T530 + WLAN Realtec in Centos 6.5: intermittent connection

Hi,
I have ongoing WLAN problems using Centos 6.5 on my T530 with Realtec miniPCI - it seems not to supported well by its own driver.
The connection interrupts all the time (and enforces a reconnect).
The Realtec miniPCI is: RTL8188CE
The driver (module) is: r8192ce_pci
Is there any change ot get it running or should I better buy an Intel Wifi (e.g. one of the advanced N series)
Does anybody found out another solution on this specfic problem?

DMESG only shows the following after a boot, but I think it is typical:
hv_vmbus: registering driver hyperv_fb
hyperv_fb: Screen resolution: 1152x864, Color depth: 32
Console: switching to colour frame buffer device 144x54
hv_utils: Registering HyperV Utility Driver
hv_vmbus: registering driver hv_util
sd 0:0:0:0: Attached scsi generic sg0 type 0
hv_vmbus: registering driver hv_netvsc
hv_netvsc: hv_netvsc channel opened successfully
hv_netvsc vmbus_0_14: Device MAC 00:15:5d:64:4c:1a link state up
Also I should not that these resets errors do not occur will persistent connections. I can have a SSH session open all day long and not have a problem. I should also say that back when we were on 2012 R1, I do not think this occured either. I would have
to check because between R1 and R2 we moved all with apps to AWS. But decided to bring them back inhouse.

Similar Messages

Intermittent connections to internet with WRT54G

I installed a new unit and I am experiencing intermittent connections to my DSL modem. When the unit quits the WLAN light goes out. I can hit the reset button on the back and the unit will work again for a while. I have also noticed that when I hit the reset button the WLAN light starts dim and then brightens after the reset. Anybody have any suggestions?

I used to have this problem all the time with my old laptop using a PCMCIA card. I discovered that the problem was the version of the driver I was running. The only thing I can suggest would be to make sure you have the latest drivers for all your LAN cardsd, and the latest firmware for the router. I have had no problems since.
-KEiTH

Intermittent connection with netgear1000 and orange, please help

Hi there,
I bought a mbp 2011 and installed orange broadband with netgear1000. I am having intermittent connection, anyone has an idea?
Thanks for the help would be much appreciated.
Lebake

1.with ur laptop wired to the rtr, open IE. in the address bar, type http://192.168.1.1. it will ask for authentication. leave ther username blank and in password type admin.
2.on the setup page, click on the tab wireless and then select manual setup
3.change the w/l n/w name to ur preference, radio band to standard 20 mhz and standard channel to 6 and then save settings.
4. click on subtab w/l security, change the security mode to wep and in the key type any 10 digit no. and make sure this is ur password for the w/l. Then save settings
5.now try to connect to this w/l n/w on ur laptop
6. for ur PS3, go to n/w settings-internet connection settings-custom-and enterv the w/l settings manually.
Linksys Setup CD said "Use Win XP or better"
So i installed Linux

After entering the Wlan password I can't use the „connect" button. The button is deactivated. Did somebody have a solution? I have an iPad 3 with IOS 8.0.2.

After entering the Wlan password I can’t use the „connect“ button. The button is
deactivated. Did somebody have a solution? I have an iPad 3 with IOS 8.0.2.

Your iPhone's iOS must be same or newer than the one in backups. In your case it is older so you need to update your iPhone and then recover it with backup.

Intermittent connection issue

I am having connection issues again as I did 2 years ago. The connection gets dropped intermittently. Sometimes the modem has a red light on the internet indicator and other times the DSL blinks and won't sync. The tech gave me a new modem, but I still have the same problem. 2 years ago the problem got resolved when they switched me to another line. I keep a spreadsheet on the tranceiver stats. The margin dB varies 20.2/21 (down/up) to 8.8/21 to 18.1/29 for instance. Line attenuation stays pretty much the same between 51.4/29 (down/up) to 49.4/29. Tranmit power varies 9.3/11.9 to 15.7/11.9 to 16.2/11.9 (down/up). I cannot seem to get someone to fix the line issues coming to my home. How can I get this fixed?
Craig

No, it is still ongoing. I have a field tech working on it. I was away for some days so couldn't respond. As you know about the intermittant connect problem because of an unconditioned line. Also, I was unable to obtain 1.5Mb/sec connect speed and Verizon only gave me 1.1Mb/sec. This week I am unable to connect at that speed and is now only 0.928Mb. I don't know why this happened, but I can tell you I am unsatified with this connection. I am really unhappy with not being able to get a measly 1.5Mb/sec connection speed when the rest of the world is getting 50Mb/sec or greater speeds.
As a stock holder of Verizon I am even more disappointed in their neglect with the DSL service. I am working on a letter to investor relations on this matter.
Craig

Wireless Problem intermittent connection

Hi,
We have three WLC on our network that runs all at the same time. We experienced intermittent connectivity and all we did was reload the WLC3 to make it normal again. I attached the logs of the three WLC below. Hope someone can help. Thanks!

