My wireless doesn't work with Ubuntu 12.04.(it worked with 10.04 LTS) I have a Dell Inspiron 1501. I followed the steps posted below:  Run these:  sudo apt-get install --reinstall bcmwl-kernel-source broadcom-sta-common broadcom-sta-source  echo "blacklist brcmsmac" | sudo tee -a /etc/modprobe.d/blacklist.conf  echo "blacklist bcma" | sudo tee -a /etc/modprobe.d/blacklist.conf  The first makes sure that the sta driver is in place, the second and third blacklists the two drivers brcmsmac and bcma which clash with the correct sta driver. Copy/paste or make sure your typing is correct! The last step is to go to 'Additional drivers' and enable the driver.**  ....and now i have no Network device on my PC(wired or wireless)
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.
Does anyone know what this probability question is asking? What is a Superblock, Inode, Dentry and a File? From the article  by M. Tim Jones, I read that Linux views all the file systems from the perspective of a common set of objects and these objects are superblock, inode, dentry and file. Even though the rest of the paragraph explains the above, I was not that comfortable with that explanation. Could somebody explain to me these terms? Parsing input with scanf in C I've been having a lot of problems trying to figure out how to use scanf().  It seems to work fine with integers, being fairly straight forward scanf("%d", &amp;i).  Where I am running into issues is using scanf() in loops trying to read input.  For example:  do {   printf("counter: %d: ", counter);   scanf("%c %c%d", &amp;command, &amp;prefix, &amp;input); } while (command != 'q');    When I enter in a validly structured input like c P101, it seems to loop again before prompting me.  This seems to happen even with a single:  scanf("%c", &amp;c)    in a while loop.  It'll do the loop twice before prompting me again.  What is making it loop twice, and how do I stop it? When I enter in less amount of input that programmatically wouldn't have another character or number such as q, pressing enter seems to prompt me to enter more.  How do I get scanf() to process both single and double character entries? Eigenspace of the companion matrix of a monic polynomial How do I prove that the eigenspace of an $n\times n$ companion matrix  $$ C_p=\begin{bmatrix} 0 &amp; 1 &amp; 0 &amp;\cdots &amp; 0\\ 0 &amp; 0 &amp; 1 &amp;\cdots &amp; 0 \\ \vdots&amp;\vdots &amp;\vdots&amp;\ddots&amp;\vdots\\ 0 &amp; 0 &amp; 0 &amp;\cdots &amp;1 \\ -\alpha_0 &amp;-\alpha_1 &amp;-\alpha_2 &amp;\cdots&amp;-\alpha_{n-1} \end{bmatrix} $$ equals $\operatorname{Span}\{v_{\lambda} \} $ where $v_{\lambda}$ is an eigenvector of the companion matrix w.r.t. the eigenvalue $\lambda$: $$ v_{\lambda} =  \begin{bmatrix} 1 \\ \lambda\\ \lambda^{2} \\ \vdots\\ \lambda^{n-1} \end{bmatrix}. $$ Is is possible to restore the MFT of a NTFS partition after a format? I'm currently reading the TeXbook, and I use \show a lot to see how Knuth defined plain-TeX macros in terms of TeX primitives. For instance, to have access to the definition of \centerline, I would write \show\centerline in my input file. When I compile  that file with pdftex in interactive mode from the command line (a Unix terminal, in my case), TeX generates an error message that shows me the definition of \centerline in the terminal and offers me a menu of options (as described in Chapter 6: Running TeX in the TeXbook).  I understand that design choice by Knuth of having TeX generate an error message for each instance of \show: he probably wanted to leave the user some time to read what \show... prints in the terminal before letting TeX resume execution, instead of having to open the log file only after the end of the compilation.  However, instances of \show... in the input file have the undesirable side-effect of raising "errors" (false alarms, really) when pdftex is called from within an IDE such as TeXmaker with option -interaction=nonstopmode. For example,  \show\centerline \bye   when compiled with pdftex -interaction=nonstopmode causes TeXmaker to report     Obviously, those false alarms prove really annoying when debugging. I always have to ask myself: Wait... are those errors due to instances of \show in my input file, or are they bona fide errors? On the other hand, my understanding is that you have to specify  -interaction=nonstopmode   if you want to call pdftex from within an IDE. Therefore, my question is:  Is there any way of preventing TeXmaker from reporting those "false alarms"?  