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Why Sys-Admins Are Disabling The Lights on WiFi Access Points (networkworld.com)

More than a dozen IT professionals said they've disabled the LEDs on wireless access points, according to a Network World article shared by Slashdot reader alphadogg: Some users don't want a beacon shining in their eyes as they try to get to sleep and others worry about the health effects of a blue light glowing all night. Some even resort to unplugging the gear when they're not using it.... "It seems when you are sick and laying in a hospital bed and have trouble sleeping, the single LED shining in your eyes is an issue," [says the wireless network staff specialist for Penn State College of Medicine]. "I get it and understand it..."

Network pros say they have begun asking vendors such as Cisco if they can provide an easier way to dim, rather than turn off the lights on the access points entirely, via wireless controllers. And some would like to see more granular control, such that the power light could be left on to comfort end users that the device is working, but blinking lights could be turned off or dimmed to avoid bothering them.

End users have tried "all sorts of makeshift fixes -- from Post-it notes to bandages to condom wrappers," but one network architect complains that when they disable the LEDs altogether, "I invariably get a ticket (or more) that the access point is offline and wireless is broken because there are no lights on..." On the plus side, when they then re-enable the LED lghts, "magically the wireless performance and coverage is perfect!"

37 of 294 comments (clear)

  1. Old school reflective lcd by jellomizer · · Score: 5, Insightful

    Why can't we get a strip ok old school lcd like in the digital watch of the 1980.
    It can show the info without the light.

    --
    If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    1. Re: Old school reflective lcd by jellomizer · · Score: 3, Interesting

      There is a problem. You can solve it or ignore it.
      The light bothers some people however the light indicated useful info. Switching from led lights to an lcd strip can be an affordable solution to fix both problems.
      You can ignore the problem but the problem still exists. Sure it doesn't bother people enough to speak so if they are at the hospital and filling mizerable that blue LED may be annoying but they are experiencing far more annoying things. However it absence will just help the person out a little more get that extra 20 minutes of sleep.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    2. Re: Old school reflective lcd by Rockets84 · · Score: 5, Informative

      I'm one of those sys-admins who's asked for dimming to be added to the Cisco WLC software. About 18 months ago I had a brain tumour about the size of a small orange removed. I've had a number of stays in hospital rooms since with Cisco WAP's in them. I can assure you that the LED's on those WAP's when you're trying to get to sleep are annoying as hell as they light up the whole damn room.

    3. Re:Old school reflective lcd by wolrahnaes · · Score: 3, Informative

      Make it e-paper, not LCD, then it will be readable under any light. If e-paper displays are cheap enough to put on store shelves as price tags, then they should be cheap enough to serve as a status display on a router.

      E-paper would be a terrible display for this purpose. It can't change fast enough to work as an activity light, and since it maintains an image effectively forever until updated it's not trustworthy for lower rate status monitoring like power on. If the device crashed or even powered off entirely without resetting the display first it'd look normal at a glance.

      --
      I used to get high on life, but I developed a tolerance. Now I need something stronger.
    4. Re: Old school reflective lcd by itsenrique · · Score: 2

      So because you say there is nothing wrong with them, there isn't huh?

    5. Re: Old school reflective lcd by cruff · · Score: 3, Informative

      ... or mounted with LEDs facing away from people: not in a location where the LEDs will be visible from a sleeping area.

      I've been bothered by the LED on my cordless toothbrush flashing during its charge cycle, even while the (green) LED was facing away from my bed directed at a light colored wall. My master bath has an outlet that is only energized when the light fixture is on, so I either have to charge it in the bedroom during the day or take it into another room if it needs to be charged overnight. The blue lights from my workstation in another room are clearly visible at night in my bedroom if the doors to the rooms are open. Like others have mentioned, I've resorted to using colored vinyl tape to cover the overly bright LEDs on things to reduce the intensity to something reasonable.

    6. Re: Old school reflective lcd by Hognoxious · · Score: 3, Interesting

      Have you actually tried this? I've got a case fan with them and I tried multiple layers of different kinds of tape and they're still shining through.

      The darn things aren't recessed either so there's not much clearance to stick a big blob over them without fouling the fan. Plus they glow on both sides, which is an issue because the case is one of those 733t ones with a window in it. I suppose I could fit it with blinds.

      I will add that I can't actually find one of the side panels now. I was installing a new HDD and toying with changing the heatsink. How I can lose something that's half a yard square is a mystery. Should probably tidy up the lab...

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    7. Re: Old school reflective lcd by HBI · · Score: 2

      Having brain cancer cannot have been fun, but being able to tell people you've had a fruit-sized chunk of brain removed...must be great in conversation.

      Glad you came out the other end.

      --
      HBI's Law: Frequency of calling others Nazis is directly correlated with the likelihood of the accuser being Communist.
    8. Re: Old school reflective lcd by ColdWetDog · · Score: 2

      Jeez you guys. Just duct tape the things. Nothing gets through two layers of duct tape.

      --
      Faster! Faster! Faster would be better!
    9. Re: Old school reflective lcd by drinkypoo · · Score: 4, Funny

      being able to tell people you've had a fruit-sized chunk of brain removed...must be great in conversation.
      Glad you came out the other end.

      Holy shit! That's one crappy way to go in for brain surgery.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    10. Re: Old school reflective lcd by Zxern · · Score: 2

      If it's just a case fan, take it out and cut the leds off.

    11. Re: Old school reflective lcd by Zxern · · Score: 2

      Equally valid is using a dark red or amber led instead of superbright blue led's.

    12. Re:Old school reflective lcd by clovis · · Score: 4, Funny

      Why can't we get a strip ok old school lcd like in the digital watch of the 1980.
      It can show the info without the light.

      Nope.
      What these devices need are nixie tubes to show you the contents of the instruction counter so you'll know if the router is running correctly or not.

    13. Re: Old school reflective lcd by TWX · · Score: 4, Informative

      a WAP is a workspace device, like a computer or TV. It cannot be concealed in wiring closet that may be as much as 300 feet away and still hope to serve the area it's needed for. Hell, I have some buildings where two floors are served by one IDF and there are close to a hundred WAPs patched.

      Modern Cisco WAPs have annoyingly bright LEDs on the workspace-facing side. I have three 3602e WAPs that I use for my home learning lab and home wifi, and I have disabled the LEDs on one and probably will on another. An option to either dim or to disable the blue color when not in a fault state would prevent having to do that.

      --
      Do not look into laser with remaining eye.
    14. Re: Old school reflective lcd by fahrbot-bot · · Score: 3, Informative

      I've had good success using a black Sharpie (permanent marker) to "dim" the output by coloring all over the bulb.

      --
      It must have been something you assimilated. . . .
    15. Re:Old school reflective lcd by arth1 · · Score: 2

      Duck tape is for waterproofing. You want gaffer tape, which is made to stop light, be non-reflective, and removable.

    16. Re: Old school reflective lcd by dotgain · · Score: 2

      Marriage tip: Just be a good fella and sort the damn LEDs out, eh? She's probably not making it all up.

    17. Re: Old school reflective lcd by pnutjam · · Score: 2

      Yeah, calling your wife a liar doesn't work out well. My Mom used to complain that she didn't like the off brand cheerios, so my Dad put off brand cheerios in a regular Cheerios box because he didn't believe she could taste the difference, she could...
      This cautionary tale has been passed down to me and I now share it with you.

    18. Re: Old school reflective lcd by obscuro · · Score: 2

      If the case isn't near a desk you will find your case cover slid betwee the two pieces of furniture that are closest together. If it is close to a desk, it will be slid under the desk standing on edge like a book. If a giant stack of junk had to be moved to get at the case the probability of finding it under the stack is dirctly proportional to the size of a stack. If it's a university science lab, someone else already found it and it's the base of that thing across the room covered in bolts next to an empty bottle of Locktite. I hope this helps... ;)

      --
      Every rule has more than one consequence.
  2. Um by dreamchaser · · Score: 2, Informative

    This is newsworthy? Slashdot continues to decline with each transition to a new owner. It's literally become a clickbait site.

    1. Re:Um by waveclaw · · Score: 4, Insightful
      Is the problem of cheap blue LEDs News worthy? The conversation certainly is. News can inform but need not always be just current events, particularly on the Internet where nothing is paper.

      Slashdot is a news aggregation site. Ostensibly for 'News for nerds, stuff that matters' at founding. In practice is was a blog for Rob Malda, CmdrTaco. It was also a website with an accidentally really good commenting technology.

      Been around long enough to see the jokes about not reading the article? Then you have probably been around long enough to see the argument that a lot of the people still visiting the site do so for the conversation in the articles. They provide everything from group-think arguments, good counter-arguments and funny jokes about the topic to warnings about click-bait, pay-wall free options and corrected sources.

