** Tags added: cscc
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Title:
Dell 7140 avarage power consumption in idle increased by 1.3-1.5 times
due to events by INT3432
** Changed in: linux (Ubuntu)
Status: New => Invalid
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Title:
Dell 7140 avarage power consumption in idle increased by
** Changed in: linux
Status: Incomplete => Invalid
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Title:
Dell 7140 avarage power consumption in idle increased by 1.3-1.5
These settings directly go to firmware and this part of code is not touched
from a long time. Did you update BIOS recently?
Try to revert commits 6f92253024d9d947a4f454654840ce479e251376
and f1664eaacec31035450132c46ed2915fd2b2049a.
They should have been backported older kernels
> "in_accel_sampling_frequency from 10 to 10", may be you mean
something.
Sorry, I mean 10 to 1.
> Then I think you will be fine.
Yes, events stopped, power consumption back to normal.
> Then enable 1 by 1 and see which device has issue.
magn_3d and accel_3d
> Then play with those parameters
"in_accel_sampling_frequency from 10 to 10", may be you mean something.
You have two other devices also. First try this:
For all the devices
/sys/bus/iio/devices/iio:device*/buffer/enable = 1
make them 0.
echo 0 > /sys/bus/iio/devices/iio:device*/buffer/enable
Then I think you will be fine.
> These parameters should be set by user space based on the application
> requirement, kernel can't set.
Then why kernel version makes a difference? And how actually this bug
can be solved?
> I think geoclue is some service uses magnetometer.
I not sure how correct behaviour should look like,
These parameters should be set by user space based on the application
requirement, kernel can't set.
I think geoclue is some service uses magnetometer.
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You are right, on Linux 4.9.0 where power consumption was low and there
was no interrupts coming from INT343A - monitor-sensor can't detect
orientation and can't get light sensor data.
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Created attachment 279003
iio devices list
Thank you for looking into this issue.
Names and status of sensor with enable iio sensor proxy is attached.
> Now measure power and see if you still have issue.
Issue is not reproducible with removed iio-sensor-proxy (for some reason
disabling
I don't think you need a patch. Enable iio-sensor-proxy again. You
probably want to change hysteresis. This will decide how much change in
sample data before data is sent to user. OR need to reduce sampling
frequency.
Most probably this is accel_3d, which in your case
You can disable iio_sensor_proxy service and reboot. Then look at
value of /sys/bus/iio/devices/iio:device*/buffer/enable
They all should be 0. Also better to note the sensor name corresponding to each
iio:device*. There is an attribute called "name" under each iio:device*.
Now measure power
I tried 0.10 in_accel_hysteresis, then tried 0.05 and 0.01.
I also tried to reduce in_accel_sampling_frequency from 10 to 10.
Unfortunately, all of this doesn't make noticeable difference.
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Added Srinivas who knows this area better.
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Title:
Dell 7140 avarage power consumption in idle increased by 1.3-1.5 times
due to
Thanks. I guess this is not related to I2C host controller driver then.
Sensors generate lots of traffic if they are enabled (not sure if there
is a way to disable certain from UI).
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> Could you blacklist just hid-sensor-hub and see if you still see the
> interrupt storm?
Blacklisted hid-sensor-hub and get same result as with blacklisting
i2c_hid - no interrupt storm. Power consumption is below 3 Watts per
second in idle.
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Created attachment 278485
/proc/interrupts content on Linux 4.18.6 normal boot with i2c_hid module
blacklisted
On boot with blacklisted i2c_hid there is 40-60 wakeups per second
instead of 300+, /proc/interrupts content is attached.
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OK, thanks. I kind of suspect that the sensor hub is the one generating
those interrupts. Could you blacklist just hid-sensor-hub and see if you
still see the interrupt storm?
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I see SMO91D0:00 (Sensor Hub) is also generating some amount of
interrupts. Maybe something is generating a lot of events from there and
that causes a lot of I2C traffic from drivers?
