Questions specifically about Linux, as opposed to Unix-like systems in general, or to questions about a specific distribution or program.

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9
votes
0answers
223 views

Linux kernel dropping custom keyboard scan codes

I have a vintage IBM 122 key model M keyboard that I am adapting for use on a modern computer. I am using a Teensy 2.0 to do the encoding and to handle the USB side of things. I borrowed the firmware ...
8
votes
0answers
390 views

Why does hdparm see two different values for the size of a drive?

I have a 1 TB drive attached via USB. It contains an LVM physical volume filling the entire device (without any partition table). When I tried to extend a logical volume by using the entire PV, the ...
7
votes
0answers
714 views

How do I let an SDL app (not running as root) use the console

I want to use an SDL-based program to display graphics on the console, without having to log on from the console, and without running the program as root. For example, I want to be able to run it via ...
6
votes
0answers
210 views

cabal dies on NixOS in KVM

I set up a NixOS system on KVM and installed the haskelPlatform package. Everything works fine, ghci works fine, but cabal dies without any helpful error message: [michas@nix:~]$ type -a cabal cabal ...
6
votes
0answers
1k views

Mouse scroll wheel speed far too sensitive

In my crunchbang installation with X11, openbox, my wireless usb mouse is listed at both /dev/psaux and /dev/input/mouse0. It's working fine apart from the scroll wheel, which although active, is far ...
6
votes
0answers
511 views

'OS X-like' momentum scrolling in linux?

Is there a way to make the scrolling on a linux machine (running X11) more like OS X's natural scrolling? With 'natural scrolling' I mean the fact that you can flick trough the pages, there is ...
4
votes
0answers
73 views

Linux - mount command returns zero/0 but not working

Sounds strange, I have a shell script that it gets trigger by udev rules, to mount attached USB device to the system file tree. The script runs when an usb device attaches to system, so the rules ...
4
votes
0answers
106 views

Unexplained files found in home folder

For background information, I'm running openSUSE 13.2 and KDE 5. Today I found a number of unexplained files and folders in my home folder which state they've been edited 3 days ago. I do not ...
4
votes
0answers
37 views

Does managing cgroups require root access?

I am trying to work with control groups on two different operating systems (Ubuntu and Centos). There are few concerns that I would like to ask. I am trying to create a control group using the ...
4
votes
0answers
480 views

Understanding Broadcom setup and kernel files

I often install Linux distros form live usb/CDs. For that I would like to be able to setup my wireless without any internet connexion. I have a Broadcom chipset : $ lspci -k 04:00.0 Network ...
4
votes
0answers
252 views

Can inotify be used to watch for a specific file to be created without monitoring the entire directory?

I want to be notified when a specific filename is created. I'm looking at inotify. The IN_CREATE flag is available for monitoring a directory for any changes within it, but I'd prefer not to monitor ...
4
votes
0answers
193 views

Why is my swap not being activated automatically via fstab?

I've got a Linux embedded system that I'm experimenting with (the Elektor Embedded Linux Made Easy board, based on the GNUBLIN http://en.gnublin.org/index.php/GNUBLIN-Elektor). I'm using the 3.3 ...
4
votes
0answers
1k views

Graph is too large for cairo-renderer bitmaps Error

Im trying to use pyreverse to generate images of UML diagrams for a project source code. When I run the pyreverse command and specify to generate .png images, it runs and then after a while, it shows: ...
4
votes
0answers
40 views

Queuing disciplines are per-interface, what happen with interfaces using same device?

I have read about queuing disciplines here http://lartc.org/. I understand that for instance band 0 of pfifo policy is prioritized over band 2 within same qdisc, but what happen when i have ppp0 and ...
4
votes
0answers
588 views

Are there any tools to test MTD/JFFS2 for Linux 2.4 kernels

I have some issues with a platform I support and I suspect memory problems. I wanted to check the Flash parts using some MTD JFFS2 test tools, I found a link to a bunch on this site. However they ...
4
votes
0answers
325 views

Screen flickers in Fedora 17

Screen flickers every 10 seconds. (I timed with a stopwatch, screen flickers every 10 seconds, 6 times a minute exactly.) I've used Windows and I'm trying to use Linux. I don't know much about Linux. ...
4
votes
0answers
2k views

How do I find out the device node corresponding to my device in SuSE 8?

