Fedora 17 ATi Driver

The following is a method of installing the Catalyst Driver in Fedora 17.


Open terminal
su to root

rpm -Uvh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm


yum install akmod-catalyst -y

Ubuntu – Grub2 no longer updating “Other” OSs.

If in Ubuntu Grub2 is not detecting Windows 7 or Fedora or some other OS, try this.

1) gksudo gedit /etc/default/grub
2) Look for a line that reads : GRUB_DISABLE_OS_PROBER=”true”
3) Comment out that line by placing a # at the front of it.
Like so:

#GRUB_DISABLE_OS_PROBER=”true”

Save the file.

4) Run sudo update-grub2.
5) Check the results.
6) Reboot.

Your menu with all Operating systems should now be available.

Why does copyright matter?

Someone, meaning well, posted one of my solutions verbatim to the Intel community forums.  Whether they got it here or someplace else is irrelevant.

When the poster was notified, that they had violated my copyright,  they promptly removed the post in a very timely and mature manner.   I appreciated that.

Let me make this perfectly clear.   This site and all of  this site’s contents are copyrighted material, and I reserve ANY and ALL rights to it.   You may post a link or track back to this site any place you have an inkling to do so.  That will never be a violation of copyright.  This site is not GNU GPL or CC.  It is copyrighted published material.

You may never copy the material here and place it on another site or print it or store it in any format without my written permission.  If you post one sentence as a quote, I’m not likely to enforce my copyrights.  If you copy an entire article I certainly will.   Even if it is for educational or philanthropic purposes.

Why?

I am the copyright holder.   I have a vested interest in everyone visiting this site directly.

When my material is published at other locations, people are less likely to visit this site.

A scant few of my visitors make purchases that I get a tiny commission from.  The commissions at this point do not pay for the electricity used to run this server on.   The site does not pay for itself directly.  What makes this all worthwhile, is that about one of the visitors to this site a month, calls me for a server, a system or my services.   Some visitors tell friends or family that later purchase a server, a system or my services.  If that were to never happen again, this site would vanish.

Sounds a bit harsh, but that is the way life is sometimes.

I know that some of you might be rolling your eyes about now.  That is fine.    Remember when Tom’s Hardware was ad free for the most part?  Owned by a small company, it was a nice place to visit.  Now,  Tom’s Hardware is owned my some media giant conglomerate corporation.  The articles are not as concise.  They do not create new sets of charts every quarter.   And so on.  Remember any sites you actually liked that no longer exist?  Or have become so different you don’t care for them? Same idea.

So ponder for a moment and decide if you are interested in continuing to visit this site or any other site you enjoy visiting.   If the site you enjoy, is never the site you buy anything  from or through, you will never enjoy the places you buy things.   Some of the places you do enjoy visiting will vanish.  Sometimes you have to vote with your wallet.   When you buy things from Amazon via the links on this site it does NOT change the price you pay.   It does help the site a little bit.

Thank you for visiting,

Jeffrey R. Evans
Founder
Evans Computers

Data communication – of the IEEE 802 type

There is a lot of confusion and misinformation related to data communication.

An interesting snippet related is that data storage occurs in multiples of 1024 per Kilobit or Kilobyte. Data transmission occurs at 1000 per Kilobit or Kilobyte.

Wired communication is typically IEEE 802.3 in a range of speeds 10, 100, 1000 and 10000 Megabits per second. Abbreviated Mb/s. This is often referred to as Ethernet. 10/100 Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet. Note that 100Mb/s and 100MB/s are different values. Mb is Megabit. MB is Megabyte. A bit is 1/8th of a Byte. A Byte is 8 bits.

Wireless communication is typically IEEE 802.11. 802.11 comes in a few different values also. 802.11a is pretty well obsolete and useless. 802.11b is also pretty useless. 802.11g has a maximum throughput of 54Mb/s and 802.11n has a maximum throughput of 300Mb/s.

MoDems ( an acronymn for Modulate/Demodulate ) communicate at kilobaud rates, not kilobits or kilobytes. Modems are analog devices that connect a computer or other digital device to an analog medium. A baud is the amount of data to create one symbol, but not a bit or a byte.

Any device that connects your computer to a Digital Subscriber Line (DSL) or Cable is not actually a MoDem at all. It is a network bridge. It passes the digital signal of your computer from Ethernet to DSL or Ethernet to RG-58 or even Ethernet to Fibre in some cases. It does not MOdulate or DEModulate the signal. It may multiplex the signal but that’s a story for another day.

Something that often gets overlooked in data communication speed is overhead. No matter what brand or type of hardware, no matter how great the cable or the wireless devices, networks ALWAYS have overhead, some types of networks are more efficient than others. Network layer overhead is the amount of the network capacity that is required to establish and maintain the basics of communication. Typical network layer overhead for IEEE 802.x is twenty percent. The overhead of each PACKET of data sent via Ethernet is 8 percent. There are 2 types of network overhead. A) Protocol Overhead and B) Network Layer Overhead.

