General questions about hardware under Linux/Unix. Use a more specific tag if applicable.

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pfSense and Belkin Integration

I am in a unique situation. I want to have my previous Linux box as a router, but I don't have wireless capability on it or even a second ethernet port, so I was wondering if there was a way I could ...
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2answers
3k views

Linux fan control?

For some unknown reason, my laptop fan stays on consistently. Even when I'm using less than 2% CPU and the air coming out of the vent is seemingly cooler than the air in the room, the fan always stays ...
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1answer
462 views

machine hardware name, processor type and hardware platform

The followings are the machine hardware names, processor types and hardware platforms returned by uname: on a server (with some 64-bit Linux distribution) -bash-4.1$ uname -m x86_64 -bash-4.1$ uname ...
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1answer
305 views

Do I have two VGA compatible controllers?

lshw shows two VGA compatible controllers. Where are they located? What are they used for respectively? Which one do you recommend to use? Which of the two controllers am I using currently? With ...
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2answers
284 views

Linux dmesg errors, motherboard issue?

When doing heavy disk IO on my system (16GB RAM, 6 cores, RAID0 PCIe SSD), the system stalls and eventually crashes. Normal day-to-day disk IO is fine, just prolonged read/write such as a database ...
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0answers
146 views

wlan on Elastix (unix) [closed]

I have Elastix server on a Vmware virtual machine (nat). I want to connect the Elastix server to a wifi network in order to access the server from another client (machine) in the same network.The ...
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0answers
191 views

weird problem with 64 bit install and memory

I have a laptop with 8gb of RAM in two 4Gb slots, the processor is 64 bit compatible. However when I try to install 64 bit version of Linux (I tried, mint, arch, manjaro), it refuses to load the ...
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0answers
809 views

Pulseaudio and Pavucontrol very unstable

I've recently installed ArchLinux on my desktop, together witht the GNOME3 Desktop. I installed pulseaudio and pavucontrol, which both seem to be very unstable. First I couldn't get my headset to ...
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1answer
162 views

Brightness issues (etc.) with Nvidia Card in OpenBox

After a fresh install of Crunchbang Linux 11 on an Intel 486 powered machine I struggle with setting the display brightness which blasts at 100% … this is really, physically painful. My efforts ...
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3answers
7k views

How can I tell if my hard drive is PATA or SATA?

I have an ATA hard disk in my laptop, running Fedora 11, kernel 2.6.30.10-105.2.23.fc11.i586. I am looking to upgrade the disk in here (would love to get an SSD) but I forgot if it's a serial ATA or ...
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0answers
113 views

Suspend Linux (Mint) with external hard drive plugged in

I simply try to suspend the session while my external hard drive is plugged in (doesn't matter whether I have mounted or dismounted it, and this error does not apply to other filesystems, like flash ...
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1answer
33 views

Any reason an HP C7499A DVD ROM shouldn't work on an old Sun Ultra Enterprise II?

I'm trying to switch from a CD-ROM to a DVD-ROM on an old Sparc Ultra Enterprise II. I got this C7499A but I can't seem to access anything on it. I thought that since it's SCSI it should work even ...
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3answers
422 views

Starting Linux from power off at predetermined time (and executing command)?

To put it simply, I'm trying to use my computer as an alarm clock. It's slightly old and noisy, so I'd like it to start from power off at a scheduled time and then execute a command, such as playing ...
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1answer
795 views

Mint fan control

I've installed Mint 15 on my Alienware m14x and can't figure out one thing. For some reason CPU overheats and fan does not respond to that. It always stays calm and quiet. How exactly I can change ...
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0answers
114 views

PC -> to -> Server. How to disable video card test inside BIOS?

