Screen goes black and EDID errors after Radeon driver initialization in Red Hat Enterprise Linux 6

Issue

• During installation of RHEL 6.1, 6.2 and 6.3, the console will go black/blank. EID error messages are logged to the screen and /var/log/messages. Boot process takes longer than normal.

• Messages logged from RHEL 6.1 & 6.2, note the Raw EDID string is blank:

Apr 20 16:34:58 hostname1 kernel: [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 193
Apr 20 16:34:58 hostname1 kernel: Raw EDID:

• Messages logged from RHEL 6.3, note the Raw EDID string is a series of "ff ff ff...":

[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 193
Raw EDID:
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff ff 5a 41 54 4e ff ff ff
        ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff