----- Original Message ----- > = Proposed Self Contained Change: Better Switchable Graphics Support = > https://fedoraproject.org/wiki/Changes/BetterSwitchableGraphicsSupport > > Change owner(s): > * Hans de Goede <hdegoede AT redhat DOT com> > > All modern laptops have a gpu integrated into their processor (the > igpu), some models also have a more powerful dedicated gpu (dgpu), > this is called switchable graphics. The goal of this feature is to > improve Fedora's support for such laptops. > > > == Detailed Description == > By default all apps will run on the more energy efficient igpu and the > OS can choose to switch to the dgpu when more gpu-power is necessary, > trading battery time for graphics performance. On most laptops the > default gpu can be changed to the dgpu so that everything will always > run on the dgpu. > > Linux support for switchable graphics currently is not very good. E.g. > on many laptops some of the external connectors are only connected to > the dgpu and to be able to use those external connectors without > issues users need to change the default gpu to the dgpu, resulting in > a hot running laptop and the battery draining much faster. > > The goal of this feature is to improve switchable graphics support > under Linux, allowing the igpu to be used as default, allowing maximum > batter life, while keeping everthing working normally. Specifically > the following should all work: external outputs, suspend / resume > (including suspend/resume with external monitors connected / while > docked) and suspending the dgpu when not used. Yep, all this should be automatic. > A secondary goal is to allow people to run graphically demanding > programs on the dgpu by starting them with "DRI_PRIME=1 program", note > that since we do not support dynamic reclocking of nvidia GPUs this > will not always result in a performance improvement. I have some WIP code for gnome-shell to allow that, and it would detect whether prime is available through a D-Bus service (which also runs a few hacks for some devices): https://github.com/hadess/switcheroo-control > == Scope == > * Proposal owners: Fix switchable-graphics related kernel and xorg > bugs, ensure gnome-control-panel "Displays" setting works properly on > switchable-graphics setups > > * Other developers: GNOME control-panel developers (if changes are > necessary there) Shouldn't be necessary, though it would be nice if the display adapters available trickled down from the switcheroo D-Bus service all the way to gnome-session and then the Details panel in GNOME. See also: https://wiki.gnome.org/Design/OS/DualGPU Cheers -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://lists.fedoraproject.org/admin/lists/devel@xxxxxxxxxxxxxxxxxxxxxxx
