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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I have problems with my video card detection/drivers from time to time due to automatic updates of my Fedora Core 9 system. The old driver I used to fix the problem doesn’t work anymore, thus I run this to get things working:
This command will cause connect to the NVIDIA FTP server ‘ ftp://download.nvidia.com ‘ and determine the latest available driver version. If there is a more recent driver available, automatically download and install it.
Why don’t I just run
Because if you have to do this from time to time, there may be no newer driver available, thus the system may believe the latest driver is already installed and will do nothing.
With the ” -f ” flag nvidia-installer performs “forced update” – the driver will be downloaded and installed forcedly.
Now, just reboot your mashine.
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).
Recently I had a problem with my integrated videocard detecting (Nvidia nForce 630i) when installed Fedora Core 8 (which even did not recognize the card). I tried to install drivers via yum (#yum install kmod-nvidia) but with no success. Fortunately Chris Schuld provided a nice solution, videocard drivers was installed in seconds and X server configured:
NVIDIA-Linux-x86-173.14.12.pkg1.run (direct download)
I had a similar problem a bit later, when installed Fedora Core 9, the tool helped me again. Probably this post will save some time for someone…
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).