Re: Battery life with the latest drm
On Thu, Feb 05, 2015 at 09:22:49PM +0100, Jan Kokemüller wrote: > > On 04.02.2015 21:27, Lars Engels wrote: > > By the way on the X230 (IvyBridge i7) the loader.conf setting > > "drm.i915.enable_rc6=7" makes a huge difference. > > For some other reason I removed it from loader.conf and > > hw.acpi.battery.time showed 160 minutes. After re-adding it battery time > > went up to 230 minutes. > > I've been using the same setting for a while now and can confirm the > increase of battery life. It also makes a huge difference in fan noise > on my T420. > > Can you suspend/resume with rc6 on? I had to patch around a deadlock in > i915_irq.c: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183859 > I haven't checked yet if this still occurs after the recent drm import. Yes, I can suspend and resume several times. I haven't seen a broken s/r cycle since the latest drm import. pgp3h18nmOxnP.pgp Description: PGP signature
Re: Battery life with the latest drm
On 04.02.2015 21:27, Lars Engels wrote: By the way on the X230 (IvyBridge i7) the loader.conf setting "drm.i915.enable_rc6=7" makes a huge difference. For some other reason I removed it from loader.conf and hw.acpi.battery.time showed 160 minutes. After re-adding it battery time went up to 230 minutes. I've been using the same setting for a while now and can confirm the increase of battery life. It also makes a huge difference in fan noise on my T420. Can you suspend/resume with rc6 on? I had to patch around a deadlock in i915_irq.c: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183859 I haven't checked yet if this still occurs after the recent drm import. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
Battery life with the latest drm
Just a quick report that from my completely unscientific observations it seems that battery life is extended with the latest drm import on my Thinkpad X230. I should probably get some numbers first, but my gut feeling is that it is better. By the way on the X230 (IvyBridge i7) the loader.conf setting "drm.i915.enable_rc6=7" makes a huge difference. For some other reason I removed it from loader.conf and hw.acpi.battery.time showed 160 minutes. After re-adding it battery time went up to 230 minutes. Lars pgp2m6qMcA0XV.pgp Description: PGP signature