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

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1
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1answer
40 views

Key is not being released on very short keypresses

On my keyboard, when I press a key very lightly and release it quickly (talking about probably 0.1s of button press here), the key does not issue a release event correctly and instead typed repeatedly ...
1
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1answer
205 views

generate consistent machine unique ID in c programming

Is it possible to generate a unique ID that wouldn't change over time unless there is hardware changes. The hardware must be generated with a c program. That also would be great if it were robust to ...
2
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1answer
1k views

Should I install the AMD/Intel microcode packages when running Debian?

Should I install the AMD/Intel microcode packages when running Debian? What exactly do they do, and when should/shouldn't I install them? Why are they in non-free?
2
votes
1answer
230 views

searching for hardware via lspci

I just bought Lenovo ThinkPad X201 t. I have installed Debian Jessie (testing). I was able to make working all of its hardware, but with one exception. And that is mobile broadband modem. I have ...
1
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1answer
271 views

Ubuntu 14.04 built in webcam not being detected

Hello I am running Ubuntu 14.04 and my webcam is not recognized. It used to work fine but recently it is not working. I got my screen replaced by dell and also the motherboard and heatsinks for a ...
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5answers
14k views

generate consistent machine unique ID

Can we generate a unique id for each PC, something like uuuidgen, but it will never change unless there are hardware changes? I was thinking about merging CPUID and MACADDR and hash them to generate ...
2
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1answer
28 views

Clocks, Hardware, and Booting

A few days ago, I was having some difficulty booting my Mint 17.2 installation. Essentially, after boot my screen would go black, and I would not be able to do anything - even after some time, the GUI ...
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0answers
25 views

How to broadcast voice from USB microphone to apache?

I have a webcam and a microphone. I wan't to send both, sound and video to my index.php so i can see the video from the camera and hear the sound from the microphone. I already managed to stream the ...
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6answers
35k views

Harddisk serial number from terminal?

I have multiple harddisks which get connected to my server and I'm not sure which one is what in the view of sdXY . If I can see the serial numbers of my harddisks from terminal, I can easily identify ...
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1answer
2k 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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1answer
1k views

Debian Sid, AMD RS880 [Radeon HD 4250], black screen on boot

My computer booted under Debian Wheezy (3.2 kernel) with no graphics problems whatsoever. After updating to sid (3.10 kernel), the screen goes black (that is, the display flashes a bit and then goes ...
0
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1answer
34 views

how to find out how much power my external hard drive is using?

I want to monitor the power usage when plugged into my laptop (specifically voltage and current) of my hard drive during various activities. How do I find out if I am on Linux? (right now I am using ...
1
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1answer
74 views

What is /proc/dma? Is it just for legacy support?

I reading a Linux book that told me I can check the dma channels by reading /proc/dma. This is what I see when I run cat /proc/dma: 2: floppy 4: cascade I'm confused because that looks like old ...
7
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1answer
9k views

How to verify if hardware acceleration is enabled?

How can I verify whether hardware acceleration is available and whether it is enabled for my video card.
6
votes
2answers
2k views

Support for usb 3.0?

I could not seem to find the question here but I was wondering what experience if any users have had with USB 3.0? My asus p5x58d has usb 3 on it but I have yet to try it out and also do not know ...
16
votes
4answers
21k 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?
2
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2answers
79 views

laptop with bad monitor turned into server: how to disable monitor

I have a laptop with an absolutly useless monitor (well, probably video card), so I put an Ubuntu 14.04 server on it. Of course if I turn it on, the monitor still turns on and blinks in vivid colors, ...
50
votes
7answers
10k views

Can a laptop battery explode while using Linux?

I have a 2013 Retina MacBook Pro, and I really want to install Debian on it. I have the know-how and have had at least three Debian systems before this. I am very knowledgable with the command-line ...
2
votes
2answers
43 views

Network acting crazy… How can I know whether it's hardware?

I have a homeserver, with a built-in network card, ASRock E350M1 Motherboard. On the computer there's a Debian Jessie system on an SSD, and 4 HDDs in raid configuration for my data. I usually have ...
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2answers
648 views

Enabling graphics acceleration for OpenGL over remotely via VPN from Ubuntu client(my laptop)to Windows server(computation is here)

I have an access to Internet via a Wifi. Then, I have a VPN connection established from my Ubuntu laptop to a LAN network. My Windows Machine where computation happens using OpenGL is on the same ...
2
votes
1answer
272 views

How can two identical virtual addresses point to different physical addresses?

Following a fork() call in Linux, two processes (one being a child of the other) will share allocated heap memory. These allocated pages are marked COW (copy-on-write) and will remain shared until ...
1
vote
1answer
1k views

Intel 6300 wireless card won't work on CentOS 7 - worked during install though!

I installed centos 7 on a laptop with an intel 6300 wireless card in it. During the install, the wireless card was available and I was able to connect to my lan. After the install, I don't see the ...
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0answers
45 views

A/D pins always read max (1023)

I am using the Aria G25 board from Acme Systems. I have their Terra board breakout. I have also asked this question on their google groups but thought it might be a more general issue so have posted ...
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0answers
2k views

What is the difference between I2C and PS2 mode?

On my Dell XPS 13 9343 my touchpad can work with I2C bus or in PS2 mode. What is the difference between those two modes ? Why are they both available ? The output of xinput is : Virtual core ...
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4answers
31k views

How to Determine the Amount of RAM Slots In Use?

I forgot how many RAM modules are installed on my laptop. I do not want to unscrew it but want to look it up on the console using bash. How do I gather this information?
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1answer
48 views

Hardware specs for Linux machine for cluster administration [closed]

I have just started as cluster system administrator and was asked to choose some features to get bought a personal machine to work on, and most intensive calculations will be perform in the cluster. I ...
0
votes
0answers
28 views

Server hardware errors?

