Devices disconnecting randomly

Hello there!
I just moved into a new house and setup my network. I use a lot of wireless devices (5 computers, apple tv, sonos speakers, nest) and some bluetooth devices (keyboards, mouse, kevo kwikset) etc.
What happens is that some devices randomly loose internet connection (they are still connected to the wifi, but the internet doesn't work). At the same time however, other devices can connect to the internet just fine. This happens mostly to my Macbook air, iMac and Apple TV. Sometimes it happens to my iPhone too.
I read some troubleshooting forums and basically bumped into a "wireless interference article". It doesn't really help me, since the router is located at a very centralized location and the devices that loose connection are often very close to it.
Is there anything I can change in settings to make this work? Anyone has similar issues?
Thank you!

Settings > General > Reset > Reset Network Settings
Restore the router to default settings and reconfigure.

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Closed-lid mode USB devices disconnect randomly

I just recently connected my MacBook Pro to my Samsung DLP HDTV and started running it in closed-lid mode so my TV is the primary/only display. I also have an external hard drive (USB), external mouse (wireless with USB toggle) and the new Apple bluetooth keyboard.
The problem I have isn't entering the closed-lid mode. But once in closed-lid mode (after a short period of time) all of my USB devices disconnect and then reconnect. I know this because I get an error saying that my hard drive was removed improperly (please eject before disconnecting, etc) and I also get a message from my mouse software saying that my mouse has been disconnected. But then they reconnect themselves (hard drive shows up again on desktop and mouse software informs me that the mouse is present again).
Has anyone had this problem before where USB devices disconnect in the closed-lid mode? I just upgraded to Leopard (formatted the drive and started from scratch). I never tried this within Tiger so I don't have that for a reference. This is really annoying because I have my entire music collection on the external hard drive and it just stops playing when this happens and I have to restore the path to my music collection within iTunes' preferences (it defaults back to ~/Music/iTunes/ when it figures out that the hard drive is no longer there).
The strange thing about this is that when I don't run in closed-lid mode this never happens. I'll be more than happy to provide more details if needed. I greatly appreciate your help.
Thanks!
Mike

i appear to have the same problem under Vista (via Bootcamp) on MBP (2007). i close the lid, and 5-20min later i hear the sound a USB device makes when it disconnects, and a minute or 5 later it reconnects. i don't actually have any USB devices plugged in, but there are several components in the MBP that are connected internally via USB (DVD drive, etc).
what's almost as annoying is that the LCD backlight will come back on of its own accord, even though the MBP's been idle for more than the LCD/backlight time-out period. after the next idle timeout it turns off, only to turn back on againa while later. i see this under OSX & Vista.

All iOS devices disconnecting randomly from D-Link router

Hi,
All my Apple devices disconnect every 10 to 15 minutes from my D-Link DIR-615 router. My Apple TV, 2 iPhones and my iPad always lose the connection. Can't stream anything on my Apple TV, I have to reset the router every 10 minutes. This happens only on Apple/iOS devices. My 3 PCs and my Samsung Galayx device don't have these problems, never disconnect and can stream for hours with no problems.
All my Apple devices are up to date. My router has the latest firmware. I have tried to change the channel and channel width to different settings with no luck.
Any idea on how to solve the problem? Changing my router to an Apple AirPort is not an option. The fact that only Apple devices are concerned is certainly not an accident.
Thanks in advance!

Settings > General > Reset > Reset Network Settings
Restore the router to default settings and reconfigure.

