Another issue with my Dell Latitude E6440 with AMD hybrid graphics is suspend not working. Suspend leads to a black screen, the system does not go to sleep and seems to be still running (power LED and fan are still on).
I already tried different kernel: 3.5 (Ubuntu LTS), 3.12 and 3.13 (Debian sid/experimental) without success.
I was wondering if you guys experienced similar behaviour with suspend and if there are workarounds or ways to debug that.