[Bug 65396] [IVB] FBC increases power for libva video workload
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Oct 7 18:57:05 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=65396
zhixinx.liu <zhixinx.liu at intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |ASSIGNED
CC| |focus.luo at intel.com,
| |zhixinx.liu at intel.com
--- Comment #22 from zhixinx.liu <zhixinx.liu at intel.com> ---
(In reply to Jani Nikula from comment #21)
> Please retest with current nightly.
FBC disabled on current nightly.
TEST Command:
[root at x-ivb16 ~]# cat /proc/cmdline
BOOT_IMAGE=kernels//nightly_parents/2014_10_01/drm-intel-nightly/913f5c269acd0010427cd7fee6b4812bdacd1cab/bzImage_x86_64
root=/dev/sda1 i915.i915_enable_fbc=1
modules_path=kernels//nightly_parents/2014_10_01/drm-intel-nightly/913f5c269acd0010427cd7fee6b4812bdacd1cab/modules_x86_64/lib/modules/3.17.0-rc7_drm-intel-nightly_913f5c_20141001+
kexec_jump_back_entry=0xca492c56
Add i915.i915_enable_fbc=1 into x-ivb16
Start X
[root at x-ivb16 ~]# cat /sys/kernel/debug/dri/0/i915_fbc_status
FBC disabled: disabled per chip default
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