[SOLVED] External USB HDD drive gets disconnected randomly

Hi,
I'm encountering problem with external HDD drive. Recently I've installed a new drive and reinstalled Arch. I use my old disk as external one connected by USB. Unfortunately it get's disconnected randomly. This is what I found in journal:
journalctl
lut 22 17:06:39 t61 kernel: usb 2-1: USB disconnect, device number 2
lut 22 17:06:39 t61 udisksd[346]: Cleaning up mount point /run/media/kuba/ExtStorage (device 8:19 no longer exist)
lut 22 17:06:39 t61 systemd-udevd[165]: error opening USB device 'descriptors' file
lut 22 17:06:39 t61 kernel: Buffer I/O error on dev sdb3, logical block 33062912, lost sync page write
lut 22 17:06:39 t61 kernel: JBD2: Error -5 detected when updating journal superblock for sdb3-8.
lut 22 17:06:39 t61 udisksd[346]: Cleaning up mount point /run/media/kuba/ea5c6a7b-1f73-4527-b99c-29920084bd42 (device 8:17 no longer exist)
lut 22 17:06:39 t61 kernel: Buffer I/O error on dev sdb1, logical block 5275648, lost sync page write
lut 22 17:06:39 t61 kernel: JBD2: Error -5 detected when updating journal superblock for sdb1-8.
lut 22 17:06:40 t61 kernel: usb 2-1: new high-speed USB device number 4 using ehci-pci
uname -a
Linux t61 3.18.6-1-ARCH #1 SMP PREEMPT Sat Feb 7 08:44:05 CET 2015 x86_64 GNU/Linux
smartctl -a /dev/sdb
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.6-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Scorpio Blue Serial ATA
Device Model: WDC WD3200BEVT-00A23T0
Serial Number: WD-WXG1AB002023
LU WWN Device Id: 5 0014ee 2054a2f6c
Firmware Version: 01.01A01
User Capacity: 320,072,933,376 bytes [320 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: 5400 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Sun Feb 22 20:46:13 2015 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 7800) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 93) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x7037) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 1
3 Spin_Up_Time 0x0027 152 147 021 Pre-fail Always - 1375
4 Start_Stop_Count 0x0032 096 096 000 Old_age Always - 4249
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0
9 Power_On_Hours 0x0032 087 087 000 Old_age Always - 9983
10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 096 096 000 Old_age Always - 4032
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 113
193 Load_Cycle_Count 0x0032 162 162 000 Old_age Always - 114798
194 Temperature_Celsius 0x0022 115 096 000 Old_age Always - 28
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 7530 -
# 2 Short offline Aborted by host 90% 7530 -
# 3 Short offline Aborted by host 90% 6969 -
# 4 Short offline Aborted by host 90% 5007 -
# 5 Short offline Completed without error 00% 5006 -
# 6 Short offline Completed without error 00% 3168 -
# 7 Short offline Completed without error 00% 1270 -
# 8 Short offline Completed without error 00% 944 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
So it's like I want to continue watching a movie from external drive and then player crashes because my hard disk partitions got unmounted...
I'm wondering if it can happen because disk is underpowered (it's connected only to one USB port because I lost my original USB cable which had two USB plugs). Anyway it would be strange as problem occurs also when disk is 'idle' so then the power consumption is also lower I assume. I can only say this disk was working just fine when used as internal drive. Any ideas?
Last edited by jakub (2015-02-22 20:08:50)

Your recommendation to check cable was just - a good recommendation I played a little bit with the B connector and disk immediately stopped working. OMG it was so simple ;p Thanks. I have to buy a new cable (I hope the case is all right).
EDIT:
Confirmed with portable mp3 player. Cable (B connector) is damaged.
I just won't delete this thread as it's a perfect example to show that basic stuff and simplest things should be always checked first !
Last edited by jakub (2015-02-22 20:28:26)

M451dn disconnects randomly

Greetings!
I have two printers over here, both M451dn's. One of the M451's will disconnect randomly from the computer. It does not disconnect completely, leaving the M451dn's printer object faded. Instead it creates a new "unknown device" and refuses to function after that. Every time it does this, it displays "HP Web Services" from its menu automatically. The solution (albeit temporary) is to restart the computer or printer, or replug-in the USB cable from either the printer or computer. After that the printer starts printing from the queue in Windows, and functions normally. It only takes a few hours of use for the printer to go back to its old behavior.
I have swapped power and usb cables. Reinstalled the driver, and even plugged the printer directly in to the wall instead of a power strip. Obviously, I could test to see if it is the printer by swapping it for the other functioning printer. But, I wanted to post and see what HP's forum thought first.
Thanks for your help!

These bugs should be related to both 5508 and 4400, pls. see Cisco's software advisory:
http://www.cisco.com/web/software/Wireless/Deferral/Software_Advisory_6_0_196_0.html
You can try both versions to see if the bugs be fixed. If your problem still not fix after upgrade, you have to open debug(debug client xxx) in WLC, use some wireless analyzing tools to capture the packets and check what happened during the disconnection(always remember to use NTP to sync all the related equipments' time). And of course, call Cisco TAC.
Before that, you definately should do some site survey to see if there's any coverage hole, also do some testing especially with simple environment as suggested by George. For example, firstly choose open, no ecryption for the WLAN, no session time out, no aironet extention, no dhcp(using static IP), enable low data rate such 1M/2M, etc. then test it, if problem disappear, then add more parameters towards your final enviroment to see which parameter cause the disconnection. If problem still exist, you need to check Intermec wlan driver, call TAC.

