[Bug 91108] [xf86-video-intel] poor performance and stuttering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91108

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
To start with:

[     9.086] Kernel command line: BOOT_IMAGE=/vmlinuz-linux
root=UUID=49a81897-cb3e-471e-9bd8-47caa6367437 rw quiet splash
i915.enable_rc6=7 i915.enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1
i915.semaphores=1 acpi_osi=Linux acpi_backlight=vendor

is dangerous.

Do not set:
   i915.enable_rc6
   i915.enable_fbc
   i915.lvds_downclock
   i915.semaphores

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