On Mon, Nov 09, 2020 at 08:48:06PM +1000, Vladimir Yerilov wrote:
> Good day everyone,
>
> 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/
Can you try the two patches from that series?
+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_USBC000o001
> 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_USBC000o001
> 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,
--
heikki