A classic example of this in actual use is FTP vs. HTTP for file transfers. FTP is always faster than using HTTP if you are using the same network. FTP does not send a confirmation frame at the end of transmission. HTTP does.

Another commonly maligned term is Bandwidth. Bandwidth is NOT the amount of speed you have available. Bandwidth is the difference between the lowest and highest frequency of the carrier signal. It is a determining factor for the RATE of data flow but not actually the rate of data flow. Think of this as the diameter of the water pipe. The water pipe diameter can determine the maximum flow of water at a given pressure, but it does not determine what the current flow is. It is merely the top end theoretical limiting factor. Bandwidth is measured in hertz. Abbreviated Hz.

Now let’s look at a term called “Goodput”. Goodput is the theoretical maximum taking protocol and network overhead into account. It DOES NOT factor in retransmissions for dropped packets, confirmation packets for TCP, or interframe gap overhead. Goodput on a 100Mb/s Ethernet cable is 12MB/s. You will never actually get that rate of speed from a 100Mb Ethernet connection. Goodput for a Gigabit Ethernet is 120MB/s. Again still a theoretical value. Actual burst rates are usually in the range of 100MB/s for a Gigabit Ethernet connection. Sustained rates often drop to 75MB/s or lower.

These overhead factors effect wired and wireless communication in the same ways.

A 300Mb/s IEEE802.11n connection has a theoretical Goodput rate of 36MB/s. Which is indeed faster than 100Mb/s Ethernet’s Goodput rate of 12MB/s.

So yes, 802.11n can be and typically is faster than 100Mb/s Ethernet. Not as fast as Gigabit Ethernet though.

There are three other major factors to take into consideration when deciding between an 802.3 Network and an 802.11 Network.

1) Security – Hands down 802.3 Wins this point. Even when you employ every security measure possible, 802.11 is not very secure.

2) Price – 802.11 Typically wins this battle by a huge margin. CAT6 cable is not cheap.

3) Mobility – 802.11 ALWAYS wins this point.

We have but one Internet, and yes is has wires in many places. Yes, Internet is a proper noun even.
There is no such thing as Wireless Internet.
I always chuckle when I hear someone in an IT capacity say Wireless Internet, it defines their lack of expertise.

Improve your relationship with your consultant

1. Never use the phrase “it’s not rocket science”  in reference to computers or computer science.   You will be correct.   Computer Science requires a much higher level of dedication and personal time invested in learning than rocket science does.  The principles of physics that govern rocket science have changed very little in 100 years.  Gravity is still a constant on Earth.  Computer science has evolved in a much more explosive manner.  When I attended formal computer training in 1989, there were a handful of applications available for PCs.   Procomm for word processing, database, and spreadsheets.  Harvard graphics for graphics.  Windows and DOS for operating systems.  Now there are an undocumented number of programs available.  For operating systems alone, we have Linux in a great number of distributions.  There are three different versions of Windows: XP, Vista, and Windows 7 not counting the 64bit variations.  There are exotic choices such as Mac OS for a PC.  Networking did not exist.  The Internet was available for military and institutions of higher learning.

2.  Do Not call your consultant for “advice”.   Would you appreciate someone calling you during your off time and asking you to provide detailed information about your work for free?

3.  Do NOT send your consultant an email asking for the “advice”.   Same as rule 2.

4. Do NOT ask for “advice” from your relatives who are consultants.

5. If you violate tips 2, 3, or 4 don’t be surprised when the consultant invoices you for the time, at holiday rates where applicable.  Even worse the next time you need services, that their schedule is booked for the next 6 months or longer.

6. Do NOT negotiate the price after the services are provided.  As with any other form of negotiation, keep this up front at the beginning.  It avoids misunderstandings.

7. DO negotiate before the work begins.  Consultants are often open to negotiation on the price.

A freebie:  Do NOT call on a consultant to provide assistance with your technical issues for free, EVER.  If you are a regular client this MIGHT be acceptable from time to time.  If you bought a system from them,  it is probably acceptable to ask their advice about something related to the system you purchased from them.   Asking them to help you professionally out of the goodness of their heart when you bought that inexpensive HP or Dell computer at Costco or Sam’s Club, will cost you more than money.    Ask the consultant when their next appointment is available and pay them without grumbling, with a smile.

You will end up with computers that actually perform.  Your consultant will be happier to see you.  You may even save some money.  There may be a consultant available to answer your call the next time you have an issue.  A reputable computer consultant is hard to find.  Even harder when you attempt to pay them less than your mechanic.