Hi. I tried to "snap refresh pi3 --channel=edge" "snap refresh pi2-kernel --channel=edge"
The rainbow square is still appeared. Is this the correct way to upgrade gadgets and put the firmwares onto the system? # snap info pi3 name: pi3 summary: "Raspberry Pi 3 support package" publisher: canonical description: | Support files for booting Raspberry Pi type: gadget tracking: edge installed: 16.04-0.5 (14) 6MB - refreshed: 2017-01-18 15:02:58 +0000 UTC channels: stable: 16.04-0.5 (6) 6MB - candidate: 16.04-0.5 (6) 6MB - beta: 16.04-0.5 (6) 6MB - edge: 16.04-0.5 (14) 6MB - # snap info pi2-kernel name: pi2-kernel summary: "The canonical raspi2 armhf kernel" publisher: canonical description: | The Ubuntu linux-raspi2 kernel package as a snap type: kernel tracking: edge installed: 4.4.0-1040-47 (26) 101MB - refreshed: 2017-01-11 11:52:04 +0000 UTC channels: stable: 4.4.0-1030-3 (22) 89MB - candidate: 4.4.0-1030-3 (22) 89MB - beta: 4.4.0-1044-51 (27) 100MB - edge: 4.4.0-1040-47 (26) 101MB - -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1647936 Title: Raspberry Pi 3: a small rainbow square on the top right of screen Status in Snappy: Fix Committed Status in linux package in Ubuntu: Invalid Bug description: I'm working on the WD/nextcloud project, and found this issue Download the UC16 for Raspberry Pi 3 from http://releases.ubuntu.com/ubuntu-core/16/ubuntu-core-16-pi3.img.xz unxz , dd the image to sd card and boot up the system. There is a small rainbow square on top right of HDMI monitor. From RPI forum: https://www.raspberrypi.org/forums/viewtopic.php?t=82373 If the voltage is under 4.65V, firmware displays a rainbow square on top right of screen and power LED goes off. But for UC16 the rainbow square is always there even the voltage is sufficient, but the power LED works properly. So I also check 1. Ubuntu server for RPI3 from here: https://wiki.ubuntu.com/ARM/RaspberryPi This RPI3 image works properly (if the voltage is not sufficient, rainbow square shows on the top right of screen, if it's sufficient, no rainbow square shows up) 2. Rasbian (jessie lite): https://downloads.raspberrypi.org/raspbian_lite_latest This works properly too, and the official Rasbian was released with the latest firmware, so the rainbow square changes to a lighting icon It looks the firmware might be old in UC16? so the under-voltage warning doesn't display correctly. To manage notifications about this bug go to: https://bugs.launchpad.net/snappy/+bug/1647936/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp