Questions tagged [led]

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Laptop internal display no longer working

I have a Toshiba laptop which has a broken LED screen the screen was broken in transit, therefore you can assume that it was not handled with care. Whilst it was broken it still worked, therefore I ...
Rich's user avatar
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1 vote
1 answer
198 views

Sk6812 addressable rgbw strip with mobo argb header

I was wondering if I could add an rgbw strip to my pc. I rouled out the 4pin connector for obvious reasons (no channel for w). Then, I saw a 3 pin addressable led strip with rgbw. Is there a way to ...
nect's user avatar
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97 views

How do I turn keyboard light on Qubes?

I tried xset led 3 and xset led on but nothing seems to be working. A simple google search doesn't yield much.
clickerticker48's user avatar
1 vote
0 answers
551 views

Connecting RGB LED strip to pc controller

I just bought a computer case Sharkoon pure steel rgb. It comes with 4 rgb fans that connects to a controller according to the following image: After connecting these 4 fans I still have 4 more empty ...
Ben's user avatar
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671 views

Strange issue with Dell PowerEdge R610 hard drive status lights

I setup a test FreeNAS server the other day on a spare Dell PowerEdge r610 and noticed that the hard drive activity LEDs are always both lit no matter what the server is doing. I have 6 1TB 7.2k SAS ...
Richie086's user avatar
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95 views

MacBook Pro + Acer H236HL + electric standing desk

I have two external Acer H236HL displays connected to an mid 2015 MacBook Pro Retina all perched on a standing desk. The standing desk is a new addition. What I am finding is that when I raise or ...
afitnerd's user avatar
  • 121
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887 views

Samsung LED monitor SyncMaster SA300 horizontal dark lines

When I started a video game, suddenly all over the screen appeared a lot of horizontal, dark lines. At first I thought it was graphic card problem, but I've changed monitor and everything looked fine. ...
zoid_dj's user avatar
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0 answers
488 views

Computer freezes and CPU LED hangs

My CPU led hangs(stop blinking and constant led ) and also hangs display. It shows display problem sometime monitor shows out of range signal . I have format windows(windows 7(32 bit)) number of times,...
Rohit's user avatar
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5k views

Why is there no red light on the CPU after I press the power button

Today I got a 4 GB RAM for my PC. SO I turned on my PC, without this new RAM, and it gave a warning about wrong system time. So I pressed F2 and it loaded normally. Then I turned it off and inserted ...
Shadow_Sphynx's user avatar
1 vote
1 answer
2k views

Turn off LEDs on case fans?

I'm thinking of getting LED strips with adjustable colors for my PC. The problem is that I have several case fans, all with bright LEDs on them. I want to turn off these LEDs. What my first idea is is ...
markasoftware's user avatar
1 vote
1 answer
3k views

Weird LED laptop screen flickering after replacement

I have a 3 years old Toshiba Satellite L750D. A couple of days ago it's screen started having random noisy horizontal bars on the screen (some noises for 1-2 seconds, then nothing for minutes, then ...
kyborg_hu's user avatar
1 vote
1 answer
582 views

A screen virtual LED on linux

We have some LEDs on our machine to indicate the status of Caps Lock, Num Lock etc. Now I need a virtual LED in Linux to notify something. For example, I wrote a script to monitor a website. When ...
Libin Wen's user avatar
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1 answer
3k views

CPU fan twitching phase leds blinking - computer won't boot

I have a big problem that I got today. Yesterday computer was "on" normally, I went to sleep without shutting it down. When I woke up, I heard a strange sound and was unable to bring it up from ...
SooX's user avatar
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226 views

How do I connect this RGB controller?

I have a RGB controller that came with my PC case. It's SATA powered and has 6, 4-pin slots for fans and strips and 1, 4 pin at the top labeled MB. I assume I can plug that in to the RGB Header on my ...
AimD's user avatar
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212 views

How to prevent power led blink on ASUS Prime A320M-K?

My desktop pc's power led (blue light) blinks when it sleeps, and I find it annoying. I searched on it's BIOS, and found one led setting. I disabled it, but it isn't related to this. I think that ...
just_a_developer's user avatar
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300 views

How would I disconnect the GPU LED light?

I have tried nvidia-settings --assign GPULogoBrightness=0 but the LED doesn't change. It's a Zotac Nvidia GeForce RTX 3060Ti. I have seen Zotac software for Windows only. I run Ubuntu 22.04. But I was ...
user14094230's user avatar
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1 answer
193 views

Can those RGB light strips on RAM DIMMs typically be disabled?

