[Ubuntu Wiki] Update of "DebuggingKernelBoot" by brian-murray
Ubuntu Wiki
noreply at ubuntu.com
Tue Mar 1 16:13:28 UTC 2011
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The following page has been changed by brian-murray:
http://wiki.ubuntu.com/DebuggingKernelBoot?action=diff&rev1=10&rev2=11
The comment on the change is:
Add in vt.handoff=7
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When trying to capture relevant error messages that appear at boot it is often useful to boot with the '''quiet''' and '''splash''' options removed. This will hopefully allow you to see any messages that come across your screen. To edit boot option parameters, do the following:
1. Boot the machine.
- 1. During the BIOS screen, press the shift key and hold it down. You should get the GRUB menu after the BIOS loads.
+ 1. During the BIOS screen, press the shift key and hold it down. You should see the GRUB menu after the BIOS loads.
1. Navigate to the kernel entry you want to boot, and press 'e'.
- 1. Then remove the '''quiet''' and '''splash''' keywords (found in the line starting with linux) and press 'Ctrl+x' to boot.
+ 1. Then remove the '''quiet''' and '''splash''' keywords (found in the line starting with linux)
+ 1. If running Natty (Ubuntu 11.04) also remove the parameter '''vt.handoff=7'''.
+ 1. Press 'Ctrl+x' to boot.
It's best if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a digital photo will work just as well. As a last resort you can even copy messages down by hand.
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