These questions are about Linux in general -- NOT specific to a particular distribution. If the question just happens to be in a Linux environment, please specify your Linux distribution in the body of your question, but do NOT use the /linux tag.

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3
votes
0answers
334 views

Increasing serial baud rate within Ubuntu under VirtualBox

I'm debugging a kernel module under VirtualBox with a guest and host OS as Ubuntu 10.10. I'm using the virtualbox serial port but I'm maxing out at the baudrate 115200. My grub config looks like this.....
3
votes
0answers
1k views

Keyboard repeat without pressing a key

Occasionally a key repeats although I do not press the key. I would like to prevent this phenomenon. The phenomenon happens when I am pressing Ctrl+w again and again. After several times of Ctrl+w, w ...
3
votes
0answers
519 views

New Mail Arrived notification Kmail + Jovie Speech customizing

When a new message arrives, Kmail has ability to speak! Which is great but not enough: I don't want to listen to a standard text but have a proper functionality: When a new message arrives, Jovie ...
2
votes
0answers
52 views

Can't figure out why Ethernet packets are ignored

I'm trying to setup an ethernet connection between a PC (Windows XP) and a notebook (Debian 9) using a crossover cable. No DHCP, just manually set IPs and a netmask. The notebook has Qualcomm Atheros ...
2
votes
0answers
44 views

Less RAM Aailable than installed on Centos 7

I can't seem to figure out why do I have less RAM usable than installed. I am running 64bit Centos 7 with 1 RAM module of 4096MB on a Lenovo x230. Some information from the machine in question: $ ...
2
votes
0answers
63 views

Fedora: Touchscreen works in live mode, but not after install

Recently I've been playing with Linux on Thinkpad 10 2nd gen tablet. Currently Fedora is running on it. When I boot from USB stick (live mode), touchscreen works and is detected as Wacom 5020 HID, but ...
2
votes
0answers
28 views

Enable tty console login while “A stop job is running” (stop running forever, preventing shutdown)

A message like this one is often shown on shutdown: "A stop job is running ..." (nfs mount) This apparently even happens when the NFS server did not go away. But even if the connection to the NFS ...
2
votes
0answers
28 views

How to renice all threads and child processes on Linux?

Linux does not follow the POSIX.1 standard which says that a renice on a process affects "all system scope threads in the process", because according to the pthreads(7) doc "threads do not share a ...
2
votes
0answers
39 views

Ethernet to USB adapter is not initialized as ttyUSB or ttyACM device

When I plug a Ethernet-to-USB adapter to my Ubuntu 14.04 on the USB port. I can see the Ubuntu has an extra ethernet device. However, I want to see /dev/ttyACM* type of device. I'm wondering why the ...
2
votes
0answers
17 views

startx not starting when you want to write its log

I have set up a very minimal linux. No desktop environment just window manager. I used i3 as window manager and set up X to start it; upon login I want startx to run so I added this code on ....
2
votes
0answers
25 views

How to Reflash Toshiba Satellite L855-10P BIOS in a Linux Distro?

Hi I need to Reflash the BIOS of my Toshiba Satellite L855-10P using a Linux distro. How can one do this? I have found lots of info on how to read the BIOS (windows & Linux), dump memory from it ...
2
votes
0answers
27 views

How to identify what capabilities are required for a command?

When I run a command within a docker container, I see: # ip netns exec 9ee961d90990 ifconfig setting the network namespace "9ee961d90990" failed: Operation not permitted I can launch my container ...
2
votes
0answers
41 views

Mount point for specific USB port

I have a USB hub connected to my laptop, always through the same port - my question is how can I make my linux installation always mount whatever is plugged into one of the specific ports on this hub ...
2
votes
0answers
98 views

“-bash: /root/.bashrc: Permission denied” when logging in

I have this server running Centos 7. Every time I log in (remotely or locally) with every user I get an error. If I log in as root I get -bash: /root/.bashrc: Permission denied If I log in as a ...
2
votes
0answers
35 views

Make bootable disk from tar archive

I have a compressed tar archive from a SLES 11 root directory. I'd like to boot another machine with a live linux, extract my OS archive on a disk, and make the disk bootable. Is there any easy way to ...
2
votes
0answers
43 views

GNU/Linux OOM (out of memory) freezes - solution ideas

Explanation While working with older machine with swap on and 2 GB ram, I frequently encounter behaviour well described as freeze: here, what is the best way to prevent out of memory oom freezes on ...
2
votes
0answers
228 views

MIME type changes if file edited in *nix systems

I have an excel file created in Windows machine. If I check MIME type with file -b --mime users.xlsx the result is application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; charset=binary ...
2
votes
0answers
41 views

Why XInput can't work in X-terminal?

