On 24/04/15 17:18, Marc MERLIN wrote: > On Fri, Apr 24, 2015 at 04:53:53PM +0100, Chris Wilson wrote: >> Whether of not it tears depends upon your window manager. On bare X, >> using mplayer -vo xv or -vo gl, should not tear. Under a compositing >> window manager, it depends upon how it decides to update the screen. To >> force everything to update without tearing, use >> >> echo > /etc/X11/xorg.conf.d/90-intel.conf <<EOF >> Section "Device" >> Identifier "igfx" >> Option "TearFree" >> EndSection >> EOF > > Cool, thanks for the tip and your help. > > I was curious to see how my power use would be, and got about the same power > use at idle with LCD to minimum: > The battery reports a discharge rate of 12.4 W > The estimated remaining time is 7 hours, 27 minutes > > Summary: 171.5 wakeups/second, 0.1 GPU ops/seconds, 0.0 VFS ops/sec and 2.0% CPU use > > Power est. Usage Events/s Category Description > 3.73 W 1.9% Device Display backlight > 1.16 W 4.7 ms/s 65.3 Process [btrfs-transacti] > 741 mW 0.9 ms/s 41.9 Interrupt [4] block(softirq) > 175 mW 156.0 µs/s 9.9 Process [rcu_sched] > > > Then, if I turn my screen off (backlight 0), it actually seems to save another 7W: On many small devices (phones, tablets, notebooks, modern laptops) the backlight consumes about as much as everything else put together! So #1 energy-saving tip is always "turn the brightness down" followed by "turn the screen off at every opportunity". .Dave. > The battery reports a discharge rate of 5.06 W > The estimated remaining time is 18 hours, 5 minutes > > Summary: 79.4 wakeups/second, 0.2 GPU ops/seconds, 0.0 VFS ops/sec and 1.8% CPU use > > Power est. Usage Events/s Category Description > 229 mW 1.4 ms/s 13.4 Process [btrfs-transacti] > 181 mW 4.1 ms/s 10.4 Process /usr/bin/enlightenment > 174 mW 206.2 µs/s 10.2 Interrupt [4] block(softirq) > > > So the good news is that the driver sems to do fine on batteries with the > default options now. > > Thanks, > Marc _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
