I should have been more specific in Kim's description of the symptoms. This is what he writes:
Please note that the PC display is not hanging. It continues on and displays a screen either as tty7 or tty8. If the display is tty7, there are framebuffer error messages above the tty login prompt on tty1 ; if the display is on tty8, there are framebuffer error messages on the tty7, with tty7 not showing any other text/graphics.
I should have been more specific in Kim's description of the symptoms. This is what he writes:
Please note that the PC display is not hanging. It continues on and displays a screen either as tty7 or tty8. If the display is tty7, there are framebuffer error messages above the tty login prompt on tty1 ; if the display is on tty8, there are framebuffer error messages on the tty7, with tty7 not showing any other text/graphics.