Description of problem: I plug an external monitor in my laptop. From gnome settings I configured my laptop display to be off when this monitor is attached. Until recently, this configuration was remembered - whenever I plugged my monitor in, my laptop screen turned off. However, now it resets to both screens being on every time I attach. Version-Release number of selected component (if applicable): gnome-shell: 3.22.3-1.fc25 gnome-settings-daemon: 3.22.2-1.fc25 How reproducible: Always Steps to Reproduce: 1. Attach a monitor 2. Change configuration (resolution, primary display, on/off) 3. Detach monitor 4. Attach monitor Actual results: Configuration is reset to a dual monitor setup with laptop as primary screen Expected results: Configuration is remembered Additional info: This is using an X session.
This also happens every time the monitor goes to sleep, for example when locking the screen.
So, the problem was caused by Linux kernel 4.11. On 4.11 monitor names are changed as they appear in ~/.config/monitors.xml. Before, my external monitor was "DP1", now it's "DisplayPort39" or some other random number each time it's plugged. I'm not sure exactly if this should be a Linux kernel bug, or if the xrandr module of gnome-settings-daemon needs to be changed.
Are you using third-party drivers for your graphics card? If so, which one? If not, which type of graphics card are you using? Event though this change is probably related to using proprietary drivers, I'll reassign to the kernel in case it is not.
I'm using i915 (Intel HD4600). I debugged this further with jadahl on #gnome-shell and I'm starting to think the "DisplayPort39" thing might be a red herring, created from an unrelated test. The kernel seems to always name the display identically according to modetest, and xorg always thinks it's "DP-1". So maybe it's some other sort of race condition? Also, the problem doesn't reproduce with Wayland.
This regressed for me on F27 Beta, intel 5500.
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