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I915(4)               DragonFly Kernel Interfaces Manual               I915(4)


NAME

     i915 - Driver for Intel i915 family integrated graphics chipsets


DESCRIPTION

     The i915 driver provides support for integrated graphics chips by Intel.
     Please refer the Loader Tunables section in syscons(4) for more
     information about how to make the console work with i915.


LOADER TUNABLES

     Tunables can be set at the loader(8) prompt before booting the kernel or
     stored in loader.conf(5).

     drm.i915.enable_psr
             Enable PSR (panel self refresh), only relevant for Haswell and
             Broadwell CPUs.  1 = enable, 0 = disable (default).  To maximize
             PSR usage, it can be beneficial to set hw.dri.vblank_offdelay
             (see drm(4)) to a sufficiently low value (or -1), to minimize
             vblank interrupt activity.


SYSCTL VARIABLES

     If display backlight level can be controlled by the GPU (which is often
     the case in notebooks), the sysctl hw.backlight_level can be used to
     adjust the backlight level.  Permitted values are from 0 to the value of
     hw.backlight_max.


SEE ALSO

     drm(4), syscons(4)


HISTORY

     The i915 driver was first available for Linux.

DragonFly 6.5-DEVELOPMENT       October 9, 2019      DragonFly 6.5-DEVELOPMENT

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