IDEAPAD V460 - USB port disconnects randomly

Hi Community,
I am in a trouble with my IDEAPAD V460, 59 - 044185 (4th one from the beginning) which I purchased around a couple of years back. It was working fine without this annoying issue until recently. This partiular model comes with three USB ports, two on the left side, one on the right side.Since around last 15-20 days, any device plugged into any one of the two USB ports on the left hand side of the laptop is getting disconnected randomly. I use an iBall 4*1 USB hub to connect one keybaord, one mouse and one modem to any one of the USB ports on the left side. Initially I thought it to be a software issue. But reinstalling the OS or even switching over to other OS did not solve the issue. To probe more, I refrained from using the hub and connected two of the mentioned devices directly to the left side ports. Still, the problem persists, but the frequency of disconnection is less. Sometimes, the devices gets reconnected, sometimes do not. That is also in a random fashion.
One of my friend having a Y500 model also having similar issue. As you can understand, given the number of USB devices we use everyday, it's hampering my day-to-day activity.
Two years being passed, I am out of warranty. I found that there are so many people around here also having same or similar issues. Presently, my perception is that those to USB are not being able to pull out enough power to maintain +5V and causing this random disconnect. Any idea what to do?

Hi
Welcome To Lenovo Community
We are really sorry to hear about the issue you are facing,
Please confirm if your experiencing same issue when you connect USB device on right side USB port
Do give this a try and let us know
Hope This Helps
Cheers!!!
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Device Disconnect Sound Plays Sporadically

Hello my Toshiba Satellite L675-57115, Windows 7 (browser Internet explorer 9.0.8112.16421) plays the device disconnect sound randomly while I'm surfing the Internet, with no seemly pattern that I am able to discern. At times the sound will play several times back to back and then it will be a few minutes before it plays again.
I'm not sure if this is related but when insert addresses (in yahoo mail) is clicked it does nothing. It will not go to the addresses. It also will not go to some sites that have addresses within a site when addresses are clicked on. When the address is clicked on it does nothing, but "open in a new tab" will work.
I would appreciate any help/advice from the knowledgeable Toshiba Forum posters.

I have no idea what could cause that, Doc, but if it were me and no problem was being caused, I would right click the speaker icon in the System Tray (AKA Notification Area), click Sounds, select Device Disconnect, click on the down arrow and select None, click Apply and OK out.
C.B.
Toshiba Sat. C75D-B7260 Win 8.1 64 Bit--Toshiba Sat. L775D-S7132 Win 7 HP SP1 64 Bit and Win 10 PRO Technical Preview--Toshiba Sat. L305-S5921 Win Vista SP2 32 Bit

My Airport disconnects randomly when USB disk is attached..HELP NEEDED !!!!

My Airport Extreme disconnects randomly when USB disk is attached, I have searched this forum but found now obvious solution.
The Airport Extreme has the latest firmware.
Since the airdisk solution is quite useless at this time, I would kindly accept any kind of help .....thanks
Sieber

Len61 got my reply, I have copied below.
Hi - I have been on the phone with support 4X since late December - all good calls. They have been scratching their heads on this issue.
I have 2 printers and 2 drives on the airport -recent experieinces = printers have always behaved, drives have appeared / vanished / "drive needs repair" and it's just fine...
Cutting out the interim fixes, here are the simple but important solutions and everything has been stable for days now.
* rolled back to AEBS firmware 7.1.1
* replaced the passive USB hub with a powered hub ** This is when joy arrived
* make sure your drive has a block size of 512
You can run guest mode however you want, since adding the new hub, it hasn't mattered.
I haven't been brave enough to upgrade firmware to 7.2.1
cheers

My second screen disconnects randomly after installing Yosemite. ¿Any suggestion?

My second screen disconnects randomly after installing Yosemite. ¿Any suggestion?

Hello Juanjeli,
Thanks for the question. Based on what you stated, it seems like you are having trouble using an external display. I would recommend that you read this article, it may be able to help you resolve or isolate the issue.
Apple computers: Troubleshooting issues with video on internal or external displays
Thanks for using Apple Support Communities.
Cheers,
Mario

Laptop & PS3 disconnects randomly from 2.0 hub!!

Help to resolve??
why does my laptop and PS3 disconnect randomly from my homehub!! when I had the Orange Home hub for 18 months this never happened??? it also automatically switches to bT Openzone!!!
Hub is no more that 7ft from equipment with direct line of site and also is sited in the same postion as was the Orange Home hub??
any ideas

try downloading and running a program called inssider. this will show all wireless routers in your area and what channel they are using, maywell be someone else on same channel
(If I have helped you in any way to say "Thank You" please click on the star next to the message. Thank You)
If I have solved your Issue please click the "Mark as accepted solution" button.

FireWire400 Drive disconnects randomly - Acomdata 250GB External - Help?

