Using Fedora 28 in my system(i7-3612qm/AMD HD8750M(OLAND)/4.16/GNOME 
3.28/Wayland) ,almost when i try to navigate between apps, screen freezes for a 
bit and then unfreezes. No problem appears in ABRT nor SELinux alert. Only in 
the dmesg , a error in radeon driver appears:
radeon 0000:01:00.0: VCE init error (-110).
I understand that it is a known bug with radeon driver but now i think that 
GNOME 3.28 handles hybrid graphics differntly, it is a issue.
A workaround for this ( i have tested it myself) is using the AMDGPU driver for 
SI. But the CONFIG_DRM_AMDGPU_SI flag must be enabled.

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