I'm trying to setup my old PC as a server. Motherboard EliteGroup P4S5A/DX. Upto 2Gb of DDR 1 Ram. Video card: vga1 at pci1 dev 0 function 0 "NVIDIA GeForce4 MX 440" rev 0xa3 About a 2-days I'm ...
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0answers
255 views

Using Radeon on muxless system with multiple X servers

I'm using HP ProBook 4740s laptop with muxless hybrid graphics: root@mekras: lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) ...
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1answer
53 views

Debian Squeeze not detecting any hardware after Gnome 3.8 upgrade

So, somehow I accidentally upgraded to Gnome 3.8 (Don't ask me how, I have no idea). And after a reboot, none of my peripheral devices or interfaces are working. The built in mouse and keyboard do ...
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1answer
480 views

Interpret the output of lstopo

I have a output from lstopo --output-format txt -v --no-io > lstopo.txt for a 8-core node in a cluster, which is https://dl.dropboxusercontent.com/u/13029929/lstopo.txt The file is a text drawing ...
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1answer
61 views

Is there a tool that I can use to create a diagram of my system's architecture?

I'm looking for a tool that can create both graphical files as well as text based ASCII representations of my system's CPU & motherboard architectures.
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1answer
186 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 ...
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votes
1answer
88 views

What is not accessible from userspace?

I read somewhere (3.1.3) that there's a high ring (supervisor mode) and a low ring (user mode) and that some "things" can be run only from the highest ring. What do they mean by "things"? I'd guess ...
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2answers
4k views

Is there a way to dump a CPU's CPUID information?

I'm familiar with lshw, /proc/cpuinfo, etc. But is there a method for getting at a CPU's CPUID opcode?
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1answer
109 views

MAC Address changes after dirty shutdown

I'm having a strange issue which I originally thought was tied to the fact that I created an Ubuntu system from an image of another. However, after reinstalling Ubuntu from scratch I am getting the ...
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1answer
119 views

Touchpad utility

I'm new in the Linux area. I just installed Elementary OS, which is related to Ubuntu, and I want to know if there is a utility for my mouse pad. In Windows I had Synaptics that allowed me to scroll ...
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2answers
196 views

Hard disk power management with image toggling in display

We have a system in which we almost toggle some display data in the screen 24 hours x 7 days a week. Since our application runs every day, we see some hard disk failures in the field. Unfortunately, ...
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1answer
341 views

USB 3.0 host controller suddenly stopped working

sudo lshw *-usb:0 UNCLAIMED description: USB controller product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller vendor: Intel Corporation ...
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1answer
60 views

Bad blocks only with extension cord?

My external hard drive was acting strangely, so I ran badblocks, and it seemed that nearly every block was bad from the first minute I ran it. If I did badblocks -v > file, the file was over 100MB ...
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1answer
406 views

Old laptop won't boot from live CDs

I've got an old Pentium III based Dell Laptop, the originally shipped with Windows 2K and has had Windows XP installed on it. I though I could get something useful out of it if I run Puppy, Lubuntu, ...
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1answer
182 views

`cat /dev/ttyACM` loses data when piped through netcat

I'm reading data from /dev/ttyACM0 using cat /dev/ttyACM0 on a Raspberry Pi. The data comes from a device, which sends lines in the form 15.00 1316013 15 where the first number is a value, the ...
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2answers
90 views

Virtualize Windows on Fedora and let Windows see real hardware

My question may be weird. I want to know if there is some virtual machine that lets me install Windows 7 under Linux and lets Windows use, as a virtual device, the same device that is really installed ...
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3answers
6k views

Is my USB 2.0 device running at full speed?

How can I tell if my USB flash drive is running at full USB 2.0 speed? Currently I'd just like to verify that the drive is plugged into a 480 Mbps port, but in the past I've been unsure if a given ...
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2answers
2k views

Wireless mouse freezes frequently for a second on laptop, when on battery

I have Samsung NP360E5A-A07PL laptop with ELAN Smart-Pad (ETPS/2 Elantech Touchpad, according to gpointing-device-settings), and a Logitech M195 wireless mouse (with an USB receiver). On Linux ...
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0answers
51 views

Headset not working in OpenSUSE

When I plugin my headset into my computer, running OpenSUSE, I do not get any audio. The regular speakers work fine. The reason this is happening, I think, is because it still tries to output through ...
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votes
3answers
583 views

When is it safe to disconnect my external HDD?

