I have an X7DWN+ with SIMSO+ IPMI card. The KVM Console works fine for BIOS and under Windows Server 2003. However, when running SLES 11 Linux, I get "no signal" once X starts. If I drop out of X back to command line terminal (Ctrl-Alt-F1), the KVM console works again. What do I need to configure in Linux to allow the graphical interface to work with the KVM console?
This looks to be a video driver issue. Changing the video driver type has solved similar "local screen no display" in Linux OS like Red hat, fedora etc.
Please try the following.
1. Go to "/etc/x11/xorg.conf
2. There will be a "VGA" entry over there.
3. The driver will have the following fields:
"ati"
"Radeon"
Change Radeon to "vesa".