Comment 56 for bug 767975

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Jose Bernardo (bernardo-bandos) wrote : Re: Video does not return after sleep with AMD E-350 Fusion APU and ATI closed driver (Natty Narwal Beta)

Seems I found a workaround - http://www.linuxquestions.org/questions/linux-hardware-18/how-does-hibernate-affect-my-suspend-resume-820417/ - adding acpi_sleep=s3_bios to GRUB_CMDLINE_LINUX_DEFAULT in /etc/grub/default seems to have fixed the resume, at least for short term suspend.