Recently I needed to install Windows XP under VirtualBox on my Fedora Core 9 mashine.
After a successfull VirtualBox installation, I got an error when trying to install Windows from .iso image:
VirtualBox can’t operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and reboot (VERR_VMX_IN_VMX_ROOT_MODE).
The error message means your kernel has loaded kvm module which conflicts with VirtualBox.
How to fix the problem?
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If you do web development you may want to test your web applications under IE.
In case you work under Linux you have a few options for this:
a) have another machine with Windows installed
b) have Windows installed on the same machine and reboot each time you need to perform some testing (don’t forget a need to run web server under Windows too or upload your changes to a live server)
c) have Windows installed on the same machine and try to launch IE using wine
d) use IEs4Linux
As for me – option a) isn’t convenient (and requires additional computer involved), b) is very time-consuming, c) is too hard task and also requires a time to get all working (if it will work at all). I found that option d) fits my needs of quick testing in the best way: IEs4Linux – is a tool which installs a lightweight IE package on your Linux system (as I understand this is a variation of the option C) – they even offer a few versions of IE. The package is installed quite fast and easy even for me – not an admin person.
Well, it may glitch sometimes (as IE does in general), but what you get is pretty enough to check some JS/HTML.
Last.fm released scrobbler for Linux, before they offered to use Amarok, which wasn’t very convenient for me to use with their service of online listening to library/stations.
The scrobbler from their official site couldn’t be compiled (occasionally) but I found last.fm client in rpmfusion-free-updates yum repository (#yum install lastfm.i386).
A time ago I found a pretty useful tool to connect from my win workstation to linux machine: the tool is named NOMACHINE and allows to connect to KDE desktop with no functionality loss and full color support (sometimes that’s very important). It saves me a lot of time when I work in Photoshop and need the same time to manipulate with html/sliced images on my local development server. The only thing which confuses me is functional keys handling, for example in full scren mode Alt+Tab sometimes switches me to windows desktop instead of switching KDE desktop windows. Hope developers of the tool will add a special keys sequence to switch between Nomachine client and win desktop (like rdesktop has: Ctrl+Alt+Enter).