Date: Sun, 12 Aug 2018 01:54:24 +0300 From: Greg V <greg@unrelenting.technology> To: Pete Wright <pete@nomadlogic.org> Cc: Kevin Oberman <rkoberman@gmail.com>, "freebsd-x11@freebsd.org" <x11@freebsd.org> Subject: Re: Clarification on moving to drm-stable-kmod on 11.2 Message-ID: <1534028064.35460.2@hraggstad.unrelenting.technology> In-Reply-To: <f3c6ac10-8162-4cc5-96ef-30fdddf7724b@email.android.com> References: <1534020277.35460.0@hraggstad.unrelenting.technology> <f3c6ac10-8162-4cc5-96ef-30fdddf7724b@email.android.com>
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On Sun, Aug 12, 2018 at 1:12 AM, Pete Wright <pete@nomadlogic.org> wrote: > > > On Aug 11, 2018 1:44 PM, Greg V <greg@unrelenting.technology> wrote: >> On Sat, Aug 11, 2018 at 9:58 PM, Kevin Oberman <rkoberman@gmail.com> >> wrote: >> > A while ago I moved to running drm-stable-kmod on my 11.2 system >> and >> > have >> > not had any issues, but I am unclear on what, if ny changes are >> > appropriate >> > in my loader.conf. I just noticed that the "old" kernel module is >> > atill >> > being loaded and I think that is wrong. >> > >> > My loader.conf contains: >> > drm.i915.enable_rc6=7 >> > # Enable semaphores >> > drm.i915.semaphores=1 >> > Are these appropriate to drm-stable-kmod? If so, is loader.conf the >> > proper >> > place for them? >> >> Hi, >> >> These don't work with drm-*-kmod, the new names are: >> compat.linuxkpi.enable_rc6, compat.linuxkpi.semaphores, etc. >> >> And yeah, loader.conf is of course the right place. >> >> You can run 'sysctl -a | grep enable_rc6' — if you see drm.i915, >> you're on the old module, if you see compat.linuxkpi, you're on the >> new >> one. >> > > > Out of curiosity, what do these knobs do? Or for the semaphor knob, > when would you use this? rc6 is a lower power state. I think it should be enabled by default anyway. semaphores enables, well, semaphores, for some synchronization in the driver somewhere… idk really :) also should probably be default=1
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