Thus Red Hat's Hans de Goede has re-sent the kernel patches now that there is a working user-space "client" of the privacy-screen class. There are patches for the functionality on the GNOME side and to show an on-screen display when the privacy button is pressed and related helpers around toggling and displaying the current state. There is work pending to Mutter, the GNOME Settings Daemon, and GNOME Control Center for handling the DRM property and feature on capable systems. Fortunately, since then, GNOME has begun preparing support for the "ePrivacy" privacy screen. While that work was sent out months ago and reviewed well, it was held up by the lack of any user-space software making use of the new kernel interface around privacy screens. Last year there were initial Linux kernel patches for bringing up the privacy screen support for Lenovo laptops with necessary ThinkPad ACPI driver changes and also infrastructure for the Intel kernel graphics driver. While the effectiveness of the "ePrivacy" feature is debatable in its current form and with the current work from home craze / limited travel making the feature less pressing at the moment, the Linux support is coming together. Select Lenovo laptops in recent years have offered a built-in "Privacy Guard ePrivacy Filter" for limiting the viewing angles of the laptop with a simple push of a button on the ThinkPad laptops. When it comes to the support with newer Lenovo ThinkPad laptops, it looks like that kernel support could soon land and the GNOME desktop is already preparing to support this feature. Over the past year there has been an uptick in Linux developers from different vendors working on laptop privacy screen support under Linux.
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