@Simon, thanks for the clear steps. I see that the panic is caused by the 'trust-prompt' executable's quick scene graph renderer (QSGRenderThread) thread. It happens in the Camera app too, but easier to repro using the Telegram app.
Updating the description with a quicker method to repro. ** Description changed: Test case. - Flash the phone. - Open Telegram app. - Fill the account details. - Add a contact (if needed). - Select a contact to send a message. - Tap on the clip to attach a photo. - Select the camera. Expected result. - After accepting the permission dialog, camera app allows to take a picture. Actual result. - After accepting the permission dialog, phone reboots. I'm not sure whether this is a problem with Telegram or with the camera. However, I couldn't reproduce the problem using the messaging-app. And once the permission dialog is accepted, the reboot is gone. com.ubuntu.telegram_2.0.8.0_armhf.click current build number: 259 device name: arale channel: ubuntu-touch/rc-proposed/meizu.en -------------------------- Same happens with the following steps: 1. Flash device (arale) with $ ubuntu-device-flash touch --device arale --channel ubuntu/rc- proposed/meizu.en --recovery-image <path-to-recovery-with-adb-support> --bootstrap 2. Wait until flash process is done 3. Go through first-start wizard 4. Pass tutorial 5. Directly launch camera-app, approve trust-prompt Repeat 1-5 multiple times and you will see a frozen device after step 5. You can verify it happened due to a kernel panic mentioned in comment - #7. To verify it was really the kernel panic run + #7. + + You can reset the trust db entry for the camera app using : + $rm -rf ~/.local/share/CameraService + $restart cameraservice-trust-stored + + Run the following to get the command line for all threads so you can match the pid from the kmsg later (see below): + ps H -eo 'pid tid cmd:250 comm' + + To verify it was really the kernel panic run $ sudo cat /proc/last_kmsg once the device has rebooted. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1551811 Title: Opening the camera for the first time leads to reboot To manage notifications about this bug go to: https://bugs.launchpad.net/camera-app/+bug/1551811/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