I'm forced to work with a bunch of point-of-sale systems running SuSE 8. They are my client's computers. We are stuck dealing with these old systems until they get to upgrade their whole fleet to SLE ...
4
votes
0answers
618 views

How to set up an encrypted directory to be mounted only during samba access?

(This is not about restricting client access, for which ext3 permissions do the trick) I'd like to encrypt the data on my NAS drive (Buffalo LinkStation Pro with SSH access enabled, if that matters) ...
4
votes
0answers
401 views

Setting Framebuffer splash resolution when exiting X

I installed a copy of BackTrack 5 R2 (Ubuntu 10.04) to my HDD and dual-booted with Windows 7. After a bit of tweaking I set about updating the native Intel drivers because it was only allowing me to ...
4
votes
0answers
139 views

Restricting sound control

I need to restrict users so that they cannot output sound from built-in speakers. They should plug their headphones to hear any sound. They should be able to control headphone volume level, but not ...
4
votes
0answers
1k views

Automounting not working correctly for CIFS shares; weird results

I followed the guide on this page to get samba shares working via autofs: http://www.howtoforge.com/accessing_windows_or_samba_shares_using_autofs Servers and Configuration My Samba server (remote) ...
4
votes
0answers
222 views

fsarchiver error

I'm running the following fsarchiver command: $ fsarchiver restfs /tmp/backup/c0d0p2.fsa id=0,dest=/dev/cciss/c0d0p2 I get the following error: [errno=22, Invalid argument]: ...
3
votes
0answers
20 views

Cannot use keyboard within Qt app without sudo

I have an embedded Qt application crosscompiled that runs on BeagleBone Black. It works Ok, but one thing- It doesnt accept keyboard input if i wont run in directly on BeagleBone Black preceeding with ...
3
votes
0answers
14 views

Cocoa API implementation for Linux?

Is there any Wine-like project for running OS X apps on Linux? I mean an implementation of Cocoa API for standard Linux machine, as it is done with Wine.
3
votes
0answers
39 views

Linux Routing Question

I was wondering how it would be possible to have multiple IPv6 default gateways on CentOS linux. I currently have two interfaces with IPv6 (venet0 and tb0), both with different blocks routed to them. ...
3
votes
0answers
43 views

Linux Angstrom can't start without serial cable plugged

I'm using the Altera Cyclone V Soc dev Kit and Linux Angstrom provides by rocketboards (http://rocketboards.org/foswiki/Documentation/GSRD141) Kernel is : 3.10 LTSI Linux can't start if any serial ...
3
votes
0answers
108 views

Is it possible to throttle upload bandwidth per `IP` basis using `tc`, `htb` and `iptables` ? (Download limitation not required)

Problem I've searched internet like anything but couldn't find much about limiting upload. The solutions given are not limiting IP basis like this one but LAN as a whole. +-----+ ...
3
votes
0answers
39 views

Expanding root partition CentOS 6 With using fdisk

I am trying to expand the root partition on a VM which is not using LVM and I do not have (nor want to try and create then use) a disk to boot from. As such I followed what I felt was the logical ...
3
votes
0answers
9 views

Is posix_fadvice / POSIX_FADV_DONTNEED functional in Linux?

If I am doing once only scanning across big files then do I need to worry about impact on the page cache or does the OS take care to avoid my scan causing pointless churn in the page cache. I want to ...
3
votes
0answers
13 views

Radiusd(freeradius): User only for a special client

Is it possible to restrict a user from the "users" file to a special client? I try to use one radiusd server for two wifi access points but I will use one user credentials only for one access point ...
3
votes
0answers
57 views

Best practice to customize date/time format system-wide?

I'd like to customize exclusively the date and time format for my system, while sticking to the rest of the locale as is. I know that environment variable LC_TIME will make it possible to customize ...
3
votes
0answers
46 views

Limit the inode cache used by a command

I want to run a task with limits on the kernel objects that they will indirectly trigger. Note that this is not about the memory, threads, etc. used by the application, but about memory used by the ...
3
votes
0answers
61 views

Scripted write-then-read from Unix domain socket using socat

I have a simple server listening on a Unix domain socket (on a CentOS box in case that's important). When I send the command "DATE" to the socket it writes back a welcome message and then "APRIL 15 ...
3
votes
0answers
42 views

Automatically restarting process in the X server

I would like to know how to have a process that starts with the X server and automatically restarts when it stops running. I am running Ubuntu 14.04 with a KDE 4.13.3 desktop. I am running the ...
3
votes
0answers
55 views

How to generate graphs from lmbench results?