Note: the problem I describe may be present in IDEs other than TeXmaker as well. If I reboot Ubuntu, then I need to log on each site and into Google Chrome account. What is the reason?  My system is Ubuntu 16.04 and Google Chrome 53.0.2785.101 (64-bit). Every partial order can be extended to a linear ordering What is the definition of how to count degrees of freedom? resulted, rather as by-product, the discussion on how to count degrees of freedom (DOF). I extend that question here:   Are necessary1 derivatives such as velocities counted as individual DOFs or together with the respective coordinate2? Should complex valued DOFs be counted twice as in "two real-valued DOFs" or once as in "one complex-valued DOF"? (I mean, when one does not want to specify this explicitly)   Please answer with some reference, unless it turns out this is actually a matter of taste rather than a strictly defined thing.    1) I mean those a value of which is required as an initial condition 2) I count fields in QFT as coordinates as well, while space-time-coordinates are parameters to me, if that matters. I know a field actually has $\infty$ (or rather, $2^\aleph$) DOFs itself, but let's say e.g. "one $\mathbb R^3$ continous DOF" in that case Possible Duplicate:          I'm looking for a good book on commutative algebra covering most of (but not limited to) :   Basic Galois theory and Module algebra Primary decomposition of ideals Zariski topology Nullstellensatz, Hauptidealsatz Noether's normalization Ring extensions "Going up" and "Going down"   The emphasis is on the approach, as I would like a book giving a good geometric intuition of ring theory that I could use as a solid basis to start learning algebraic geometry.  All in all, do you remember a book that gave you a deeper geometric insight of commutative algebra ? How do I avoid conversation with strangers while traveling? Suppose $\sum a_n$ converges absolutely and $\sum b_n$ converges. Give an example where the Cauchy product does not converge absolutely. Simplify $\sum (x_i- \mu)^2$ How can I simplify this relation? $$\sum_{i = 1}^m(X_i-\mu)^2=\sum_{i = 1}^m(X_i-\bar{X}_m)^2+m(\bar{X}_m-\mu)^2$$ I know how to set up: $$\sum_{i = 1}^m(X_i-\mu)^2=\sum_{i = 1}^m[(X_i-\bar{X}_m)+(\bar{X}_m-\mu)]^2$$ but when I open the bracket, how do I handle the mixed term? $$2\sum_{i = 1}^m(X_i-\bar{X}_m)(\bar{X}_m-\mu)$$  Thank you! I have fought the pumpkin moon and died like 3 times and made it to wave 7 or 6 whenever the pumpking first appears. I have full turtle armor and my primary melee weapon is a demon sickle. I also have the possessed hatchet, magnet sphere, and sniper rifle. I also have other gear like the Uzi. What should I replace, what should I take out, and what should I add? Thanks! Does a 2100W angle grinder need an earth pin? I have recently purchased a Makita 2100W angle grinder. It has just the live (L) and neutral (N) connectors unlike the one I previously used, which had a third protected earth (PE) connection.   Would it be better if I changed the connections to a 3 pin connector? A cyclic group is a group that is generated by a single element.  That means that there exists an element $g$, say, such that every other element of the group can be written as a power of $g$.  This element $g$ is the generator of the group.  Is that a correct explanation for what a cyclic group and a generator are? How can we find the generator of a cyclic group and how can we say how many generators should there be? I would like to take control of my app on an iOS device (mostly an iPhone) from my MacBook Pro or Windows, doesn't matter which one.  I know that it can be accomplished via Veency, and that's exactly what I need - but I do NOT want to jailbreak my iPhone.  Is there a similar legal alternative?  If not - is it something I could develop perhaps, or will I run into some SDK limitations for such a thing? Defaults to true.  If set to true replaces all instances of known swear words with replacements (comical or * based). If false renders the content as originally presented.  Benefits:    Reduces moderation requirements necessary to ensure that people behind corporate firewalls are not blocked by an errent swear word.   Stops idiots like me complaining about it. Shuffle an array with python, randomize array item order with python What's the easiest way to shuffle an array with python? Ways to put numbered balls in boxes no box being empty I know the formula for putting $n$ identical balls in $r$ different boxes such that each box has at least 1 ball, but what is the formula for putting $n$ different balls in $r$ different boxes, no box being empty?  Thanks!