[Bug 353049] Re: *ERROR* Unknown parameter 6

[JesseBarnes]

Parameter 6 is probably I915_PARAM_NUM_FENCES_AVAIL, which is only part
of 2.6.29+ kernels.  The error is harmless though; the driver should
fall back gracefully.  Likewise, parameter 4 is
I915_SETPARAM_NUM_USED_FENCES, the other half of the new fence
management code.

The driver used to check drm version numbers to see whether certain
features were available.  That got ugly pretty quickly, so we've moved
to a parameter checking scheme.  If you see "Unknown parameter" in your
log, it just means that the driver is checking for a feature in the
kernel and it didn't find it, so the corresponding 2D or 3D feature
needing that functionality will be disabled.

-- 
*ERROR* Unknown parameter 6
https://bugs.launchpad.net/bugs/353049
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