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Old 01-17-2007, 05:22 AM   #1
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black screen during booting in xen

I installed xen using Package Manager(Browse --> Base System --> Virtualization).
Whenever I boot using kernel-xen, it shows blackscreen just after "starting udev" appears, although harddisk is busy.

How can I solve this problem?
Old 01-23-2007, 04:49 PM   #2
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Registered: Apr 2006
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Same problem

Hi there, I'm having the same problem in FC6. The Red Hat Graphical boot seems to be working ok, as it completes fully. After completion, the screen flickers a few times and my monitor displays 'Signal Over Range'. This seems to imply a misconfiguration of x11, but this is odd as it should use the same as the non-xen kernel.

I have read somewhere that this can be caused by having the refresh rate set too high; apparently some older monitors can't support anything above 60Hz (although I seem to remember this one working at 75...)

I would try ssh'ing into the box to see if there is a working terminal, but this is the only linux box in the house and I can't seem to get windows alternatives working.

xorg.conf looks like this;

# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"

Section "Device"
Identifier "Videocard0"
Driver "radeon"

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1024x768" "1024x768" "800x600" "800x600" "640x480" "640x480"
The only thing that seems to be of note is that all the screen resolutions are listed twice; im loathe to change them as I can't yet find any way of booting to the terminal, so could be screwed if I can't boot to gnome in the normal kernel.

Any ideas?
Old 01-30-2007, 10:11 PM   #3
Registered: Jun 2004
Location: Potsdam, NY
Distribution: Fedora Core 6
Posts: 201

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I have had the same problem using an ATi card. I can SSH to the box and start it in any runlevel that isn't 5. There is a problem with an Xorg package.
Old 01-31-2007, 04:47 PM   #4
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Registered: Apr 2006
Posts: 7

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Ok I was doing some digging around (ironically it was while trying to get VMware to behave itself), and I found an error in the Ubuntu 6.10 LiveCD. This only happens on ATI radeon cards, from about the 9200 range upwards. Apparently in that bug it has something to do with the modules loaded by the ATI driver; I think its the drm and something else module, but I can't find the bug report on the site at the moment.

Also, on ubuntu you can boot direcly to a sort of failsafe terminal by passing break=bottom to the kernal at boot. Does anyone know if this does the same in fedora? I don't want to try it in case I turn my lovely fc server into a large paperweight...

Anybody else have any ideas?
Old 12-08-2010, 02:38 AM   #5
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Registered: Dec 2010
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blank screen after boot.

I am have installed Xen from source, and I get a blank screen during the Xen boot. I have an ATI graphics card.
My menuentry reads:
menuentry "Xen 4.0" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set b554a56f-e5bb-4a85-a429-199ecee009f5
multiboot /boot/xen-4.0.1.gz break=bottom
module /boot/vmlinuz-2.6.32-26-server root=UUID=b554a56f-e5bb-4a85-a429-199ecee009f5 ro quiet splash
module /boot/initrd.img-2.6.32-26-server
Has anybody solved this problem? Id be very grateful for some help.


boot, booting, xen

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