Alsamixer returns "cannot open mixer: No such file or directory"
alsamixer returns: cannot open mixer: No such file or directory after sudo apt install jack sudo lspci -v | grep -i audio returns 00:1b.0 Audio device: In...
04 Apr 2026 1 READS
Fibocom L850-GL installation on Ubuntu 18.04
I have a new gen 6 X1 carbon with a 4G connection. But, unfortunately, I could not install it in Ubuntu 18.04. I appreciate if anybody can help to install...
04 Apr 2026 1 READS
Ctrl+C does not quit a running program in terminal
Ok, I don't know why, but I've seen this question been asked many times, but none of the answers seem to be helpful, yet the problem is quite ob...
04 Apr 2026 1 READS
![Android emulator for Ubuntu? [duplicate]](https://edu.smbbmcl.edu.pk/uploads/android-emulator-for-ubuntu-duplicate_720.jpg)
Android emulator for Ubuntu? [duplicate]
I don't know much more about Ubuntu yet, I am looking for android emulator for my Ubuntu14. If any there could you please let me know (with download ...
04 Apr 2026 1 READS
Computing limit of $(1+1/n)^{n^2}$
How can I compute the limit $\lim_{n\rightarrow\infty}\left(1+\frac{1}{n}\right)^{n^2}$? Of course $\lim_{n\rightarrow\infty}\left(1+\frac{1}{n}\right)^{n...
04 Apr 2026 1 READS
Ubuntu 18.04.3 - when trying to uninstall mongodb says that it doesn't exist, when trying to install says it exists
I have been working on this and read a lot of articles. I am trying to get this working on my test server hosted by digital ocean. for some reason, out of...
04 Apr 2026 1 READS
Why two vectors cannot span ${\bf R}^3$?
Consider two vectors $$ u_{1} = \begin{bmatrix} -1 \\ 3 \\ 2 \\ \end{bmatrix},\quad u_{2} = \begin{bmatrix} 6 \\ 1 \\ 1 \\ \end{bmatrix} $$ I can tell the...
04 Apr 2026 1 READS
Logrotate is deleting my logs
I have this logrotate config which is not in /etc/logrotate.d /path/to/my/logfile.log { su root root daily maxage 365000 copytruncate dateext dateformat -...
04 Apr 2026 0 READS
Why is it important for a matrix to be square?
I am currently trying to self-study linear algebra. I've noticed that a lot of the definitions for terms (like eigenvectors, characteristic polynomia...
04 Apr 2026 0 READS
Gay Speed Dating Problem
Here's an interesting problem that I came up with the other night. With straight speed dating, (assuming the number of men and women are equal) the n...
04 Apr 2026 0 READS
