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Old 05-01-2013, 03:05 AM   #1
turbobee
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Registered: May 2013
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Question Console after booting Xen Kernel on Ubuntu 13.04


I installed Xen using the recommended procedure on Ubuntu's site using motherboard Supermicro X7SBL-LN2 and Ubuntu 13.04 amd64. After the installing it and rebooting my console looks like this: https://www.youtube.com/watch?v=-UbZt7Gix2Q I've had this happen also with CentOS 6 as well. Everything on the server works fine but the console is unusable. If I switch back to the stock kernel it goes back to normal and I can use the console again but then I can't use Xen. This is a fresh install of Ubuntu 13.04. Any help troubleshooting this problem is appreciated.

Thanks!
 
Old 05-08-2013, 03:36 PM   #2
Pearlseattle
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Distribution: Gentoo
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A shot in the dark: perhaps some framebuffer module is conflicting with Xen?

1) Maybe if you check the output of "lsmod" when using the stock kernel and compare it to the same output when using the new Xen kernel (using a different kernel when using Xen?) you'll see a module that is loaded only when using Xen? => blacklist it.

2) Perhaps by checking the output of "lsmod" (connecting to it using ssh from another PC) when booting with the Xen-Kernel you can select the modules that are not really needed and then blacklist them all to see if it gets better?


Unluckily I just know that with the Gentoo distribution the blacklisting of kernel modules is done by specifying their names in "/etc/modprobe.d/blacklist.conf" and have no clue if Ubuntu uses the same file or some other one
 
Old 08-06-2013, 02:26 PM   #3
turbobee
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Registered: May 2013
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I contacted Supermicro about the problem and they gave me a beta BIOS for the motherboard to try. Surprisingly it actually fixed the problem. Since the BIOS isn't posted on their site I'll just leave a link here to it in case anyone else is having this problem. Use BIOS at your own risk as it is a beta BIOS.

http://geo.animounted.net/X7SBL1.113.zip
 
  


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