Thanks Eric
ii apparmor 2.10.95-0ubuntu2.6~14.04.3
there is no pre-installed snapd on trusty so i needed to install snapd first
1. set sysctl 2. add -proposed 3. apt install snapd 4. reboot 5. snap install --dangerous oldverioncore
symptom is gone
Thanks.
Thanks Eric
ii apparmor 2.10.95- 0ubuntu2. 6~14.04. 3
there is no pre-installed snapd on trusty so i needed to install snapd first
1. set sysctl
2. add -proposed
3. apt install snapd
4. reboot
5. snap install --dangerous oldverioncore
symptom is gone
Thanks.