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Indeed. I wonder if you can unload (or blacklist) those drivers and see
if the interrupt count goes low?
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Title:
Dell 7140 avarage
Created attachment 278237
i2c-ls
> Can you also attach contents of /sys/bus/i2c/devices/*?
Please look into attached file.
"ls /sys/bus/i2c/devices/*" output is sufficient or some additional info
is required?
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Can you also attach contents of /sys/bus/i2c/devices/*? It would be nice
to know all devices connected to I2C buses.
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Title:
Dell
Thank you for looking into logs!
> so, when you say normal boot, you mean a cold boot, say, in 4.17.0 kernel,
> shutdown the machine, and then power on the machine manually to boot into
> 4.9.3 kernel, right?
Yes.
> If this is true, we are still able to confirm the good and bad kernel, by do
>
for Linux 4.9.3 normal boot
7: 4945 1476 1820275 IR-IO-APIC 7-fasteoi
INT3432:00, INT3433:00
for Linux 4.9.3 boot after Linux 4.17.0
7: 327339 48015 802942 21344 IR-IO-APIC 7-fasteoi
INT3432:00, INT3433:00
yes. there is indeed an
If continuing bisect could be helpful please clarify how to proceed with
it, relevant question is in Comment 15.
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Title:
Dell 7140
> hmm, can you please attach the acpidump output, and also the output of
"cat /proc/interrupts" and "grep . /sys/firmware/acpi/interrupts/*" for both
good and bad case.
Sure, all data is uploaded below:
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Created attachment 277037
acpidump output on Linux 4.9.3 boot after Linux 4.17.0
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Title:
Dell 7140 avarage power consumption in
Created attachment 277041
/sys/firmware/acpi/interrupts/ content on Linux 4.9.3 boot after Linux 4.17.0
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Title:
Dell 7140 avarage
Created attachment 277035
/sys/firmware/acpi/interrupts/ content on Linux 4.9.3 normal boot
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Title:
Dell 7140 avarage power
Created attachment 277039
/proc/interrupts content on Linux 4.9.3 boot after Linux 4.17.0
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Title:
Dell 7140 avarage power
Created attachment 277033
/proc/interrupts content on Linux 4.9.3 normal boot
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Title:
Dell 7140 avarage power consumption in idle
Created attachment 277031
acpidump output on Linux 4.9.3 normal boot
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Title:
Dell 7140 avarage power consumption in idle increased
Created attachment 276559
powertop on Linux 4.9.3 boot after Linux 4.17.0
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Title:
Dell 7140 avarage power consumption in idle
Created attachment 276553
turbostat on Linux 4.9.3 normal boot
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Title:
Dell 7140 avarage power consumption in idle increased by
Created attachment 276555
powertop on Linux 4.9.3 normal boot
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Title:
Dell 7140 avarage power consumption in idle increased by
Created attachment 276557
turbostat on Linux 4.9.3 boot after Linux 4.17.0
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Title:
Dell 7140 avarage power consumption in idle
(In reply to RussianNeuroMancer from comment #15)
> As I proceed with bisect (due to various reasons now I have to build inside
> virtual machine instead of bare metal hardware, so this slow down building
> by few times) I have difficulties with determining what build have to be
> marked as good,
Launchpad has imported 16 comments from the remote bug at
https://bugzilla.kernel.org/show_bug.cgi?id=197047.
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Hello, Joseph!
Issue is still reproducible with 4.14rc3.
** Tags added: kernel-bug-exists-upstream
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Title:
Dell 7140 avarage
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.14 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
Public bug reported:
On Dell Venue 11 Pro 7140 average power consumption in idle increased by
1.3-1.5 times due to events coming from INT343A. According to powertop
since Linux 4.10 INT3432:00 generate around two hundred events on
average, in /sys/devices/pci:00/INT3432:00/i2c-6 there is two
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