BTW, the system will enter the low graphic mode if you reboot the system after this. Reboot again could solve this low graphic mode issue.
** Attachment added: "pm-suspend.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1204339/+attachment/3937732/+files/pm-suspend.log ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1204339 Title: AMD Radeon HD 7640G[1002:9903] Unable to resume from suspend with radeon driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1204339/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs