Red Hat Bugzilla – Bug 332711
Switching to textmode from dual-screen with Xorg with ATI , text mode stays black.
Last modified: 2008-06-16 22:40:03 EDT
Description of problem:
I'm running FC7 on a HP NC6000 laptop with an "ATI Technologies Inc RV350
[Mobility Radeon 9600 M10]" built-in graphics card with
The laptop/gfx card allows me to attach an external monitor and as such I'm
now running Xorg with Dual-Screen: Screen 1 is the internal flat panel
(1024x768), screen 2 is the external monitor (1600x1200).
It works pretty well.
The only problem I have is, is that if I run this dual-screen configuration,
then switching to text mode with Control-Alt-F1 is possible, but the screen
stays black (i.e. it seems it switches to the text mode, but does not show any
characters). When I pull out the laptop of the bay, and run Xorg in
signle-screen-mode, then switching to text mode does work.
Created attachment 227741 [details]
Xorg log file incl. traces from switching to text mode.
One additional note:
If I switched to text mode, the screen is black. Then, when I press
Control-Alt-F7 again to switch back to the graphical X screen, I can see the
text console characters (basically the fedora login-prompt) for half a second
before it switches to the graphical mode.
It seems, that some registers in the radeon driver haven't been correctly
initialized in this dual-screen configuration for text mode.
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