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Unanswered Questions

14,979 questions with no upvoted or accepted answers
15
votes
1answer
5k views

Setting up a Bluetooth PAN

I am trying to create a Bluetooth PAN between two devices where I can access REST based web services over the Bluetooth connection. I have had some success with various proof of concepts (both ...
15
votes
2answers
6k views

How to get rEFInd working with FileVault 2 on OSX 10.8

I installed rEFInd on my new Macbook Air which I planned on using to do a dual boot to Linux, but prior to installing Linux, I decided to encrypt my drive. I knew I was going to do this, so I had ...
13
votes
4answers
1k views

Headphones not reproducing bass under GNOME

I have a 2012 Retina MacBook Pro running Arch Linux with GNOME. Normally, I listen to music using the analog audio I/O interface -- the 3.5mm socket. Recently, I had to attach a USB microphone to the ...
9
votes
0answers
518 views

Trap on DEBUG signal for the dash shell?

With the bash shell, you can install a trap on the synthetic DEBUG signal. This is useful and will execute your function or bit of code on every shell command. For example: $ trap 'logger -t shell "${...
9
votes
1answer
134 views

Echo asterisks/passphrase as it's being typed in gnupg with tty pinentry

I'm using gnupg with tty pinentry agent to encrypt a file with a symmetric passphrase. When I'm typing it, both to encrypt and decrypt the file, gnupg's tty pinentry avoid displaying the characters I'...
9
votes
1answer
5k views

Sierra Wireless AirCard 313U (AT&T Momentum 4G) on Ubuntu Linux

I'm trying to get a Sierra Wireless AirCard 313U (more specifically, the AT&T Momentum 4G) working under Ubuntu Linux. I've looked at a number of pages so far: How to connect internet using AT&...
8
votes
0answers
1k views

Hibernation without swap enabled

My laptop has plenty of RAM and a SSD. To not wear out the SSD, I do not want to have swap be used ever. If a process ever uses so much RAM that it has to start using swap, then it clearly is ...
8
votes
1answer
2k views

How to set default display for new windows in Gnome 3

I have 2 displays, a monitor and a TV. The first one I use all the time and it has set as primary in Gnome settings, but a TV is turned on only when watching movies from a sofa. Mainly, everything is ...
8
votes
1answer
3k views

What is the difference between DESKTOP_SESSION, XDG_SESSION_DESKTOP, and XDG_CURRENT_DESKTOP?

I want to detect which desktop manager I am running, and I found out that there are three environment variables, DESKTOP_SESSION , XDG_SESSION_DESKTOP , and XDG_CURRENT_DESKTOP which could help me do ...
8
votes
0answers
9k views

“Missing LSB tags and overrides” error on /etc/init.d script

I made a script as showed in this tutorial: http://edv-huber.com/index.php/problemloesungen/15-custom-splash-screen-for-raspberry-pi-raspbian But after executing a command: insserv /etc/init.d/...
8
votes
0answers
1k views

How do I install Nix on a custom directory?

I have been trying to follow the Nix wiki to install Nix on a custom path /scratch/gopinath/nix. The /nix path is not accessible to me due to the restrictions on the system provided by my university. ...
8
votes
1answer
495 views

Attach to the same tmux session from different nodes of a cluster

I'm working on a computing cluster which has several hundreds of nodes. A load-balancing scheme picks an idle node to login to when ssh-ing into the cluster. As a result, it is very unlikely to re-...
8
votes
1answer
1k views

Problems with tmux, mutt, and terminal colors

If I start mutt in a tmux session like this: $ tmux new-session -s mutt mutt Mutt complains: Error in /home/lars/.mutt/colors, line 20: 230: color not supported by term Error in /home/lars/.mutt/...
8
votes
0answers
2k views

How to know which file or inode triggered a systemd.path unit?

Systemd offers unit files whom control monitoring of a certain path trough inotify: systemd.path(5). If a file or directory is modified in the watched path the corresponding systemd.service(5) is ...
8
votes
0answers
409 views

How to interpret state and log files written by preload program in Linux?

Preload is a program which prefetches files from the disk needed by various applications to reduce application startup time. It seems to be very popular and useful (just google preload+linux) but the ...

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