These days, many of the RAM dimm modules one finds available come with gaudy, if not altogether garish, LED strips emitting either fixed-color lights or even cycling through some light pattern. But I'...
einpoklum's user avatar
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1 answer
561 views

Is my monitor CCFL or LED Backlight?

I opened up my monitor. I am not familiar with how to detect CCFL vs LED backlight. Can someone assist and explain why it is either CCFL or LED? Here is an image of the inside of my monitor:
Mokee's user avatar
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2 answers
4k views

Laptop not turning on and battery indicator led is blinking white

From some months, I have been facing trouble in starting up the laptop (ASUS VivoBook 14 Ryzen 4500U). When I turn my laptop on the battery indicator blinks white (even when plugged in). I can tell ...
Inferno_7's user avatar
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263 views

What does this hp led error code mean?

I have a HP ProBook 6450b that's been stuck in a boot loop with blinking LEDs going on/off. it sat outdoors, and may have gotten some soil dust inside, not sure, but booted up before that. Basically, ...
computeruser's user avatar
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0 answers
99 views

The cylinder led on my desktop is on and it’s res

I upgraded my cpu so I had to take apart most of my pc. When I put it back together there was a cylinder and lightning bolt led light that I’ve never seen turn on before. The cylinder is on and it’s ...
jailo's user avatar
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0 answers
49 views

PC freeze randomly when playing games

Since last Monday, my friend's computer experience random freezes when he is playing + streaming using OBS. When it happens, he still have the sound, but the image is frozen, the live is going off and ...
graille's user avatar
  • 101
0 votes
0 answers
846 views

White dots / blemish in LED monitor repairable?

This 10-year old LED monitor has white dots / blemishes on its screen. Is this still repairable or does the panel needs replacement? More pics:
IMB's user avatar
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128 views

Check LED light color & accuracy using Colormunki display probe

Ok, i have a XRite Colormunki display probe which i use to calibrate my screens using dispcal / Argyll. For a DIY film scanner project I'd like to check several neopixel led matrices I am ...
Hans Meiser's user avatar
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0 answers
87 views

Can RGB Fans work without them being lighted up?

i did a small research and still don't if RGB fans can work without the being lighted up. the real question is: Can i connect only the SATA POWER of the RGB controller? without connecting the MB? And,...
CookieWeeb's user avatar
0 votes
1 answer
566 views

Dell Latitude 5501 front LED flashing white-amber

I have a Dell Latitude 5501 and since today the front LED started flashing white-amber (1,1). When checking the docs, I find this site from Dell, but the pattern 1,1 is not described. Connecting or ...
Bart Friederichs's user avatar
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0 answers
227 views

How to make the LED lights in my PC box in my Lenovo Ideacentre Y720 Cube desktop turn off?

I want them off all the time even after restart, there's Lenovo Nerve Center but it turns them off only until a restart (the last time I checked)...
John1990's user avatar
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0 answers
96 views

Is "Dot Pitch" the distance between like-colored LEDs?

My understanding is that LEDs provide backlight in LED displays, while dot pitch is the distance between subpixels on the screen——these two are completely different concepts. But according to New ...
Lily Zhang's user avatar
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0 answers
30 views

Accessing the Debug LEDs on Dell OptiPlexes

Dell OptiPlex machines have debug LEDs on the front panel that say 1-2-3-4.  How can they be accessed from Linux/Ubuntu?  Perhaps via ACPI commands?
H3wastooshort's user avatar
0 votes
2 answers
4k views

Is it safe leaving monitors turned on (stand by) or could it harm the devices

I was wondering if I could leave my monitors turned on after I’ve turned off my PC, here are some other questions I had: Does the yellow status LED always suggest the monitor is in standby mode? Every ...
kyloehre1's user avatar
0 votes
1 answer
4k views

HP mute button LED not working

All of a sudden my mute LED stopped working. It was working fine for a while, but then out of the blue, it just stopped. At the same time, I also had an audio driver issue. So, I reinstalled the ...
Rohan Harish's user avatar
0 votes
0 answers
92 views

Is it okay if the Power LED to flash once while switching on UPS?

My CPUs front panel power LED is flashing once after I powered on the UPS. A 'TUCK' sound is also coming from my speakers. Is that normal or is there any issue with my motherboard?
Harikrishnan's user avatar
0 votes
1 answer
606 views

PC works fine, motherboard LED blinks when it's off

I had left my desktop PC with an ASUS motherboard plugged in at night (I generally unplug it when I'm not using it) and I noticed it's motherboard LED was blinking. I unplugged it, waited 10 seconds ...
Eärendil Baggins's user avatar
0 votes
0 answers
40 views

New mainboard faulty?

