Hi, Michal The PES mainstream team identified that it has a higher probability happend, if the user runing the emulator on a virtualzation disabled machine.
The user does not even get the panel / welcome screen / greeter, the whole "screen" of the emulator is blank. It comes back *sometimes* if restart unity8 by $ kill -9 $(pidof unity8) $(pidof unity8-dash) Here is my theory - When disabled virtualzation in emulator, the system will be running very slow, and it's possible incrase odds for a race condition of the unity8/unity8-dash. Reference - The developer need to have VT-X/AMD-V hardware for the emulator, and it need to be enabled from BIOS to have better emulator performance. The developer can check with the following command - # check if the hardware support virtualzation $ grep -e svm -e vmx /proc/cpuinfo # check if it's enabled from BIOS $ sudo apt-get install cpu-checker && kvm-ok -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1396919 Title: unity8 display blank in emulator, host utopic, rtm-14.09 instance. Status in unity8 package in Ubuntu: Confirmed Bug description: As run emulator, device screen is blank. Step to reproduce: 1. install utopic. 2. sudo add-apt-repository ppa:ubuntu-sdk-team/ppa 3. sudo apt-get install ubuntu-sdk 4. launch ubuntu-sdk and install chroot:click-ubuntu-sdk-14.10-armhf, and chroot:click-ubuntu-sdk-14.10-i386 5. create device instance i386 / rtm-14.09 and launch it. Expected result: See ubuntu phone UI there. Current result: Emulator screen is black. Extra Note: 1. On the pc, in the first run of the instance, I can see phone interface on first boot after I "kill -9 unity8 unity8-dash". But this work around failed as I stop the instance and run again. I even create the same instance with the other name and try this work around, still can't see anything on the screen. 2. I can run test_glesv2 and see the result on the screen of the display correctly. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1396919/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp