Hi Daniel, On Wed, Dec 16, 2015 at 1:43 AM, Daniel Baluta <daniel.baluta@xxxxxxxxx> wrote: > On Tue, Dec 15, 2015 at 9:19 PM, Nish Aravamudan > <nish.aravamudan@xxxxxxxxx> wrote: >> So, I apologize in advance for this relatively vague report, but I'm fairly sure >> the Yoga 900 has an accelerometer amongst other sensors (ambient light?) >> exported over IIO. >> >> But, these sensors seem to not be updating at all with a 4.4-rc5+ kernel (a >> set of patches from https://lkml.org/lkml/2015/11/30/441 applied to Linus' >> tree). >> >> The odd part is at some point in messing with this, I'm fairly sure it did work! >> That is, >> >> `watch -n 0.1 cat '/sys/bus/iio/devices/iio:device'*/*raw*` > > Can you send us a sample of the output? Also, would be > good to identify the exact driver for accel. cat /sys/bus/iio/devices/iio:device*/*raw* 65478 7 1023 0 0 0 100 -539062 -742187 1292968 1592 64932 2 275 0 0 0 0 Now, I should say that I distinctly remember at some point waving my laptop around and seeing these values change ... but now they seem to be "stuck". Maybe it's a hardware issue or something special that WIndows does to leverage the IIO sensors? > Perhaps: cat /sys/bus/iio/devices/iio:device'*/name $ cat /sys/bus/iio/devices/iio:device*/name accel_3d gyro_3d als magn_3d incli_3d dev_rotation >> >> showed updating values as I moved the laptop around. >> >> I've not done any accelerometer debugging before, so any suggestion on >> where to start would be greatly appreciated! > > Did you applied some patches and recompiled the kernel? Or when it did stopped > working? As far as I can tell, it only worked that one one time and hasn't since. Although your question does make me wonder *which* kernel I was on that I experienced the values changing. Let me go back to a stock 4.4-rc5 and see. -Nish -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
