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

learn more… | top users | synonyms

1
vote
0answers
31 views

Pcie 1.1 device is not detected on a pcie gen 3 slot

My PC is running in Ubuntu 12.04 LTS with kernel version 3.11.0-23. The link below is my PC model: http://www.villman.com/Product-Detail/HP_Pavilion_500_232d I inserted a x4 pcie 1.1 device on the ...
2
votes
1answer
516 views

Realtek RTS5209 PCI-E Card Reader only work if card is inserted before boot

Hardware Info Laptop Model: Sony Vaio Pro 13 Problematic Hardware: Bulti-in Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader Problem description Here is the problem, if I boot with ...
2
votes
1answer
75 views

Direct i2c hardware access

I have a custom hardware, i.mx6q based board, running a custom stripped version of Debian, the usual Linux tools to make life easy are not available. Can I read and write to i2c directly with root ...
0
votes
0answers
101 views

Extremely slow CD-ROM burning

When I try to burn a CD-ROM using K3B, the burner slows down from 10x to 0.12x after writing exactly 71MB. Consequently, burning a 142MB live CD takes more than a hour. Why is this happening? The ...
1
vote
0answers
383 views

Microphone not working on Centos 6.5

I have installed CentOS 6.5 on a Dell Insperion with an Intel chip. I first noticed that my microphone is not working on Skype on CentOS although it was working fine with Windows 7 on the same box. ...
3
votes
0answers
2k views

“Northbridge Error (node 0): ECC Error in the Probe Filter directory”

I've received an e-mail from a user worried that the following errors on one of his servers is indicative of a serious problem. The trouble is, the errors below are all that I have to go on. I ...
0
votes
2answers
184 views

Giving more priority to a USB device

I have a keyboard with USB cable connected to computer through a USB 2.0 socket. But when I type fast, Ubuntu ignores some key messages (e.g. I may type CORRECT but what is typed may be CORET) . After ...
2
votes
1answer
512 views

linux command to list details (like PID, VID) of connected devices to the serial port(s) (like RS232) of a computer

with USB port we can search Product ID (PID) and Vender ID (VID) of connected devices by using lsusb command. Is there a similar way to get PID and VID if the same device is connected to RS232 serial ...
2
votes
0answers
30 views

Creating my own “BBB image” for installing it in several BBBs?

I have been working with a Beaglebone Black for a while now, I have created a software for a device which I am happy with. Now I have a few more Beaglebone Blacks where I would like to install the ...
0
votes
2answers
204 views

Hardware requirements for building a Debian server that will run as ltsp, vpn, and fileserver

I will be building a server based on Debian that will have several functions in a small office (5-10 users). The primary function will be as a file server, but I would like to set the office up to ...
3
votes
3answers
776 views

how is page size determined in virtual address space?

Linux uses a virtual memory system where all of the addresses are virtual addresses and not physical addresses. These virtual addresses are converted into physical addresses by the processor. To ...
0
votes
1answer
110 views

liveCDs detecting wrong video card

I just replaced my video / graphics card with a new model, the AMD firepro m6100. None of my ubuntu 13.10 based liveCDs are able to run correctly (manually running startx from tty1 fails, so that's ...
11
votes
4answers
4k views

Detecting headphone connection/disconnection in Linux

I am trying to detect a signal when a headphone is connected or disconnected from the system. What is the best way to do this? If there is a special board with drivers, that will be my preferred ...
4
votes
2answers
7k views

How to check the life left in SSD or the medium's wear level?

We all know that SSDs have a limited predetermined life span. How do I check in Linux what the current health status of an SSD is? Most Google search results would ask you to look up S.M.A.R.T. ...
0
votes
0answers
23 views

Where to emit hardware events?

What is the most common way to emit events from hardware sensors? Use ACPI events, send signals via DBUS? My goal is compatibility so other apps can easily use those inputs. What is the Cleanest ...
0
votes
0answers
41 views

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 ...
0
votes
2answers
2k 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 ...
1
vote
1answer
233 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 ...
1
vote
1answer
162 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 ...
0
votes
0answers
129 views

fix webcam problem by changing its file in /dev/

At Ubuntu-Gnome 13.10, My webcam can be accessed by cheese; Also Skype determined the webcam, But it does not show any output for webcam at options window (Webcam also doesn't turn on). Skype ...
0
votes
2answers
136 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 ...
1
vote
0answers
106 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 ...
1
vote
0answers
155 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 ...
8
votes
2answers
5k views

How to check which GPU is active

I have 2 GPU's in my netbook. How do I know which one I'm actually using at any given moment?
1
vote
0answers
530 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 ...
1
vote
1answer
103 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 ...
0
votes
0answers
52 views

How to customize Dell PowerEdge 2970 LED info screen via CentOS?

As shown in the photo below, the Dell PowerEdge 2970 as an information screen on it. I have CentOS installed. Is there a way via the OS to change this data? If so, how? Thanks in advance!
8
votes
3answers
6k 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 ...
1
vote
0answers
73 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 ...
1
vote
1answer
29 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 ...
2
votes
3answers
232 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 ...
3
votes
1answer
440 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 ...
0
votes
0answers
87 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 ...
1
vote
0answers
213 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) ...
0
votes
1answer
44 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 ...
2
votes
1answer
285 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 ...
3
votes
1answer
54 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.
4
votes
1answer
173 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
80 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 ...
2
votes
2answers
2k 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?
1
vote
1answer
80 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 ...
1
vote
1answer
107 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 ...
0
votes
2answers
153 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, ...
0
votes
1answer
264 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 ...
1
vote
1answer
47 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 ...
1
vote
1answer
288 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, ...
1
vote
1answer
142 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 ...
1
vote
2answers
77 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 ...
5
votes
3answers
5k 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 ...
3
votes
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 ...