I have a large data server running ZFS-on-Linux under Debian 6.0.10, which has been running stably for several years. In the last two weeks, however, it's been crashing every few days and throwing ...
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votes
2answers
3k views

How can I get the Bluetooth working on my Lenovo Yoga 3?

I have a Lenovo Yoga 3 that apparently has a new Broadcom Bluetooth device. The bluetooth is detected at boot and when I try to pair a something in gnome, I can see a list of devices but none of them ...
0
votes
0answers
66 views

PCI Device Missing After Reboot

I have a DVBSky T9580 PCI tuner card. My problem is that after rebooting,, the device dissapears, lspci does not list it any more. I tried rebooting with reboot command as well as shutdown -r 0. ...
12
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8answers
10k views

How to flash firmware under Linux in practice?

Well, I am feeling too old for jumping through several burning hoops to upgrade several firmwares via the usual vendor-specific way: Download some DOS tools, waste some time creating a (Free-)DOS boot ...
2
votes
0answers
36 views

Random pieces of ancient hardware not working together (Mac G5, Sun network adapter)

This is probably some kind of weird esoteric hardware combination but it's not why I did it. It's just what I had lying around. I have a 2x 2ghz Mac G5 and I can't really bring myself to part with it ...
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0answers
30 views

External monitor script has become unreliable

I have been using the following udev rule and bash script to automatically configure my external monitor for some time now, however recently the script has become unreliable, usually doing the ...
4
votes
2answers
17k views

Missing “version.h” when installing fglrx

I have downloaded the fglrx driver installer from the ATI drivers page. when I start the installation, everything goes smoothly until I hit an error message, telling me to check ...
12
votes
8answers
10k 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: ...
0
votes
1answer
30 views

Use NVIDIA graphic card as regular resource

I don't use my graphic card anymore, but it is still laying there, idle. Is there a way I can turn it back on and use it just a regular, additional CPU/RAM for my laptop?
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0answers
65 views

How to get the Adaptec 1200A to work under Linux at UDMA/100 (instead of 66)

A while ago, I got myself a used Adaptec 1200A controller card to keep my onboard slots free for easier connect/disconnect of drives and now I am wondering why this card will only operate at UDMA 66. ...
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0answers
11 views

How and when is keyboard data encoded from keyboard to application? [duplicate]

I hope this is not the wrong place to ask this, if it is, please point me in the right direction. As the title says, how and when is keyboard data encoded? I just wanna know in basic terms the ...
0
votes
1answer
208 views

Why are the up and down arrows keys not always working on multiple platforms?

Very recently, maybe within the last two weeks this issue has started cropping up: once maybe every two days or so, the up and down arrow keys simply stop working for a while - I can move the cursor ...
98
votes
12answers
416k views

How do I find out what hard disks are in the system?

I need to know what hard disks are available, including ones that aren't mounted and possibly aren't formatted. I can't find them in dmesg or /var/log/messages (too much to scroll through). I'm hoping ...
0
votes
1answer
217 views

Problem with internal USB hub & my smartphone

I have a problem when plugging in a smartphone, as journalctl shows below: jul 19 17:28:43 newhope.belkin.home kernel: usb 1-1: new full-speed USB device number 2 using xhci_hcd jul 19 17:28:43 ...
0
votes
1answer
430 views

Fresh install Debian Jessie over existing Debian Wheezy on laptop

I am very new to Linux and any sort of communities for that matter so if I'm posting to the wrong place please let me know. I was hoping I could find a solution to my "problem". I installed Debian ...
1
vote
1answer
158 views

lsusb shows USB devices that are not connected

I have the weird issue that lsusb shows USB devices that are not connected. We have a couple of devices connected via USB. To disconnect them from the system we disable the power to the USB port with ...
3
votes
0answers
1k views

Kernel does not detect Hardware / Software or Hardware fault

I've got more of a basic question for you: My linux kernel (I tried several here from stock 2.6, 3.2 and 3.5 as well as a custom 3.7.3 one) does not detect my synaptics touchpad - or I'am too dumb ...
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0answers
134 views

Chrome with YouTube uses a lot of CPU on Asus Eee PC

Is it possible to play 480p videos smoothly on my Asus Eee PC 1025CE with LM17 onboard? I've seen discussion about this on other sites online, but nothing here. PC: Asus Eee PC 1025CE Chrome: Version ...
2
votes
1answer
62 views

Get device's bus port

How can I get a list of device bus ports? For example the parallel port is the 0x378. Is there a command to list each port and its device? On Windows it is possible looking device detail in the ...
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vote
0answers
178 views

Ubuntu 14.04 - Multiple Griffin Technology Powermate Knobs

I am running Ubuntu 14.04, and I want to run multiple griffin powermate knobs: https://store.griffintechnology.com/powermate. I want to map them to different keys other than audio control. I want to ...
0
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0answers
236 views

New-installed debian system hangs on boot (probably a hardware issue, likely USB, maybe Ethernet?)

I recently migrated an entire system from Crunchbang 11 to vanilla Debian 8.1 (in the cleanest way possible --- backed it all up, blew away the old install, reinstalled the old /home and /usr/local, ...
0
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1answer
93 views

Switching to Linux permanently [closed]

I have searched through the forum for similar answers but I had no success in finding a satisfactory one. Windows and I had a fight last night and I decided to break up with 'it'. :)) Therefore I ...
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1answer
1k views

How to check firmware version in solaris?

I have searched in /usr/platform/sun4u/sbin path. But not sure how to get the firmware version.
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0answers
36 views

X server error due to possible hardware issue?

I am running Linux Mint 17, and have encountered an X server error that prevented the OS from booting, similar to the error described here. Typically, such an error suggests a problem with the ...