Display and Graphics Power Saving

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Graphics Power Saving Features

The Intel Graphics team along with the open source graphics community is working to implement several power saving features. Some of the features we’re planning are listed below.

Feature Status Potential power savings Hardware
Framebuffer Compression implemented in upstream driver, should be included in next release up to 0.7W 9xx mobile chips (such as, 915GM, 965GM)
Backlight Control completely implemented as of Intel driver release 2.0 Up to 3 W devices connected to LVDS displays (e.g. laptop screens)
Minimized Vertical Blank Interrupts in upstream DRM branch, awaiting merge to Linux upstream at maintainer's discretion. In progress all
Automatic Display Brightness mechanism available, desktop applications don't yet fully exploit it In progress connected to LVDS displays (such as, laptop screens)
Display Refresh Rate Switching not yet implemented, power savings yet to be evaluated. In progress all
Dynamic Display Power Optimization not yet implemented, power savings yet to be evaluated In progress all
Display Power Saving (DPST) not yet implemented, power savings yet to be evaluated In progress all
Dual-frequency Graphics (DFGT) not yet implemented, power savings yet to be evaluated. In progress all
Rapid Memory Power Management (RMPM) not yet implemented, power savings yet to be evaluated In progress all
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