Installing 12.04 - no launcher icons, no wifi The laptop I am trying to convert to ubuntu had XP Pro sp3 on it. It worked fairly well. I was able to use my wifi and get on the Internet and do all the things a PC can do.   So I created a 12.04 DVD install disk. The result was a bit better than trying a USB flash drive. It at least will boot to what I believe to be the splash (maybe a glossary of ubuntu terminology would help). There are the battery, sound, time and little gear looking symbols on the upper right of the screen. There is a column on the left side with a different color, but no visible apps. I hovered the cursor over that area and saw the little side flags popping out to the right showing what each app was (firefox, libre Office, terminal, etc), but the icons are not there. I'm not sure what that might be, but there are some troubles with NVIDIA GeForce FX5200, which is in this pc.  Also, I do not understand why it won't see my wifi. When I run, I believe it was nmtool, in a terminal, all it shows me is wire connection info and no wifi. In bios, there is a Mini PCI device and it shows Wireless. It also shows the device Enabled. Also Wireless is On. The Wireless Control is showing &lt;Fn+F2&gt;Application. Not sure what that means either. At this time, I am trying to create an Ethernet connection, so I have some Internet access.   Any help with my install would be great, also with this wifi issue.  Following is what I gleaned from the bios regarding what is in this pc.  DELL Inspiron 5150 Intel Pentium 4 --- 2.80 GHz / 1.60 GHz Current CPU speed is 2.80 GHz Lvl 2 Cache --- 512 Kb System Memory --- 2048 MB Video controller --- NVIDIA GeForce FX5200 Video Memory --- 32MB Panel Type --- 15” Super XGA+ Audio Controller --- Sigmatel 9750 Modem Controller --- Disabled Primary Hard Drive --- 30GB Modular Bay --- CD – RW/DVD Combo   Edit Dec 7 '14 at 23:33:  @chili555 there was no output from lsmod | grep -e wl -e b43. The result of lspci -nn | grep 0200 is:  02:01.0 Ethernet controller [0200]: Broadcom Corporation BCM4401 100Base-T [14e4:4401] (rev 01)   I was able to connect via Ethernet and re-installed 12.04. I saw during the install files downloading. The install is very unstable. I am able after several restarts to get a Terminal session.  Edit Dec 11 '14 at 3:42:  @chili555 -- found a process for installing NVIDIA GeForce FX5200 drivers. Success.. PC much more stable. Went back and checked wireless commands. All seems to be installed, but still no wireless detection. I see Dell used a small piece of software, I believe called Quickset, to turn on/off the WLAN card. Is there a ubuntu variant to use in its place.  Edit Dec 15 '14 at 4:13:  The results of running: lspci -nn | grep 0280 were:   02:02.0 Network controller [0280]: Broadcom Corporation BCM4306 802.11b/g wireless LAN Controller [14e4:4320] (rev 02)   The driver needed was b43legacy. Performed the following:  sudo apt-get update sudo apt-get install firmware-b43legacy-installer   The install completed successfully, but the wireless isn't seeing my wireless signal. More investigation indicated that Dell used a utility name a Quickset utility to turn on / off the radio on the card. I received a comment to my question that took me to the :  I then went to the FAQ from that page and there was a question:      Q: The radio-enable-button on my laptop does not work.      A: You have to enable RF-kill support in the kernel configuration. The   config options you have to enable are: CONFIG_RFKILL,   CONFIG_RFKILL_INPUT, CONFIG_INPUT_POLLDEV.   Before proceeding I would like to do as the answer indicates, but I do not know what the command string would look like.
Installing Broadcom Wireless Drivers I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible.   What are the steps to install Broadcom wireless drivers for a BCM43xx card?  I'm a user with no advance knowledge in Linux, so I would need clear explanations on how to make, compile, etc.    lspci -vnn | grep Network showed:   Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller [14e4:432b]      iwconfig showed:  lo        no wireless extensions. eth0      no wireless extensions.   NOTE: Answer below is updated every time new information is added and confirmed working.
