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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7
votes
1answer
313 views

How to make linux 'perf record' work for libc and libstdc++ symbols?

I'm using perf record -g on x86-64 Linux to profile a program. Several symbols in libc or libstdc++ have 0 as a parent: __GI___strcmp_ssse3 (libc) and strcmp@plt (libstdc++) for example. (I can ...
6
votes
1answer
9k views

Changing screen resolution/geometry of a vncserver without randr in Linux

I want to change the resolution / geometry of my VNC session dynamically without affecting the programs running inside it. I referred: Changing the resolution of a VNC session in linux. I don't have ...
5
votes
1answer
88 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 ...
5
votes
1answer
245 views

How to use an SSD for caching, so my hard disks can spin down?

I've got a file server with a bunch of disks running together in a BTRFS pool and want to add an SSD for caching. I'm not mainly after speeding up things, but want to catch the regular small accesses ...
5
votes
1answer
464 views

SquashFS image as rootfs in LXC

Is it possible to use a SquashFS filesystem as an LXC rootfs? I can mount an ext3 image as a rootfs just by setting lxc.rootfs to the filename, but if it's any other type of image, lxc-start just says ...
5
votes
1answer
989 views

What is SSTP vpn server and how can I run one?

I've read a couple of L2TP and PPTP tutorials on the net and there are just dozens of "running PPTP/L2TP on Linux" guides available out there and I successfully made packages like open-swan or pptpd ...
5
votes
1answer
1k views

Eye-FI SD Card not working with inbuilt card reader

I am tring to get my cardreader to work with and eye-fi SD card. My System is as follow: #uname -a Linux computer 3.2.0-0.bpo.2-amd64 #1 SMP Thu Mar 15 20:46:44 UTC 2012 x86_64 GNU/Linux Debian ...
4
votes
1answer
111 views

ZFS: Trying to remove top-level drive from Zpool

I have a zpool called storage that contains a five device raidz1 array. Today I went and bought another 3TB device and put it in my enclosure. However, instead of creating a new pool and adding that ...
4
votes
1answer
303 views

lshw lists my drive but it has no /dev file

Ive just got a dedicated server which has 2x 1TB HDD. However when I type df -h I get the following: [root@sd-56537 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 916G ...
4
votes
1answer
347 views

Windows Changes File Permissions in Samba File Shares

I have mounted an external USB drive that is used for file shares on CentOS. All of the clients access the shares are Windows XP or 7. Within Windows, I use the "Manage your credentials" feature in ...
4
votes
1answer
957 views

One host, two virtual machines that cannot ping each other. How to solve

We have Virtual Machines operating within the KVM environment. We setup one as a dev server running Apache etc., and the other as a Windows development environment. The two environments are setup ...
4
votes
1answer
288 views

Spike in swap utilisation without high swap rate

Every Saturday, for reasons unknown to me, one of my servers experiences a spike in swap utilisation. It's not necessarily a problem as there is plenty of free memory available, but I'd still like to ...
4
votes
1answer
995 views

Arch: Awesome Window Manager won't start

I can't get my awesome running. I installed awesome and all dependecies with pacman and followed the beginning of the following guide to get awesome running: ...
4
votes
1answer
85 views

Why doesn't the Linux vfat driver allow certain characters?

The Linux vfat driver seems to disallow certain characters in vfat long file names: ?<>\:*|". I understand that Windows doesn't support these characters, but Wikipedia seems to indicate that the ...
4
votes
1answer
99 views

Tomoyo Linux: Have a private folder, that can't be read by default

Is it possible to specify folders, eg: /home/$user/private that can not be listed, read or written to by any application in the default profile 0, but only with programs where I specify this as ...
4
votes
1answer
171 views

Why Nmap fragmented scan on Linux is only working from virtual environment?

OLD QUESTION AND TITLE (Look further down for the updated question): Why Nmap fragmented scan is only working on Backtrack? I spent quite a few hours today trying to capture and study some ...
4
votes
1answer
341 views

Is there a Linux for an MSM7227 tablet with USB keyboard and touchscreen stylus drivers?

