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Need help connecting again to external display

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    • M Offline
      mihael
      last edited by 29 Dec 2018, 18:12

      I'm on Pro 5, rc channel. I used to be able to connect to wireless external display but now it sees the TV under settings but when I click to connect to it, it just waits for a while and says "connecting" but nothing happens. In the end it says something like it was not able to connect. Where can I look for errors? Where can I find a log file? Thanks for any help!

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      • I Offline
        Ingo
        last edited by 29 Dec 2018, 18:31

        If you say "used to be able to connect", was that with 15.04?
        Because in 16.04 there is a bug that prevents connecting to a wireless external display.

        For now there is a workaround described in https://github.com/ubports/ubuntu-touch/issues/781#issuecomment-423732902

        M 1 Reply Last reply 29 Dec 2018, 19:46 Reply Quote 1
        • M Offline
          mihael @Ingo
          last edited by 29 Dec 2018, 19:46

          @ingo Thanks for your help. I don't remember if that happened when I switched to 16.04 - it might as well be.

          I tried to add the suggested line to the suggested file and then restarted the phone but it didn't work...

          Any idea what can I do next?

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          • I Offline
            Ingo
            last edited by 29 Dec 2018, 19:51

            Is the added line still there after reboot? If yes, I don't know what else to check 😞

            M 1 Reply Last reply 29 Dec 2018, 20:13 Reply Quote 0
            • M Offline
              mihael @Ingo
              last edited by 29 Dec 2018, 20:13

              @ingo Yes, the line is still there... I tried to put the line in different sections in that file and in the end I put it at the end of the file, outside any section. I also tried manually to disavle apparmor with sudo /etc/init.d/apparmor teardown and then play with aethercastctl - no change. Am I missing something?

              The folder /run/aethercast/ is empty...

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              • M Offline
                mihael
                last edited by 3 Jan 2019, 07:51

                I made it work... According to https://bileto.ubuntu.com/#/ticket/2162, I changed the line from /{,var/}run/aethercast/dhclient*.leases lrw, to /run/aethercast/dhclient*.leases lrw, and then voila! Thank you @Ingo for pointing me into the right direction.

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                • I Offline
                  Ingo
                  last edited by 3 Jan 2019, 12:42

                  That's strange...

                  The curly braces enclose optional parts, i.e. /{,var/}run/aethercast/dhclient*.leases lrw, means /var/run/aethercast/dhclient*.leases lrw, and /run/aethercast/dhclient*.leases lrw,

                  The curly braces ({}) make this rule apply to the path both with and without the content enclosed by the braces.
                  https://www.novell.com/documentation/apparmor/apparmor201_sp10_admin/data/bx5bmkc.html

                  P.S.: because I'm usually on the dev channel and update rather frequently, I wrote a script to re-apply the change after each update: https://gist.github.com/Ingo-FP-Angel/905c5655511435b0ded2eb354dab538b

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