I am trying to show keyboard event by app xinput. I tried on three workstations. On the first two workstations (in local X-session), all is good: Get device list: $ xinput ⎡ Virtual core pointer id=...
2
votes
0answers
27 views

Wi-Fi disconnecting after a few minutes

I'm using an old Thinkpad R32 that I found and I installed Debian 8 with LXDE. I'm using a Wi-Fi dongle which is the RTL8191SU. I installed it using firmware-linux-nonfree and firmware-realtek. It ...
2
votes
0answers
120 views

Linux - couldn't mount RDWR because of unsupported optional features (400)

I try to run Android from SD-card. This card is prepared. There are partitions: boot(FAT32), rootfs(ext4), system(ext4), cache(ext4) and usedata(ext4). Boot partitions has files to run u-boot: MLO, u-...
2
votes
0answers
14 views

How can I clone a specific work space to other outputs?

I am using i3-wm with Archlinux, and I nowadays are wandering that: is it possible to clone a specific work space to another output(monitor)? It is different from --same-as as well as --left-of --...
2
votes
0answers
34 views

Is this possible to use a different rootfs that the one kernel comes with?

Here's the situation: I have a compiled zImage that comes with its own rootfs that contains linuxrc. I can extract it using this script. I would like to modify some startup scripts that are part of ...
2
votes
0answers
110 views

GPU pass-through KVM Fedora 23

I am attempting to pass a GPU to a windows 10 VM running on a Fedora 23 host: Virt-manager Host: Fedora 23 Guest: Windows 10 64 bit guest UEFI OVMF GPU: R7 AMD Radon 250 is the GPU that I am ...
2
votes
0answers
60 views

How do Linux kernel modules get enabled in a Linux distro's kernel package?

Although I know how to recompile my kernel to enable a module I want, I'm curious to know how the default Linux kernel modules are chosen in a Linux distribution's kernel package. Taking a comparison ...
2
votes
0answers
39 views

External Fragmentation in FreeBSD due to unmovable Kernel pages

Is external fragmentation an issue in FreeBSD due to unmovable Kernel pages similar to what Linux (1) (2) faces?
2
votes
0answers
55 views

Sort mount points by mount time

With no command line arguments mount displays all mounted file systems, e.g.: /dev/sdy8 on /bar type ext4 (rw,relatime,lazytime,data=ordered) /dev/sdx6 on /baz type ext4 (rw,relatime,lazytime,errors=...
2
votes
0answers
46 views

How to remove all old kernels except the two latest

The following command deletes all kernels except the latest: package-cleanup --oldkernels --count=1 Does the following command delete all but the two latest kernels? package-cleanup --...
2
votes
0answers
47 views

How to get the executed command of a process which has completed successfully using the PID?

I have small script, abc.ksh that takes 3 parameter e.g abc.ksh ${a} ${b} ${c} I will read from a config file with 'n' no of entires and I will execute abc.ksh 'n' times in parallel using a for loop. ...
2
votes
0answers
32 views

Low-res GUI for Linux on a RaspberryPi used as a mobile device

I want to build a custom mobile device using a RaspberryPi or BananaPi and a touchscreen (resolution 320x240). Is there GUI for Linux that's made to work well on such low resolutions (preferably ...
2
votes
0answers
14 views

Linux startup script dependency issue

I have a startup script in init.d that starts some process that depends on Redis server running. When init script executes on boot my process fails due to connection failure to Redis server. I have ...
2
votes
0answers
42 views

How to assign different configuration for ttyS0 under different environments

I have a computer (let's call it as DevPC) that sometimes run Linux in native environment and that sometimes run Linux on Xen. I connect this computer to another computer (let's call it as MonitorPC) ...
2
votes
0answers
174 views

munin phpfpm plugin

I have setup PHP-FPM plugin All graphs works except three PHP5-FPM Average Process Size PHP5-FPM Memory Usage PHP5-FPM Processes setup /etc/munin/plugin-conf.d/munin-node [phpfpm_*] env.url ...
2
votes
0answers
72 views

Can not start wifi with systemd

With command netctl start wlp3s0-tian got error. Apr 29 18:28:57 ArchPad systemd[1]: Starting Networking for netctl profile wlp3s0-tian... Apr 29 18:28:57 ArchPad network[1019]: Starting network ...
2
votes
0answers
22 views

what is difference between .deb pakage file and ddeb pakage file in linux

I need to install SystemTap in Ubuntu 14 and i would need to install debug symbols for kernel i encountered ddeb file how i could uninstall this file after installation ? i got ERROR: Build-id ...
2
votes
0answers
52 views

Can not seem to get the jp2 delegate to work in ImageMagick on Ubuntu 15.10

As the title says, I have tried to install the library on both 14.04 and 15.10. Every time I type in convert -version the delegates do not contain jp2000. I have installed libopenjpeg-dev and libjpeg-...
2
votes
0answers
57 views

Why would all our CLOSE_WAIT connections have 24 bytes in the receive queue?