I have a ZTE V9C 7" tablet with 800MHz MSM7227 processor, Snapdragon family (ARM architecture?), Android 2.3, and I want to have a (very lightweight) Linux running on it (I know Android uses a Linux ...
4
votes
1answer
343 views

Using source routing (LSRR) - any ideas?

What I want to do is conceptually very simple, but I can't find any information or help about how to go about doing this. Basically, I want to configure my networking to use source routing (LSRR). ...
4
votes
1answer
412 views

Gentoo Live CD from Hard Drive: No Mountable Filesystems on root after modules loaded

I am attempting to install Gentoo on my PowerPC Mac. I have reached the point where I can boot the Live CD (I have no functional CD Drive, so it is from a spare Hard Drive), but after the kernel is ...
4
votes
1answer
2k views

What options are there for tuning Linux file system caching?

What various types of caching are possible in the ext3 file system and how can their values be changed using system calls or other methods? I don't want to use commands or tools.
3
votes
1answer
135 views

Start QT Application on bootup on an Embedded Linux Device (Beaglebone Black)

Below is picture of the display on bootup. Expected display is overwritten by Angstrom screen Expected Display Application is been started as a service. Below is the content of the service file ...
0
votes
0answers
418 views

running matlab command line in screen — can't type after reattaching

I'm logging in via ssh to a more powerful computer, on this I start a screen session with screen -S mine and then open a matlab command line via matlab -nodesktop -nodplash and then run within matlab ...
0
votes
0answers
634 views

Unable to open EPS files

I am unable to open eps files in my machine. I have attached the screenshots of what happens when try to view a eps file with default pdf viewer and ghost script viewer (gv). The condition is same ...
0
votes
0answers
39 views

Frozen Linux Recovery Without SysReq

RHEL system has run out of memory and is now frozen. The SysReq commands are not working, so I am not even sure that /proc/sys/kernel/sysrq is set to 1. Is there any other "safe" way I can reboot ...
0
votes
0answers
29 views

Video Gibberish (once every week or two)

Trying to track down an odd video problem. I was running Ubuntu (Precise Penguin) before and running Lucid before that. In both cases the video was running fine (over the last two years). However ...
0
votes
0answers
59 views

RedHat server packages are never found

I set up a virtual server Red Hat machine but every time I try to use the "yum" command to install new packages, the command works properly but it is never been able to find any package even the ...
0
votes
0answers
195 views

Limit internet speed without tc

I'm using deb based linux for years and I never had problems limiting the internet speed using wondershaper. The problem is that on sisters PC I had to install puppy linux because it's a very old PC. ...
0
votes
0answers
41 views

HD Video Sticks

I have HD video, which I play through browser. Whenever I try to play it with "low quality" and "medium quality", the video plays smoothly. But when I select "High quality", the same video sticks ...
0
votes
0answers
237 views

Install opengl driver on RHEL5.7

A user is using a software called "HyperLynx - LineSim" to plot a graph. When he wants to view the graph, there's this error "Failed to run PowerScope: OpenGL is not installed". The machine is ...
0
votes
0answers
3k views

SVN error message: “E200030: sqlite: database disk image is malformed” on checkout

The .svn folder doesn't exist yet. I tried deleting it after it was created, but I get the same issue again @:/var/www/htdocs$ svn checkout https://host/svn/trunk/ . svn: E200030: sqlite: database ...
0
votes
0answers
3k views

Install Broadcom wifi adapter driver in BackTrack 5 R1

How can I install the Broadcom BCM43142 driver in BackTrack 5 R1? Please can anyone guide me with step by step instructions as I am new at Linux.
0
votes
0answers
401 views

Undervolting in Linux

Could you recommend me something different like Linux-PHC for undervolting in Linux? I would like to undervolt my AMD Phenom 9850 CPU. I am using Debian squeeze x64. For underclocking I use ...
0
votes
0answers
361 views

Upgrade Firefox in Linux Mint 10

For some reason a while ago I was no longer able to use the Firefox that came with my Linux Mint 10 virtual machine. I've installed the new version of Firefox (16) using both the package manager and ...
0
votes
0answers
112 views

Troubleshooting span traffic shutdown interface?