ReadList can't read from file containing high-precision Reals When to Garbage Collect Mean, Average and Expectation What is the precise difference between the Mean, Average and Expectation ? Is there any mathematical formaulation to show the difference ? I see that often they are used interchangeably. Why not use development provisioning instead of ad hoc? Edelstein Theorem Let $(M,d)$ be a compact metric space and $d(f(x),f(y)) &lt; d(x,y) $ for all $ x\neq y$ Prove that if $f$ is a continuous fuction then there is a unique $x_0 \in M $ such that $f(x_0)=x_0$ I know that since $g(x) = d((f(x),f(y))$ is continuous then a continuous function in a compact space reaches its maximum and minimum. Then by proving that the minimum of $g(x)$ = 0 can I conclude that $x_0$ is a fixed point? Why is Linux's filesystem designed as a single directory tree? How to run a command that involves redirecting or piping with sudo? Is uncertainty principle a technical difficulty in measurement? Is the uncertainty principle a technical difficulty in measurement or is it an intrinsic concept in quantum mechanics irrelevant of any measurement?  Everyone knows the thought experiment of measuring the position of an electron. One can detect electron's position by hitting it with a photon, due to Compton scattering the collision of the photon with electron will change electron's momentum. This experiment is used to explain uncertainty principle to layman, but it is over simplified, isn't it? It also gives an impression that if there was a better suited experimental method the uncertainty principle becomes irrelevant.   I personally think it is intrinsic as it arises from the non-zero commutator of position and momentum operators irrespective of the measurement process. Am I right?  EDIT: My question is similar to certain extent to  and . The answers there are nice but they focus on explaining basics of quantum mechanics more than they comment on the technical difficulty part. In the answers of question 2 there are statements like "So, it's not a knowledge limit" and "you're sort of correct when you say it's an observational limit" without further comments  To summarize, assume hypothetically we managed to find a way in the future where we can have a look at an electron without disturbing it by measurement or causing its wave function to collapse, would the uncertainty principle still hold in such a case?? Why/Why not? I use to run  $s =~ s/[^[:print:]]//g;   on Perl to get rid of non printable characters.   In Python there's no POSIX regex classes, and I can't write [:print:] having it mean what I want. I know of no way in Python to detect if a character is printable or not.   What would you do?   EDIT: It has to support Unicode characters as well. The string.printable way will happily strip them out of the output.  curses.ascii.isprint will return false for any unicode character. How to parseInt a string with leading 0 Are security.ubuntu.com updates eventually merged into normal updates? Upon my observation, seems new packages will first appear in security.ubuntu.com, but if you upgrade later, they will appear in XX.archive.ubuntu.com (depends on your config),  Was that true ? Can a goalkeeper chip the ball to the head of a teammate from a goal kick to circumvent the backpass restriction? Heartbleed: are services other than HTTPS affected? The OpenSSL 'heartbleed' vulnerability () affects webservers serving HTTPS. Other services also use OpenSSL. Are these services also vulnerable to heartbleed-like data leakage?  I'm thinking in particular of   sshd secure SMTP, IMAP etc -- dovecot, exim &amp; postfix VPN servers -- openvpn and friends   all of which, on my systems at least, are linked to the OpenSSL libraries. Journal of Finance Template German '*.bst' I recently moved from having a main site like www.example.com with a subdomain associated site yyy.example.com, to moving everything off the subdomain to a subdirectory like www.example.com/yyy/, with the same hierarchy underneath the subdirectory, and now yyy.example.com is just a redirect page to the subdirectory, so yyy.example.com/abc/page-x is redirected to www.example.com/yyy/abc/page-x and so on.  The effect has been that the traffic increased by several times (the total page views are more than ten times at the present rate) what it was to the yyy subdomain. Previously almost all of the traffic to the yyy subdomain was from the www site. This is from monitoring the old yyy site for a year or more.  I'm curious to know if there's any research or results which would indicate whether this is universal (subdirectories beat subdomains) or "just me". Why does ice melting not change the water level in a container? I have read the explanation for this in several textbooks, but I am struggling to understand it via Archimedes' principle. If someone can clarify with a diagram or something so I can understand or a clear equation explanation that would be great. "To be subject to" vs. "to be subjected to" I read an article from  today which stated:     TTC workers are subject to alcohol and drug testing.   A later paragraph of the same article repeated it, except it used subjected to instead of subject to.  I have rarely seen the use of subjected to before. Is it legitimate in English as well? Why didn’t the author just keep it consistent by using subject to throughout the article? Does using varieties of forms enrich the expressions within an article? Horizontal spacing issue in \listoftheorems using amsthm + thmtools In HTML5, can the  and  tags appear outside of the  tag? Finding the limit $ \lim_{x\to a^+} \frac{\cos(x)\ln(x-a)}{\ln(e^x-e^a)} $