We have an Apache reverse proxy that is having connectivity issues with the back-end. This results in timeout errors such as this: [Thu Apr 21 12:12:26.031207 2016] [proxy_http:error] [pid 64620:tid ...
2
votes
0answers
49 views

How to support 64-bit times on a 32-bit Linux platform

I need to support 64-bit times on a 32-bit ARM embedded Linux system based on kernel version 4.1. I use clock_gettime() and clock_settime() to get/set the time, but they are limited to 32-bit seconds ...
2
votes
0answers
54 views

Samba unable to write when mounting from linux

I'm having some weird issues with samba. Somehow im not able to write to the mounted share from Linux over VPN but it works without problems when mounting from Windows hosts on the same local network. ...
2
votes
0answers
38 views

Internal speaker unmuted when I press volume up/down buttons on my headphones

It is logical to expect the volume up/down buttons on my USB headphones to only control the volume of the headphones, but in fact they also unmute all other audio output devices. I'm using KDE on ...
2
votes
0answers
39 views

Running R scripts on a Linux cluster

I have access to an IBM IDataplex Cluster with CentOS v.6.2. If I want to run the following R script on R: library(data.table) library(mgcv) library(reshape2) library(dplyr) library(tidyr) library(...
2
votes
0answers
116 views

Configuring and Testing Freeradius on debian

I'm trying to set up a freeradius server on debian (LTS kernel 3.2.0.4amd64; Wheezy 7.10) it seems to want to use freeradius version 2.1.12 Installing the package wasn't a big deal (apt-get install ...
2
votes
0answers
66 views

Linux usb-drive write cache

Is there any way to change the way the Linux kernel handles external storage and the external storage cache? Every time I copy something to it, the copy process seen from userspace seems really fast. ...
2
votes
0answers
38 views

OOM Killer: Processes have a score of over a 1000

All top links when Googling for OOM score seem to indicate that the values must be between -1000 and 1000. I tried to verify that with a simple cat /proc/*/oom_score | sort -n | less and I ...
2
votes
0answers
21 views

Cannot create 16-bit LDT segments on kernel 3.8.11

Running Crossover, I get the warning, Your system does not allow creation of 16-bit LDT segments. I am aware that this was a problem around kernel 3.1.x, but I am on 3.8.11. Also, the fix suggested in ...
2
votes
0answers
52 views

How would I limit users' sudo permissions for journalctl to a specific unit?

I want to provide our users access to journalctl of a specific unit. For e.g., httpd. My initial thought was to specify the command spec like this: /usr/bin/journalctl -u httpd.service * This will ...
2
votes
0answers
123 views

Dual-monitor problem NVIDIA, screens flickering (turning on/off)

I switched to NVIDIA drivers in Linux Mint 17.3 Cinnamon via Driver Manager in order to be able to play games. I am on NVIDIA 750M. The problem is, when I try to connect the second screen via ...
2
votes
0answers
157 views

Netlink access inside a network namespace

I'm trying set up an IPsec gateway (strongSwan) on a Raspberry Pi 2. The Pi was already providing a number of services on the LAN using a private IP address. My initial attempt to turn it into an ...
2
votes
0answers
59 views

Safely remove USB Drive (Kindle) from command line

I am trying to safely remove my Kindle from the command line but, so far, all my attempts have left the Kindle in "USB Drive Mode". This is not the case when I have safely removed the Kindle via the ...
2
votes
0answers
31 views

Is there a way to control the battery charging port of a laptop?

So here's the idea, i want to be able to control this so as to keep the battery wear level to a minimum. At >25% , the battery will be in discharge 'mode' and as the battery reaches <25%, I will ...
2
votes
0answers
32 views

Active Directory UID Mapping to Specific Unix UIDs

I need a bit of help here. I'm a junior systems admin who's sort of been thrown into the deep end with everything! I really don't understand the translation of Active Directory UIDs Mapping to Unix ...