I'm using guardium appilance, which has one of its port used to analyze span traffic. The base os is linux. The span traffic stopped coming during some time of operations. I asked the network team, ...
0
votes
0answers
354 views

Running 'Leafpad' on terminal opens Gedit

I am running leafpad on the terminal but it opens gedit instead. Any Ideas why this happens? I am using Openbox btw.
0
votes
0answers
141 views

Gigapixel Panorama not loading after converted with imagemagick

I made a 3GB tif panorama, but as 3GB is a too big size to open in a computer with a 3Gb RAM, i converted it to JPG convert input.tif output.jpg The result was a 15Mb(?!?) JPG, which i am unable ...
0
votes
0answers
3k views

ADDRCONF(NETDEV_UP): eth0: link is not ready

my OS (Ubuntu 12.04) started to load slowly. After I choose OS from GRUB, it takes like 50 seconds of loading to get to login screen. I google'd, that command dmesg can provide some useful output. ...
0
votes
0answers
215 views

A Reboot() command with failover

I'm implementing a Reboot() call in my application. It's an embedded application, so no console, keyboard or power switch. The Reboot() must eventually restart the system no matter what. Ideally, I ...
0
votes
0answers
491 views

ffmpeg: problems when copying the audio

When I run this ffmpeg -i video.mp4 -codec copy video.avi I get a broken audio: a crackling like a stuck LP. The input-audio is aac When I re-encode the audio like this ffmpeg -i video.mp4 -codec:v:0 ...
0
votes
0answers
120 views

Under Mint 12 and the latest version of the Enlightenment window manager the battery monitor gadget doesn't report correctly

Can anyone give me a clue where to look to fix it, and, can anyone point me to a good replacement?
0
votes
0answers
261 views

“TouchPad lost synchronization” errors in dmesg

My openSUSE 11.3 laptop is running slow. dmesg shows the following errors: [ 733.162161] psmouse.c: TouchPad at isa0060/serio4/input0 lost synchronization, throwing 5 bytes away. [ 774.230841] ...
0
votes
0answers
1k views

Multiple network adapters with Virtualbox guests?

I'm running VBox under Mac OS with multiple Linux guests (Redhat). Everything works fine except I want to test dual NICs in one of my guests. I'm using host-only adapters and would like to simulate ...
0
votes
0answers
128 views

Comparing the efficiency of Network Stack of two different Operating Systems

I want to compare the efficiency of Network Stacks of two different operating systems(Linux and Solaris) by measuring the amount of resources(context switches, systemcalls etc) that are consumed in ...
0
votes
0answers
381 views

How to backup and restore Oracle 10G Express in Linux VPS?

I have installed Oracle 10g Express in two Centos VPS server. How can I generate an Oracle backup from server one, so that I can restore the database on server two? Can anyone help on this?
0
votes
0answers
694 views

Proprietary ATI driver on linux not working with GLUT

I have a laptop with an ATI Radeon 3450 Graphic card (Lenovo U330). I have Crunchbang Linux (basically Debian Squeeze). After installing the proprietary ATI drivers ...
0
votes
0answers
705 views

How to install VGA2USB in ArchLinux?

How do I install VGA2USB in Arch Linux? I downloaded the driver vga2usb-3.26.0.27-ubuntu-3.0.0-12-server_X86_64.tbz I tried with latest kernel did not worked failed with same issue, now showing with ...
0
votes
0answers
404 views

“Error inserting microcode” on new install of Fedora 15

I started getting an error that looked like this the other day, and I Googled the problem but couldn't find the solution (probably because I don't quite to know what to Google), so I reinstalled the ...
-1
votes
0answers
36 views

What does `udev` stand for in Linux?

According to wikipedia, "udev is a device manager for the Linux kernel." I just wonder what does udev stand for? Especially, what does the first letter u stand for? userspace or universal?
-1
votes
0answers
19 views

iptables forward too many interface

Can I build a FORWARD rule which gives both an in/out and SRC/DST IP host? I need to create a rule that does the following: PC -> switch (non-mgmt) -> Linux Router (VLAN) -> world: block ICMP $ ...
-2
votes
0answers
29 views

How to modify filesystem creation date in Redhat (LVM)

I want to change filesystem creation date in redhat linux