Xorg failure when using the radeon driver with ATI Juniper GPU on oi_b148
I recently updated from snv_b134 to oi_b148 and after that Xorg fails to produce an image when using the radeon driver. The image is normal during boot up until Xorg initiates where the screen goes black instead of showing the gdm login splash.
Procedures have been taken to check that the cables and the monitor are ok. The screen blanking and power management features have been ruled out. The VESA driver works.
System: io_b148 on an AMD Phenom II x4 with 4GB RAM and an XFX Radeon HD 5770 (Juniper) 1GB. I supply a log file and a sample xorg.conf file.