I bought a Acomdata 250GB External hard drive with FireWire400. It has worked beautifully for me for the past week or so. I used it with Time Machine and I also backed up files (movies, music, etc.) onto it which worked pretty well. I never formatted it or anything, just plugged it in and it started working. I use it in Windows sometimes using MacDrive - software which lets you access Mac formatted drives. I do this to transfer my Music to my Windows XP partition (Boot Camp) and things like that. Just recenetly (past 2 days or so) it disconnects randomly even when a file transfer is in progress. If I unplug and replug it, it sometimes fixes it. But other times I need to flip the power switch on/off for it to start up again. I feel like cutting the power like that must be bad for the drive. In my 2 weeks of ownership I never turned it off until I started having the issues, I just would let it spin down when I turn off the computer. I thought it got too hot so I let it sit for a while but I still have issues. I've heard you should totally unhook everthing (Firewire cable, power cable, then take everything out of your laptop (ethernet, Firewire, battery, etc.) and let them sit for like 30 minutes to get all power cycled and stuff. I'll try that now but can anyone throw me a bone? Please?

By the way, now I can't even get Mac to see it. I've turned it on/off, unplugged/replugged, what the crap.

GoFlex drive disconnects randomly after ML install

After installing ML, my 1 TB GoFlex, drive connected via Firewire 800, disconnects randomly and gives me the "The disk was not ejected properly..." error. Then it reconnects immediately. It does this a lot and, like I said, randomly. Has anyone else experienced this problem with an external drive?

Yes, I can't get any external drive (formatted in exFat and over 1TB) to come after installing Mountain Lion. My smaller drives like 250GB etc work fine but anything 1TB or over gets disconnected constantly or doesn't come up at all. I have tried to verify the disk and repair the disk in disk utility but it says it cannot be repaired. But the drive works fine on my Lion laptop..eh

FME disconnects randomly while live encoding

Hello,
when doing a live encode with Flash Media Live Encoder 3 to FMS 3.5, the encoder disconnects randomly after 1 to 8 minutes. It takes about 50 seconds for the encoder to recognize the lost connection, then it re-connects. I tried to encode from different locations, but the problem remains.
Thank you very much for any help.

I suspect the problem with Network connection;
If not tried earlier; can you try running FMS & FME on LAN connected machines or (better) on the same machine; If it works fine that it would just confirm that indeed network connection has some trouble.

Handhelds disconnects randomly

Hi,
We have a 4404 WLC. Handhelds are disconnecting randomly. I am getting :
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin-top:0cm;
mso-para-margin-right:0cm;
mso-para-margin-bottom:10.0pt;
mso-para-margin-left:0cm;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
*Dec 17 14:32:02.151: %DOT1X-3-MAX_EAPOL_KEY_RETRANS: 1x_ptsm.c:407 Max EAPOL-key M3 retransmissions exceeded for client 00:0b:6b:af:1b:as
these logs. I set the EAPOL key timeout ve retries to maximum values but still getting the logs.
We use like 30 handhelds. 7-8 of them disconnects randomly. The handhelds are reconnecting after 15 minutes which is along time for us. I have looked at the handheld logs it retransmits the key and gets timeout. I have tested the field with 3 handhelds while roaming. None of them disconnected but sometimes handhelds disconnects. Maybe this happens on same handhelds. I will look for it.
I have searched the forum but couldn't find any solution. I use agressive load balancing. WPA/WPA PSK for authentication.
Software Version 6.0.196.0
Any trick on handhelds or on WLC side that can be done?
I found this article = http://intermec.custhelp.com/app/answers/detail/a_id/9432
Will try to set these setting on the handhelds. Maybe some of you experience the problem.

These bugs should be related to both 5508 and 4400, pls. see Cisco's software advisory:
http://www.cisco.com/web/software/Wireless/Deferral/Software_Advisory_6_0_196_0.html
You can try both versions to see if the bugs be fixed. If your problem still not fix after upgrade, you have to open debug(debug client xxx) in WLC, use some wireless analyzing tools to capture the packets and check what happened during the disconnection(always remember to use NTP to sync all the related equipments' time). And of course, call Cisco TAC.
Before that, you definately should do some site survey to see if there's any coverage hole, also do some testing especially with simple environment as suggested by George. For example, firstly choose open, no ecryption for the WLAN, no session time out, no aironet extention, no dhcp(using static IP), enable low data rate such 1M/2M, etc. then test it, if problem disappear, then add more parameters towards your final enviroment to see which parameter cause the disconnection. If problem still exist, you need to check Intermec wlan driver, call TAC.

Peripheral device disconnection

Hi,
in a mesh network, temperature sensing peripheral devices are connected directly via ethernet to the mesh access points.
Sometimes, the peripheral device disconnects even when the access point itself is up and running. At this instance, the interface to which it is connected on the access point still remains up. bridging is configured on the access point with required vlan for the device access.
At times, the device returns back to normal by itself , other times it only gets up after reboot of the access point.
please provide some help on this. thanks in advance.

It's call an Airport Extreme…
http://www.apple.com/airportextreme/
… else an Airport Express…
http://www.apple.com/airportexpress/
Be aware that the Airport Express unit will operate at 802.11g speeds which is much slower than the 802.11n speeds of the Extreme units.

Devices disconnecting randomly

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