There is an issue with a new ASRock Z370 Extreme4 mainboard. It does not seem to switch on. Both the 24pin and 8pin (CPU) power cables are plugged in. The LEDs on the (Corsair 100R) case are not ...
fre_'s user avatar
  • 1
0 votes
1 answer
499 views

lenovo ideapad s510g laptop screen display not able to see anything

I have a Lenovo Laptop S510g, the issue is a black screen. if I connect to TV by using HDMI Cable I can see that monitor is displayed correctly, and also I tried turning on torch so I can see the ...
Developer's user avatar
  • 101
0 votes
0 answers
292 views

How does display (LCD/LED) connects to system bus?

The problem arose for me when I realized that the Laptops/PCs use two GPUs (one of them is an On-Chip low-performance and the other is an external high-performance GPU), and switch between these two ...
manili's user avatar
  • 111
0 votes
1 answer
928 views

Debug LED code off, no speaker sound

Any idea, why my new mainboard is not showing the post code / does not beep at all after start ? The cpu cooler is spinning. Only the audio light is on. I attached the 2 connectors power and cpu. The ...
theSpyCry's user avatar
  • 315
0 votes
0 answers
428 views

LED monitor takes about 10 minutes to power on

Recently, I have started to face this problem: I power on my monitor and PC, and there's no LED light on my Asus LED monitor (ASUS VH197). I have to wait for 5-10 minutes for the screen to show up ...
Keval's user avatar
  • 101
0 votes
1 answer
1k views

Disable light sensor of Webcam which lights up LED

I use an external webcam with pre-built LED lights which light up in low-light situations. The light sensor is on the top of the webcam. The software supplied with the webcam doesn't have a function ...
borb183's user avatar
0 votes
0 answers
206 views

LED monitor disturbed image, but before VGA is plugged it is OK

My monitor shows the setting menu (when I press the menu button of the monitor) very well (clear image) but the image output from my computer (desktop) is disturbed (like an old TV that has weak ...
Obay Abd-Algader's user avatar
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0 answers
136 views

Why is straight-on viewing of inexpensive LCD screens no longer the best angle?

I bought several inexpensive tablets in a range of sizes. Each is from a different manufacturer. I have not taken them apart, but using a magnifying glass, I can tell that each screen appears to be ...
End Anti-Semitic Hate's user avatar
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0 answers
741 views

Increasingly growing vertical lines on my laptop screen (Dell Inspiron 7520 SE)

I've had these 2 vertical lines since yesterday. Their length have doubled since then ! Would someone please help identifying the problem and the solution ? I've had this laptop for around 2 years now ...
Muhammad Gelbana's user avatar
0 votes
1 answer
3k views

Editing /sys/class/leds/phy0-led/ configs

I am trying to configure LEDs on my laptop running Xubuntu 14.04. I found out that there are some configs that affect LED behaviour, located in /sys/class/leds/phy0-led/. There are 3 relevant files: "...
Ufos's user avatar
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0 votes
1 answer
2k views

CM Devastator Keyboard - Turn On Backlight, Turn OFF Scroll Lock

So I recently purchased a CM Devastator keyboard, which has a LED backlight. The catch is, that the backlight is toggled with the ScrollLock key. So you have to have ScrollLock "On" in order to have ...
NotReallyWorking's user avatar
0 votes
1 answer
1k views

the led of wireless card is always flashing

I just installed archlinux and awesome on my laptop. But I find that the led of wireless card is always flashing in connect status. Is there any way to disable it? NIC: 07:00.0 Network controller: ...
user1179442's user avatar
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0 answers
806 views

Calibrations settings stored in monitor

I recently bought new Samsung SyncMaster S22B300B. Its colors were awesome. To play with its settings comfortably using mouse, I installed Samsung MagicTune. There are two calibration options in it. ...
LifeH2O's user avatar
  • 1,243
0 votes
0 answers
220 views

Keyboard leds and X11 configuration changes randomly

I've been having this problem for a while now (= months). Though it's not life or death, it's like radiation poisoning - it accumulates, and reached a critical point. Here goes: The Numlock and ...
user avatar
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0 answers
844 views

Adding sensors on Intel Atom through GPIO

I am building a portable medical kit on Intel Atom N240 series, loaded with FC 11. I am adding sensors (spirometer oximeter) through GPIO, (using RS 232, spi. USB is also an option). I have loaded ...
Deepthought's user avatar