The same thing on Asus N550JV and Ubuntu 22.04.4 LTS.
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Title:
Battery status behaves erratically
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I'm still having the issue on kernel 3.1.10-9.27, no matter what I
attempt or try, ubuntu always thinks the nexus 7 is about dead.
I was curious if there was anymore on this as there hasn't been a post
in a month and searching for this issue returned nothing other than this
site.
I'm not sure
** Changed in: ubuntu-nexus7
Status: New = Triaged
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Title:
Battery status behaves erratically
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Martin, for whatever it's worth, the following upower bug I filed might
also be related - since an idle nexus 7 has a longer battery life than
20 hours, one would hope.
https://bugs.freedesktop.org/show_bug.cgi?id=60110
Cheers,
Alex
** Bug watch added: freedesktop.org Bugzilla #60110
I committed the patch upstream and wrote a corresponding test case.
** Changed in: upower (Ubuntu)
Status: Confirmed = In Progress
** Changed in: upower (Ubuntu)
Assignee: (unassigned) = Martin Pitt (pitti)
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Alex, indeed. I followed up to the upstream bug and will discuss that
with Richard once he comes online.
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Title:
Battery status behaves
This bug was fixed in the package upower - 0.9.19-1ubuntu4
---
upower (0.9.19-1ubuntu4) raring; urgency=low
* Add battery_mixed_charge_energy_test.patch: Fix batteries which report the
current energy (µWh), but only the full charge (µAh). Thanks Alex Hornung
for the patch!
Reopening kernel task, as two patches haven't been applied yet.
** Changed in: linux-nexus7 (Ubuntu)
Status: Fix Released = Triaged
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a test kernel is here http://people.canonical.com/~ogra/tegra/nexus7
/linux-image-3.1.10-9-nexus7_3.1.10-9.24_armhf.deb
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Title:
Battery status
testing with all patches applied this seems to fix it ...
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Battery status behaves erratically
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there is no change with this patch, turning back to confirmed
** Changed in: linux-nexus7 (Ubuntu)
Status: Fix Released = Confirmed
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While gema's issue (which was dealing with raw sysfs read data) is gone
with this patch, I suspect your issue might well be related to upower.
Did you try with the second patch as well? The Provide energy
measurement ? A quick skim through the relevant upower code would
indicate that it does try
The patch definitely fixed my issue, you could see the graph before,
attach the graph after.
The other patch for energy_now measurements is the one shown in
https://bugs.launchpad.net/ubuntu-nexus7/+bug/1093543.
** Attachment added: draining_new_kernel.png
LP: #1109183, rather !
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Battery status behaves erratically
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Actually I don't think the energy patch will change much. Fact is that,
since we don't provide current_now nor power_now, upower will do,
/* the hardware reporting failed -- try to calculate this */
if (energy_rate 0.01)
energy_rate =
Attached is a kernel patch to provide current_now. It may help with the
upower issues, as it should result in upower using a different method to
calculate the remaining time, etc.
Cheers,
Alex
** Patch added: 0001-power-bq27541_battery-Provide-current_now.patch
awesome, i will test it during the day ...
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Battery status behaves erratically
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testing a kernel with teh above patch doesnt seem to fix it either ...
but i made an intresting observation:
right after first boot
ogra@nexus7:~$ upower -d |grep energy-full:
energy-full: 73.66 Wh
the energy-full value actually should be a fixed value coming from the
battery
For me the Nexus 7 says that the battery is low with 100%. Also the
Pandaboard behaves strangely, sometimes it shows that it has a battery,
sometimes that it has no battery but I never get no battery symbol in
the indicator area at all (as it should be for a device without
battery).
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** Branch linked: lp:ubuntu/raring-proposed/linux-nexus7
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Title:
Battery status behaves erratically
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This bug was fixed in the package linux-nexus7 - 3.1.10-9.24
---
linux-nexus7 (3.1.10-9.24) raring; urgency=low
[ Alex Hornung ]
* SAUCE: power: bq27541_battery - Provide current_now
- LP: #1093543
[ Andy Whitcroft ]
* [Config] switch from USB_G_SERIAL to
Well, here go 3 more patches 1 for upower, 2 for the kernel.
The upower one just fixes a logic bug that will allow the design
capacity to be read via charge, even though the current energy is read
directly as energy.
The kernel patches are:
1) Fix a bug in a previous patch - even though the
Fixes units of energy_now (10mWh - mWh)
** Patch added: 0001-power-bq27541_battery-fix-units-of-energy_now.patch
https://bugs.launchpad.net/ubuntu-nexus7/+bug/1093543/+attachment/3508103/+files/0001-power-bq27541_battery-fix-units-of-energy_now.patch
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PS: note that the upower patch is against the upstream version, so it
may or may not apply cleanly to the version ubuntu has. Nonetheless, it
should be straight forward to apply the patch manually - it's just 1
line.
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Adds charge_full and charge_full_design nodes/measurements.
** Patch added:
0001-power-bq27541_driver-Add-charge_full-charge_full_des.patch
https://bugs.launchpad.net/ubuntu-nexus7/+bug/1093543/+attachment/3508110/+files/0001-power-bq27541_driver-Add-charge_full-charge_full_des.patch
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The patch for charge_full and charge_full_design
** Patch removed:
0001-power-bq27541_driver-Add-charge_full-charge_full_des.patch
https://bugs.launchpad.net/ubuntu-nexus7/+bug/1093543/+attachment/3508110/+files/0001-power-bq27541_driver-Add-charge_full-charge_full_des.patch
** Patch added:
(NOTE that I updated the patch for charge_full and charge_full_design -
yesterday I forgot to commit one last diff before generating the patch).
All of these patches have now been sent upstream as well. The android
one for energy_now has been updated with all the other extra
measurements.
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: upower (Ubuntu)
Status: New = Confirmed
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** Changed in: upower (Ubuntu)
Status: Confirmed = New
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Battery status behaves erratically
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: upower (Ubuntu)
Status: New = Confirmed
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Title:
The issue here is a bug in the bq27541 fuel gauge driver. The
get_property() function is not thread-safe, but reentry is possible in
several different scenarios.
The attached patch fixes this issue by protecting get_property() via a
mutex.
Below is the patch commit message, for clarity:
*
The attachment 0001-power-bq27541-driver-serialize-get_property.patch
of this bug report has been identified as being a patch. The ubuntu-
reviewers team has been subscribed to the bug report so that they can
review the patch. In the event that this is in fact not a patch you can
resolve this
** Changed in: ubuntu-nexus7
Status: Confirmed = Fix Committed
** Changed in: ubuntu-nexus7
Status: Fix Committed = New
** Also affects: linux-nexus7 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-nexus7 (Ubuntu)
Status: New = Fix Committed
**
This bug was fixed in the package linux-nexus7 - 3.1.10-9.23
---
linux-nexus7 (3.1.10-9.23) raring; urgency=low
[ Alex Hornung ]
* SAUCE: power: bq27541 driver - serialize get_property
- LP: #1093543
* SAUCE: power: bq27541_battery - Provide energy measurement
- LP:
** Branch linked: lp:ubuntu/linux-nexus7
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Battery status behaves erratically
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** Tags added: sensors
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Battery status behaves erratically
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** Also affects: upower (Ubuntu)
Importance: Undecided
Status: New
** Changed in: ubuntu-nexus7
Assignee: Colin King (colin-king) = (unassigned)
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