As far as I can tell from my recent experiences the black screen means that the ATI r128 drivers uses the VGA output instead of the builtin CRT. I speculate that this is a PC inheritance. The VGA output is well hidden under a hatch at the back, on my 400 MHz grape iMac DV at least, so I attached a VGA screen there. The X output nicelly appeared on the VGA screen only.The framebuffer driver used before X is up outputs console on both outputs. Unfortunality a bug:
As far as I can tell from my recent experiences the black screen means that the ATI r128 drivers uses the VGA output instead of the builtin CRT. I speculate that this is a PC inheritance. The VGA output is well hidden under a hatch at the back, on my 400 MHz grape iMac DV at least, so I attached a VGA screen there. The X output nicelly appeared on the VGA screen only.The framebuffer driver used before X is up outputs console on both outputs. Unfortunality a bug:
https:/ /launchpad. net/distros/ ubuntu/ +source/ xserver- xorg-video- ati/+bug/ 63072
inhibits the UseFBDev option wich has to be turned to "false" in the xorg.conf and the Monitor options doesn't seem to have any effect.