm using LTSP and the "bug" appeared on my thin clients, which are all using laptop hardware or are actual laptops and the second screen (auto configured) was called laptop. On the laptop client which actually uses the second screen, screen locking works as expected.

In my case the error is only occurring when a second screen is auto detected but not actually used.