Please note that I reinstalled Ubuntu 17.10 completely (the first time was an upgrade from 17.04) to eliminate any residual component that may interfere with the test. The results are the same.
I also tried sleep mode from an USB live flash drive installation of Ubuntu 17.10. The result is a bit different: on wake-up, the monitor powers on and displays the desktop, but the desktop is frozen and only a corrupted mouse cursor can be moved.
We have mostly the same lspci output, Kai Heng. I attach a picture of the comparison.
I'm going to visit https:/ /bugzilla. freedesktop. org/ and hopefully someone will understand what is happening with that bug.
Please note that I reinstalled Ubuntu 17.10 completely (the first time was an upgrade from 17.04) to eliminate any residual component that may interfere with the test. The results are the same.
I also tried sleep mode from an USB live flash drive installation of Ubuntu 17.10. The result is a bit different: on wake-up, the monitor powers on and displays the desktop, but the desktop is frozen and only a corrupted mouse cursor can be moved.