Hi,
On Mon, 2020-11-09 at 13:20 +0200, Heikki Krogerus wrote:
> On Mon, Nov 09, 2020 at 08:48:06PM +1000, Vladimir Yerilov wrote:
> > Since linux 5.8 I'm experiencing a problem related to power source
> > detection on my laptop. My machine is equipped with 2 typec ports, one
> > of them has power delivery and is used for charging, another one has
> > only data transfer capability. The issue is, when I unplug the power
> > cable, the OS is reporting something like "Battery at 100%, plugged in
> > but still discharging" (KDE Plasma notification) - whether another
> > port is used or not. I checked with upower, you can see the output for
> > kernel 5.4 and 5.10 attached. In brief, on 5.8 onwards I have some
> > "line_power_ucsi_source_psy_USBC000o001" device which is considered a
> > power supply and that prevents OS to switch to "battery mode" when
> > unplugging the cable, instead it thinks there's a power source but not
> > powerful enough to charge the battery, upower says this: "on-battery:
> > no", but actually no ac power source is connected.
> > I did some research with git bisect up to the merge commit
> > `e611c0fe318c6d6827ee2bba660fbc23cf73f7dc` ("Merge tag 'usb-5.8-rc1'
> > of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb"), and
> > looked through its content. My wild guess based on upower output is
> > that a new driver introduced there, /drivers/usb/typec/ucsi/psy.c, is
> > responsible for this wrong behavior.
> >
> > Could you please look into that based on info I'm providing?
> > Thank you!
>
> This sounds a bit like the issue that was reported and fixed here:
> https://lore.kernel.org/lkml/20201009144047.505957-1-benjamin@xxxxxxxxxxxxxxxx/
I agree, sounds very much like the issue I was seeing.
What machine/model are you seeing this on? The PPM is implemented in
Firmware, so the behaviour will depend on the Vendor or even model. I
observed it on a Lenovo laptop, but would be curious to know if similar
issues happen elsewhere.
I only observed an issue when using a thunderbolt dock and not with a
plain USB-C charger.
> Can you try the two patches from that series?
Yeah, that would be a good data point.
Benjamin
> +Bejamin, who prepared those patches.
>
> > Device: /org/freedesktop/UPower/devices/line_power_ADP0
> > native-path: ADP0
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:27:39 +10 (97 seconds
> > ago)
> > has history: no
> > has statistics: no
> > line-power
> > warning-level: none
> > online: yes
> > icon-name: 'ac-adapter-symbolic'
> >
> > Device: /org/freedesktop/UPower/devices/battery_BAT0
> > native-path: BAT0
> > vendor: SUNWODA
> > model: R15B01W
> > serial: ACFA
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:27:39 +10 (97 seconds
> > ago)
> > has history: yes
> > has statistics: yes
> > battery
> > present: yes
> > rechargeable: yes
> > state: charging
> > warning-level: none
> > energy: 46.198 Wh
> > energy-empty: 0 Wh
> > energy-full: 46.664 Wh
> > energy-full-design: 60.04 Wh
> > energy-rate: 2.059 W
> > voltage: 8.672 V
> > time to full: 13.6 minutes
> > percentage: 99%
> > capacity: 77.7215%
> > technology: lithium-ion
> > icon-name: 'battery-full-charging-symbolic'
> > History (charge):
> > 1604813259 0.000 unknown
> > History (rate):
> > 1604813259 0.000 unknown
> >
> > Device:
> > /org/freedesktop/UPower/devices/line_power_ucsi_source_psy_USBC000o
> > 001
> > native-path: ucsi-source-psy-USBC000:001
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:27:39 +10 (97 seconds
> > ago)
> > has history: no
> > has statistics: no
> > line-power
> > warning-level: none
> > online: yes
> > icon-name: 'ac-adapter-symbolic'
> >
> > Device: /org/freedesktop/UPower/devices/DisplayDevice
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:27:39 +10 (97 seconds
> > ago)
> > has history: no
> > has statistics: no
> > battery
> > present: yes
> > state: charging
> > warning-level: none
> > energy: 46.198 Wh
> > energy-full: 46.664 Wh
> > energy-rate: 2.059 W
> > time to full: 13.6 minutes
> > percentage: 99%
> > icon-name: 'battery-full-charging-symbolic'
> >
> > Daemon:
> > daemon-version: 0.99.11
> > on-battery: no
> > lid-is-closed: no
> > lid-is-present: yes
> > critical-action: HybridSleep
> > Device: /org/freedesktop/UPower/devices/line_power_ADP0
> > native-path: ADP0
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:29:25 +10 (18 seconds
> > ago)
> > has history: no
> > has statistics: no
> > line-power
> > warning-level: none
> > online: no
> > icon-name: 'ac-adapter-symbolic'
> >
> > Device: /org/freedesktop/UPower/devices/battery_BAT0
> > native-path: BAT0
> > vendor: SUNWODA
> > model: R15B01W
> > serial: ACFA
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:29:25 +10 (18 seconds
> > ago)
> > has history: yes
> > has statistics: yes
> > battery
> > present: yes
> > rechargeable: yes
> > state: discharging
> > warning-level: none
> > energy: 46.198 Wh
> > energy-empty: 0 Wh
> > energy-full: 46.664 Wh
> > energy-full-design: 60.04 Wh
> > energy-rate: 1.998 W
> > voltage: 8.44 V
> > time to empty: 23.1 hours
> > percentage: 99%
> > capacity: 77.7215%
> > technology: lithium-ion
> > icon-name: 'battery-full-symbolic'
> > History (charge):
> > 1604813365 99.000 charging
> > History (rate):
> > 1604813365 1.998 charging
> >
> > Device:
> > /org/freedesktop/UPower/devices/line_power_ucsi_source_psy_USBC000o
> > 001
> > native-path: ucsi-source-psy-USBC000:001
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:27:39 +10 (124 seconds
> > ago)
> > has history: no
> > has statistics: no
> > line-power
> > warning-level: none
> > online: yes
> > icon-name: 'ac-adapter-symbolic'
> >
> > Device: /org/freedesktop/UPower/devices/DisplayDevice
> > power supply: yes
> > updated: Sun 08 Nov 2020 15:29:25 +10 (18 seconds
> > ago)
> > has history: no
> > has statistics: no
> > battery
> > present: yes
> > state: discharging
> > warning-level: none
> > energy: 46.198 Wh
> > energy-full: 46.664 Wh
> > energy-rate: 1.998 W
> > time to empty: 23.1 hours
> > percentage: 99%
> > icon-name: 'battery-full-symbolic'
> >
> > Daemon:
> > daemon-version: 0.99.11
> > on-battery: no
> > lid-is-closed: no
> > lid-is-present: yes
> > critical-action: HybridSleep
> >
>
> thanks,
>
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