Qualcomm Atheros QCA9565 / AR9565 keeps dropping connection
Ubuntu 18.04 No WiFi adapter found [Dell Inspiron 3542.]
What is Stack Overflow's deployment process? I'm looking for some insight into how Stack Overflow releases are deployed and managed.   What software/tooling is used? What time are releases generally performed? How many and what steps are involved?   I'm assuming it's not too stringent given the light team working on the codebase. But considering the high rate of change, I could see some kind of tooling and automation becoming increasingly relevant, so I'm curious to learn what kind of decisions are being made to deal with the changes in scale and feature set over time.  Is this information available somewhere? Usually in the morning I brush my teeth after breakfast. But my dentist told me that it's better not brush them right after eating food, because eating makes them soft.  So now I brush my teeth before breakfast. Is this the correct procedure?  PS. Just found , the author has the same opinion.  Just want to get a additional confirmation. What is the relation between the Higgs field and chirality? Wikipedia  that the spontaneous breaking of chiral symmetry "is responsible for the bulk of the mass (over 99%) of the nucleons".  How do the nucleons gain mass from the spontaneous breaking of chiral symmetry? Why don't leptons gains mass from it? What is the role of the Higgs field in this all? I'm pretty sure the answer to this should be obvious - even to me ...  It's been a while I've been reading and attempting to construct simple electronic circuits. The supply almost always is either through a battery/cell, or AC duly rectified to DC.   I have the impression electronic circuits rarely ever work off an AC supply.    Is this impression correct? If yes, why is an electronic circuit rarely (if ever) powered/biased using straight AC? Punctuations with relative pronouns Sogou is a Chinese search engine, which can search text, images, music and maps.  Is a comma required before "which" in the above sentence? Recommended visualization libraries for standalone applications How do you change the size of figure drawn with Matplotlib? What are the benefits to marking a field as `readonly` in C#? What are the benefits of having a member variable declared as read only?  Is it just protecting against someone changing its value during the lifecycle of the class or does using this keyword result in any speed or efficiency improvements? Adjective for someone who exaggerates emotions to get sympathy What's the word for someone who tries to get sympathy from others by exaggerating their emotions or constantly reminding them of something tragic that happened to them?  I'm looking for an adjective - no disorders or health related definitions please. How can I stream live video on YouTube? Nowadays, I see a lot of users live streaming on YouTube and wanted to try it for myself. However, when I go to my channel I don't see an option for live streaming.  I tried researching how to do this on YouTube and Google, but without luck.  So I was wondering, how can I live stream on YouTube?  I don't have any pro account or any of that, but I've watched livestreams from users who I don't think have pro accounts either.  So livestreaming is open for everyone, right? Custom command does not reference a label created with a previous custom command I would like my Dock to show only the windows of the current workspace. Especially in the little preview window. I find it very confusing to jump around workspaces when trying to find the right window. Navigation to section/subsection from Beamer headline titles Beamer infolines themes, like CambridgeUS, insert the titles of the current section and subsection in the headline. These titles appear to be clickable (the screen pointer changes as if they were so) but nothing happens when one clicks them.   Is there a way to link the headline titles to the first frame of the corresponding section or subsection? Something like this already works on the theme footline: clicking on the presentation title takes you to the title page.   Edit: MWE  \documentclass{beamer} \usetheme{CambridgeUS}  \setbeamertemplate{navigation symbols}{} \title{Click on Headline} \author{A.~U.~Thor} \institute{X-University} \date{2015} \begin{document} \begin{frame}   \titlepage \end{frame} \begin{frame}[t]{Contents}   \tableofcontents[subsectionstyle=hide]  \end{frame} \section{Section 1} \begin{frame}{Section 1}   \centering \Large Section 1 \end{frame} \begin{frame}[t]{Section 1: Contents}   \tableofcontents[currentsection,hideothersubsections] \end{frame} \subsection{Subsection 1.1} \begin{frame}{Frame 1.1.1}   A frame of subsection 1.1 \end{frame} \begin{frame}{Frame 1.1.2}   Another frame of subsection 1.1 \end{frame}   \subsection{Subsection 1.2} \begin{frame}{Frame 1.2.1}   A frame of subsection 1.2 \end{frame} \begin{frame}{Frame 1.2.2}   Another of subsection 1.2 \end{frame} \section{Section 2} \begin{frame}{Section 2}   \centering \Large Section 2 \end{frame} \begin{frame}[t]{Section 2: Contents}   \tableofcontents[currentsection,hideothersubsections] \end{frame} \subsection{Subsection 2.1} \begin{frame}{Frame 2.1.1}   A frame of subsection 2.1 \end{frame} \end{document} There seems to be some bug where mac os is constantly contacting . You can prevent it by turning off the wifi, but then your computer is nothing more than a fancy calculator. Is there a program, vpn, or even the firewall option, to block this site from the whole os? Some questions on abelian category Let  $f: C \longrightarrow D$ be a morphism in an abelian category $\mathfrak{A}$ with kernel and cokernel both zero. How can I show that it is an isomorphism? I am not able to find it's inverse.   Let $g: C \longrightarrow D$ be a morphism in the abelian category $\mathfrak{A}$. Let $i: K \hookrightarrow C$ be the kernel of $g$. How can I prove that the induced map $\text{coker}\ i \rightarrow D$ is a monic?   I don't want to use Mitchell's embedding theorem. skype 4.3 cannot connect to account on ubuntu 14.04 LTS I have being using Skype for a long time on my Ubuntu 14.04 LTS. From this morning on, Skype simple cannot connect to my account anymore.  That is my Skype version:     Skype 4.3.0.37   © 2014 Skype and/or Microsoft   My Ubuntu system:  LSB Version:    core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:printing-4.1-amd64:printing-4.1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch Distributor ID: Ubuntu Description:    Ubuntu 14.04.3 LTS Release:    14.04 Codename:   trusty   Any suggestion why or how to fix it?  Thanks in advance. fastest way to detect if a value is in a group of values in Javascript I have a group of strings in Javascript and I need to write a function that detects if another specific string belongs to this group or not.  What is the fastest way to achieve this? Is it alright to put the group of values into an array, and then write a function that searches through the array?  I think if I keep the values sorted and do a binary search, it should work fast enough. Or is there some other smart way of doing this, which can work faster? Turning off auto-maximizing of windows in 14.04 I know this has been asked for other Ubuntu releases, but the solutions posted are not working for me in 14.04. I've installed CCSM and turned off the grid option, but the windows still maximize when dragging to the top of the screen. I've dealt with it for a while but it's getting rather obnoxious. Anyone else had this problem and come across a solution?  EDIT:  This is happening in Gnome Classic, but not Gnome 3 How can I get bold math symbols? To make Latin-letter variables bold I can use e.g. \mathbf{a}, but while putting Greek letters or symbols such as \nabla inside \mathbf doesn't cause any errors or warnings, it also doesn't do anything else.  What is the best way to make bold math symbols, in particular Greek letters and \nabla? For regression problem, I have seen people use "coefficient of determination" (a.k.a R squared)  to perform model selection, e.g., finding the appropriate penalty coefficient for regularization.   However, it is also common to use "mean squared error" or "root mean squared error" as a measure of regression accuracy.  So what is the main difference between these two? Could they be used interchangeably for "regularization" and "regression" tasks?  And what are the main usage of each in practice, such as in machine learning, data mining tasks?