In Windows, there's an option to "safely remove hardware". Ignoring the fact that it almost always fails, and that most of the time I simply have to plug the device out, I get the initiative behind ...
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4answers
4k views

Stress testing SD cards using linux

I got into a little debate with someone yesterday regarding the logic and/or veracity of my answer here, vis., that logging and maintaining fs meta-data on a decent (GB+) sized SD card could never be ...
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5answers
7k views

How to know if /dev/sdX is a connected USB or HDD?

How can I know if /dev/sdX is a local HDD or usb key ? best doing this without root privileges. OK , udevadm helped a lot: For local HDD: udevadm info --query=all --name=sdb | grep ID_BUS E: ...
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2answers
123 views

Varing speed when reading sequentially from a HDD

I have just got a new HDD and I wanted to test the sequential read speed (the whole disk). I used: pv /dev/sda > /dev/null The disk is 500GB WD VelociRaptor (WD5000HHTZ). At the beginning the ...
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1answer
197 views

Using Bash to write to a device in /sys?

I have one of these: Basically, it's a USB device with three LEDs (red, green, and blue). The Linux kernel has supported this device through the usbled module for quite some time now. However, I ...
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1answer
140 views

Disable hardware ad-hoc

I am running Parted Magic doing some data recovery, that I am finding myself concurrently using for some other minor tasks also. Problem being, typing is a nightmare, as the trackpad is enabled (No ...
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2answers
2k views

Can't Get Synaptics Touchpad Disabled

The touchpad comes back to life after a few seconds. The Windows driver had a disable-entirely option. I do not want to use the touchpad at all, so anything up to and including a hardware fix is now ...
2
votes
3answers
441 views

The only way to turn off/on wifi is to put laptop into sleep mode

After start GNOME prints Hardware disabled. I've tried to use keyboard shortcut and it doesn't work. Only way to disable/enable hardware wifi is to put laptop into sleep mode and restore.
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2answers
234 views

How to harden linux against DMA attacks?

How can I configure my linux system to be secure against DMA-attacks? Is there a way to make them impossible? DMA Attacks excerpt From wikipedia In modern operating systems, non-system (i.e. ...
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2answers
195 views

KDE becomes slow

I experience problems with KDE 4.11.1 on Arch Linux. It suddenly becomes laggy and unresponsive and just as suddenly returns to the normal state after some time. Normal CPU load (KSysGuard): ...
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votes
1answer
490 views

Is there any tool to view live statistics about a Radeon GPU?

I've checked out GPU usage monitoring (CUDA), but are there similar tools for AMD/ATI cards? Or kind of universal tools? I want to check out if my applications use the 256 MB of RAM of the video card ...
4
votes
1answer
172 views

Cleanest way to use a smartphone as a conventional linux workstation

I have a GT-S5830 Samsung smartphone with Android 2.xxx, that I am not using as a phone. It would be nice if the device could be used as a wifi repeater. Unfortunately, this is impossible or not ...
4
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1answer
2k views

Does segfaults mean bad memory

This is a brand new server with a new install and fresh compile of Apache/PHP with nothing crazy. Just a WordPress site hosted and I get the following. Could this just mean bad RAM? If so how can I ...
2
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1answer
634 views

Best way to encrypt my system on an ssd

I consider to buy an ssd for my laptop (something like Samsung 830 or 840) to make the system more responsive. I want my system (at least my home partition) to be encrypted. However I know about ...
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1answer
1k views

My laptop shuts down every time I unplug it

I am using a Lenovo G580 with Linux Mint 14 updated. My laptop shuts off every time I unplug it as if there is no battery even when I am using the BIOS. But, It detects the battery as "84% charging" ...
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votes
5answers
7k views

Low Cost, 2 Ethernet Ports & Runs Linux [closed]

Looking for an inexpensive embedded device that contains 2 Ethernet Ports, runs Linux (or some other type of Unix), and is under $50. My main concern is cost. It must be under $50 and have 2 Ethernet ...
0
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0answers
208 views

Wifi-Hardware seems not to be enabled

in my MSI Wind-Box DC 110 I have this Wifi Chip: RTL8188CE (says the sticker on the chassis and the vendor told me that they are sure the device is implemented) and I cannot connect to any Wifi - ...