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virtualbox package

Alt+SysRq+B in VirtualBox

Asked by Enda

How do send Alt+SysRq+B to the OS in VirtualBox?

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Sam_ (and-sam) said : 		#1

Hope it helps.
http://allmybrain.com/2010/04/29/debugging-linux-kernel-modules-with-virtualbox-and-kgdb/
https://forums.virtualbox.org/viewtopic.php?f=9&t=44566
https://forums.virtualbox.org/viewtopic.php?f=6&t=10400
https://en.wikipedia.org/wiki/Magic_SysRq#Alternate_ways_to_invoke_Magic_SysRq

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Enda (enda-k2) said : 		#2

I don't get this command (in https://forums.virtualbox.org/viewtopic.php?f=9&t=44566#p207673):

VBoxManage controlvm [vbox-name] keyboardputscancode 1d 38 54 [request type press/release] d4 b8 9d

What exactly should I type?

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Manfred Hampl (m-hampl) said : 		#3

see http://www.halfdog.net/Misc/TipsAndTricks/VirtualBox.html (below "Running, Debugging")

Alt+SysRq+B is sent by providing 30 b0 as 'request type':

VBoxManage controlvm [vbox-name] keyboardputscancode 1d 38 54 30 b0 d4 b8 9d

[vbox-name] is the identifier (name, uuid) for the guest system that you want to manage.

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