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    FP2 doesn't wake up after sleep - how to debug?

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      • R Offline
        rndevfx
        last edited by

        Hi everybody,

        I'm new to UBports and installed the latest version on my Fairphone 2 yesterday. It works nice but sometimes the phone doesn't wake up after sleep. The screen stays black and nothing happens.

        Is there a way to debug this?

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        • H Offline
          hans1977se @rndevfx
          last edited by

          @rndevfx Have you tried to press both volume button and power button to wake it up? I know that Nexus 5 does not always wake up when pressing the power button, but wakes up when both these buttons are pressed. Maybe same with FP2? 🙂

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          • W Offline
            wgarcia
            last edited by

            For the Nexus 5 a workaround is to disable automatic brightness.

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            • BastosB Offline
              Bastos
              last edited by

              I had that once at my FP2. I solved it by tapping on the screen after pressing power button. But since over one month I do not have the problem anymore.
              @wgarcia is maybe right. I switched off automatic brightness anyhow.

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              • R Offline
                rndevfx @wgarcia
                last edited by rndevfx

                @wgarcia yes, that was one of my first thoughts as well. But it still happens 🙂

                Thanks for all the other answers @hans1977se and @Bastos - I'll try it if it happens again. This morning it happened after each sleep but now it runs without any problems. I'll send you some feedback

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                • H Offline
                  hans1977se @wgarcia
                  last edited by

                  @wgarcia Worked for me too. 🙂

                  @Bastos I tried on Nexus 5, works. Also pressing the power button followed by sweep works, which i actually think is kind of a feature. 😄

                  @rndevfx Will be interesting to read your feedback. 🙂

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                  • R Offline
                    rndevfx
                    last edited by rndevfx

                    Okay, I've got it. It only appears when I attach / detach the micro usb cable for loading the battery. When I remove the cable, the phone won't wake up again or (if the display was on) after the next sleep. Same thing happens when I attach the power cable.

                    I logged in via ssh and got this from syslog: https://paste.ubuntu.com/25171358/
                    After the last "handle_power_button_press" nothing happens - even when I press the button again (or press other buttons). SSH-connection is alive and the phone command line is usable.

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                    • H Offline
                      hans1977se @rndevfx
                      last edited by

                      @rndevfx Nice findings. 🙂 Looks like a good idea to put in a new issue for FP2. https://wiki.ubports.com/wiki/UBports-Bug-Trackers

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