      If Slashdot had ever depended upon the quality of the articles it would have failed when it was still Chips-n-Dips hosted on a university student account. The commenting system is more than a chance to keep up your HTML skillz. People in the know are really providing the value. (Queue complaints about Facebook's model, etc.) However, getting quality articles is important to attracting the readership that does not know about the site.

      For instance, this article currently doesn't shows up in Google search for annoying LEDs, being a day old. But the top link is for lifehacks.stackexchange.com for whatever reason. Stackechange and Amazon dominate the front page. I almost feel sorry for companies with products on that page. Even with no such thing as bad marketing, being known for having annoying lights on your non-party-joke product is not a good thing.

      The Blue LED backlash article on McConnell's blog is page three. And he discusses a vendor that sells low intensity LEDs for computer products. But I expect - or at least hope - this slashdot article to make it to at least page three with McConnell's blog if not higher.

      --

      "You cannot have a General Will unless you have shared experiences. You cannot be fair to people you don't know."
  3. Good ole ink by Mr+D+from+63 · · Score: 4, Interesting

    I just use a black marker to darken the surface. You can essentially black them out or leave a little light passing through.

    1. Re:Good ole ink by guruevi · · Score: 2

      I use OpenWRT - you can reprogram any LED on your router for whatever purpose. Want them all on or off at a certain time of day or blink if it detected anomalous traffic.

      --
      Custom electronics and digital signage for your business: www.evcircuits.com
  4. Slow news day? by wonkey_monkey · · Score: 4, Informative

    So, it has come to this. An article on Slashdot about covering up blinking lights.

    one network architect complains that when they disable the LEDs altogether, "I invariably get a ticket (or more) that the access point is offline and wireless is broken because there are no lights on..."

    Then cover them with black masking tape. Voila, no lights. Plus, everyone can see why there are no lights, so they won't be psychologically fooled into thinking the thing isn't working. And if there really is a problem, they can peel back the tape and have a look.

    Bloody hell...

    --
    systemd is Roko's Basilisk.
    1. Re:Slow news day? by itsdapead · · Score: 4, Insightful

      So, it has come to this. An article on Slashdot about covering up blinking lights.

      Blinking lights were great before some bright spark invented those bloody ultra-bright blue and white LEDs and electrical equipment designers started indulging their fantasies of making their devices look like the mothership in Close Encounters, right down to the sunburn. Meanwhile, us slashdotters are getting older and starting to feel the effects of decades of staring at flickery screens...

      Seriously guys, if the status light is casting visible shadows then its just out-and-out sloppy design. I've even had this on a HP monitor: ridiculous dazzling blue power light on the front of a monitor, with option to disable the light (so obviously people have complained) ...meaning you can't tell if the monitor is switched on at all.

      And, yeah, I thank god for those little stand-up cards in hotel rooms saying "Here at PlasticHotelCorp we passionately believe that inane motivational slogans are a great substitute for actual quality" which are ideal for standing in front of the various TVs, clocks and other power lights opposite the bed.

      --
      In a survey of 100 programmers, 111111 thought that duck-typing was a good idea.
  5. Some routers already have dimmable LEDs by beda · · Score: 2

    Have a look at Turris Omnia - the LEDs are dimmable in 8 steps, the last one being completely off.

  6. Dim based on light conditions by Anonymous Coward · · Score: 3, Insightful

    They should add light sensor and dim based on that. iPhone display does that btw.

  7. Has slashdot hit rock bottom? by burtosis · · Score: 5, Funny

    I've been reading slashdot for years and I've never seen a story about blinking lights and not much else.

    1. Re:Has slashdot hit rock bottom? by evilviper · · Score: 2

      Wait a little while and they'll post a fresh new /. story about cell phone signals being used to track traffic patterns

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
  8. Re:Sounds like author hasn't been sick enough by plsuh · · Score: 2

    "It seems when you are sick and laying in a hospital bed and have trouble sleeping, the single LED shining in your eyes is an issue,"

    A LED shining in your eyes is the LEAST of your worries when trying to get to sleep in a hospital.

    Actually, it IS a big deal. Sleep is important to a patient's recovery, and a lack of good sleep can slow healing.

