Having problems with artifacts running Docky in 3D mode under Linux?

I will have to admit that Docky is one of my guilty pleasures running under Linux.  I noticed I was having artifacts on either side of my dock any time I enabled 3D mode.  After a lot of Googling the issue, I saw that I was not alone.  Most of the articles suggested a bug in the driver and suggested updating to the new driver (in my case, this was the proprietary ATI driver).  Updating it did not seem to make a difference.  As a fluke, I quit Docky and restarted it and the artifacts were gone and all was right with the world (until I made another configuration change).  Quitting and restarting solved the issue again.

So if you are having issues with your Docky install, quit Docky and start it again.  It might not work in all cases, but it worked a treat in my case.


Setup Edimax USB wireless adaptor in Ubuntu

Linux and Ubuntu generally impresses me with the number of devices you can plug in and it just works.  Installing the Edimax EW-7811UN was not one of those times.  To be fair, I also had the same issue with an older model Linksys WUSB54GSC, but the form factor of the new Edimax was just too good to pass up (it bills itself as the worlds smallest wireless adaptor).    No matter how hard I tried to keep the Linksys adaptor out of harms way, my kids have generally tried to find way to try to break it off in the USB slot.  They take this mission very seriously although the Linksys adaptor has survived against all odds.

The nice part about the Edimax network adaptor is it does come with a set of drivers that compiles under linux but you have to download it from their web site.  Actually it is based on the Realtek RTL8192C chipset so do not be surprised when you extract the driver package.  Now on to the fun stuff.

Go into the directory where you extracted the drivers and build the modules:

make clean

That should  go ahead and build your modules.  Next we just need to use insmod to install the module to make sure everything is working:

sudo insmod 8192cu.ko

If all went well, you should soon be able to see your wireless network and connect normally.  If you are a glutton for punishment you can do this every time you start up your system to get net access going.  Personally, I prefer it just to work every time I turn on the system and it just requires a few more steps:

sudo cp 8192cu.ko /lib/modules/`uname -r`/kernel/drivers/net/wireless
sudo insmod 8192cu.ko
sudo depmod -a

This will copy the newly compiled module into the kernel drivers directory and the depmod -a should add it to the module dependencies.   I am thinking this will probably have to be done on every kernel upgrade until the hardware is automatically detected so I am keeping my driver’s source around in case I need to recompile and reinstall the module.

Now to see what the kids try to break next….

Install Ubuntu on Dell XPS 400 and Dell E196FP Display

I received an email from Michael and he was having some issues installing Ubuntu on a Dell XPS 400. I wrote entries on this when I was first getting heavily into Linux that were far more complicated than they needed to be. He was having problems following those posts so I came up with a simplified version.

Here is what I suggest:

Boot Ubuntu [9.04], on the first screen choose your language [English] Then press F4 and select [Safe Graphics]

Then press [F6], but do not select any option. Instead press [Escape] and it will allow you to change the command line. Remove the option “quiet splash –” and replace it with “vga=791” instead

Start the installation

This should install Ubuntu in safe graphics mode at a resolution of 1024×768. Once the installation is finished you should be able to enable the nVidia driver and get the better resolution and color depth.

This should also work for anyone with a nVidia chipset that does not correctly get identified at installation.