I need to use the lmbench benchmarking tool to get the system performance statistics. I am able to execute and run the results. In the results folder this is a MakeFile with this information # ...
3
votes
0answers
36 views

Is there a thing like “veth”, but without link-level headers?

When I use separate network namespace, I often set up networking there using veth: ip link add type veth ip link set veth0 netns 1 ifconfig veth1 192.168.60.2 ip route add default via 192.168.60.1 ...
3
votes
0answers
94 views

Does ZFS for Linux over stress VirtualBox?

I've been using MD raid + LVM for many years, but recently decided to take a look at ZFS. In order to try it, I created a VirtualBox VM with a similar layout to my main server - 7 'SATA' drives or ...
3
votes
0answers
65 views

What is the difference between “systemctl restart” and “systemctl start”?

I have two services A and B where B is dependent on A which means in the A's service unit i have After and Requires set to B After=B.service Requires=B.service Now when i stop the service B the ...
3
votes
0answers
84 views

Set maximum volume in Arch Linux

Recently, I purchased new over-ear headphones that have some really powerful speakers. I usually have to listen at ~4% volume to use them comfortably. Each time I restart my computer, they move back ...
3
votes
0answers
156 views

Multiple wget calls in a single session?

I have the following code to retrieve a page from a website that needs authentication (it uses Sungard Higher Education authentication): wget --delete-after --save-cookies cookies.txt ...
3
votes
0answers
133 views

Does Samba 4 actually respect Unix file acls?

After researching the subject on the internet I drew a conclusion that Samba should take into account Unix file acls. During my tests I found the opposite. Only Unix file mode bits are respected, and ...
3
votes
0answers
70 views

Discover what is cached by dm-cache

I am using dm-cache successfully for quite a while now. Now I would like to know which files are being currently in the cache. I understand that dm-cache works with blocks, not files, but since there ...
3
votes
0answers
62 views

Can't connect to some WiFis, Linux on Macbook Pro

I just recently installed Fedora 20 on my Macbook, with MATE desktop. Everything is fine at home (WiFi WPA2, connects without any issues whatsoever). Today is my first day back at Uni with the new ...
3
votes
0answers
76 views

Bad/strange USB device issue: failed to shutdown/restart

On a fresh Arch Linux installation with Intel i7 processor and an Nvidia graphics card, I noticed during boot log messages related to a usb device filled the screen before it reached the graphical ...
3
votes
0answers
285 views

How can I properly QoS streaming services on OpenWRT

I'm going to start by explaining my naivete, I'm not sure, if netflix via a web browser uses the same protocol (http?) as netflix via a smart tv, for example. I'm using OpenWRT 14.07 currently, and am ...
3
votes
0answers
114 views

Replicate a complex partition structure with LUKS and LVM volumes

I have two external hard discs on an OpenSUSE 13.1 system. On one I have created a partition structure: An encrypted LVM partition (LUKS) Several volumes (10) on this LVM partition, some formatted ...
3
votes
0answers
85 views

Does Linux provide Predictive Self-Healing on x86?

Predictive Self Healing is a feature of the OS to predict, detect a fault with one of its components and automatically repair it. MINIX, Solaris OS and Linux on POWER all have this. But is it ...
3
votes
0answers
2k views

Kali Linux USB Live Boot Not Working

I downloaded the Kali Linux ISO 64-bit off of this page: http://www.kali.org/downloads Then, I used the Kali Linux Live USB Install Procedure on this page for Windows. I boot my computer from my ...
3
votes
0answers
82 views

Disable USB drive from sleeping

I am loading fedora20 directly from a SATA drive connected via USB. The problem is that I will be working and all of a sudden the drive seems to have been put to sleep and nothing will work except ...
3
votes
0answers
46 views

How Does X build its modelist?

I have an embedded board running Linux 3.0.35 and X.Org 1.14.4. I'm modifying an existing framebuffer driver to support a new connector type. I'm reading the EDID, creating a new modelist using the ...