    Patients in a hospital are constantly being disturbed at night due to vital signs checks, administration of medication, pain medication wearing off, etc. Sometimes the disturbance is not even for the patient but for the other patient in the same semi-private room. Falling asleep is difficult enough; getting back to sleep can be worse. Lots of strongly glowing and flashing LEDs and other indicators can make it darn near impossible, especially if the patient is already in pain and having to lie in an uncomfortable position.

    Imagine you were trying to sleep in the middle of Times Square at night, with all of the lights and noise. That's what it's like. As IT professionals we can at least cut down on the lights and beeps, even if we can't do anything about the other disturbances.

  9. Re:Why is this even a thing? by kruug · · Score: 2

    Ideally, these wouldn't be put in hospital rooms or hotel rooms, but out in the hallways and common areas. Sounds more like bad infrastructure management.

  10. Lights in general by yurikhan · · Score: 2

    The problem is not limited to access points. Power strips, monitors, speakers, keyboards, mice — everything has a LED.

    Some devices have options to turn off the LED when working, but insist on blinking said LED when in standby. Good luck turning your monitor to face the wall so that its blinking LED doesn’t disturb your sleep.

  11. Re:Taking the electrical engineering route to the by ColdWetDog · · Score: 2

    If they were that concerned about the led's and wanted to do something about them, assuming the device was no longer under warranty, why didn't they just trace the node that the led is connected to and simply bypass the smt resistor by removing it, taking a small guage solid wire, soldering it to the resistor and installing a 5kohm potentiometer that they could mount to a circuit board that can be fastened down using one or two screws, washers and nuts to the casing, with the pot knob exposed outward so that they can install a pot knob cover. All the job needs is a esd safe soldering station, a small hand drill or electric drill, and access to digikey.

    Try that in a hospital and Bioengineering (or whatever they call the folks that are tasked with fixing things with batteries and / or power cords) will be on you like a ton of bricks. No mods! No kinks! No tape! You leave it ** alone ** or something Very Bad could possibly happen and we don't want that, do we?

    Hell, I can give our guys the willies by walking around with some zip ties.

    --
    Faster! Faster! Faster would be better!
  12. More than a Dozen! by Bing+Tsher+E · · Score: 2

    More than a Dozen sys-admins (we used to call them computer operators in the 80's) have put black electrical tape over some LEDs.

    Definitely worthy of an article on Slashdot.

    We should discuss the relative merits of different varieties of black electrical tape. It's called 'bush league' in Horowitz & Hill and I agree. But that's topic drift, and we mustn't have that, because this is an IMPORTANT and interesting discussion of sys-admins (we used to call them computer operators) covering up the LED indicators on equipment.

  13. Blinking and beeping by kbg · · Score: 2

    Oh, cut the bleeding heart crap, will ya? We've all got our switches, lights, and knobs to deal with, Striker. I mean, down here there are literally hundreds and thousands of blinking, beeping, and flashing lights, blinking and beeping and flashing - they're *flashing* and they're *beeping*. I can't stand it anymore! They're *blinking* and *beeping* and *flashing*! Why doesn't somebody pull the plug!

  14. Re:Sounds like author hasn't been sick enough by Dunbal · · Score: 2

    As both a physician who has worked for years in hospitals, as well as a patient who has spent MONTHS in intensive care, and months on a regular ward because I've been really sick and close to death several times myself (was actually dead once for a couple minutes), I will re-iterate my statement. If an LED is all you can complain about, you've not been in hospital long enough. Your points are valid but irrelevant. A LED pales in comparison to - staff talking loudly, carts rattling down the hallway, other patients (or their family) making noise, blood pressure cuffs inflating every 10-15 mins or so even when no longer necessary, monitors starting to beep if you change position and happen to pinch your IV line or decrease the blood flow to the finger your pulse oximeter is attached to, phlebotomists coming at all hours to draw blood, nursing staff pausing outside your door or by your bed handing off to the next shift, doctors doing the same, etc etc etc. You can't sleep at a hospital, period. I really don't notice the LED at all. Every little bit helps, but don't think you're saving the world if you eliminate a LED.

    --
    Seven puppies were harmed during the making of this post.
  15. Re:Does anyone make tinting tape? by Dagger2 · · Score: 3, Informative

    Not quite a roll of tape, but check out LightDims. You get one set of stickers that dim "50-80%" (or rather three sets, in black, silver and white) and another set that, as far as I can tell, are completely opaque.

    They only really stick on flat surfaces, but they look better than using a random bit of tape, and the opaque ones really are opaque.