Well try upgrading the firmware of the router & keep on holding tightly
the reset button in such a way that power light is blinking on the
router & then do a complete network power cycle i.e., unplug the power
cables from the modem & from the router & then plug in the power cable
to the modem first once all the lights are solid green you could plug
in the power cable to the router & check out it will definately work!! & according to your Internet Service Provider configure the router & you should be able to go online wirelessly without any issue.

E1500 -intermittent connection

I have been using this router for about 9 months now and it was great in the beginning. About 3 months back I started experiencing intermittent connection issues with the wireless connection. It slowly degraded over the next few months to the point that the wireless signal can only be obtained about 50% of the time and when connected the speed is all but non-existent. At this point I am forced to use a wired connection to ensure that I have a stable connection. I am so annoyed I am going to hard wire my whole house and switch the router to b/g only for when guests are over to make use of the limited functionality of this router (that is provided that what has been said in other reviews actually works). I can assure Linksys/Cisco of one thing however, this was my first and last purchase of their products.

First of all please verify that you have got a 802.11n card in your computer. New generation routers (i.e. E4200) speaks an entirely different language than 802.11g cards, so while those adapters can work with the E4200 for example, they are not optimized to work with it. It is like having to translate from one language to another in real time when going from N to G... So in those cases the old router will show a stronger signal than the new one.
SECOND, make sure the adapter driver is up to date.
Try to do the following steps:
A] With the help of Cisco Connect Software (if at all you have installed the router with the help of this software)
          1] Open the software and go to the option which says "Router Settings"
          2] Then click on the option which says "Advanced Settings" which will take you to the router's configuration page.
         3] Then go to the Wireless tab, keep network mode as mixed,
For Channel Settings of 2.4 GHz you can make Channel Width to 20 MHz only and Channel to 6, 9, 11..
For Channel Settings of 5 GHz you can make Channel Width to 20 MHz only and Channel to 40 or 161...
B] If you haven't installed Cisco Connect then you can log on to the router's user interface using it's default IP address in the browser which is 192.168.1.1 and type in 'admin' as the password leaving the username field blank. This will take you to the router's web interface and then follow steps as mentioned above to make the changes.

DNS errors + Intermittent Connectivity Help

For the last 5 days my internet has had intermittent connectivity. It is throughout my entire home network of internet access. We have not had any storms or changes to our settings or connections for it to be anything on our network. This issue also happened in the past. Then after X amount of days, it was magically be fixed. When the internet does work, there are no issues and it works fine, which again makes me think it is not on our end and it is Verizon's fault.
When I check the system log of my modem, it has a TON of "DNS request timeouts" or errors saying some other stuff about DNS issues.
My modem/router is Actiontec GT704-WG, I also don't use Wireless internet which is usually related to intermittent connections but that shouldn't be the case.
So is this an issue with Verizon's lines/ servers / connections? Or is it actually something wrong with my network?

It is probably a network issue, but the first step is usually to rule out the local equipment, so restarting the PC and the modem/router is a good starting point.
I have yet to come to encounter an ISP that competently manages their DNS equipment, and you will find a number of Verizon Techs who post here who will tell you to change from the Verizon automatically assigned DNS's to Open DNS.
visit www.opendns.com for detail instructions on how to do so. I changed to open DNS months ago.
So if you still have a problem after you have rebooted the equipment, and changed to OpenDNS, it is almost certainly a Verizon network issue, although convincing Verizon of that can be quite challenging.
Good luck

WRK54G intermittent connections

Hello all!
Have intermittent connection issues with my router.
Have 2 pcs, 1 mac, 2 iphones & 1 laptop on network. Most of the time, the iphones cannot connect. Prior to getting the iPhones, the laptop would drop connection. When laptop was broken & was not being used (for a few weeks), the pc's & mac would lose connection and this would be followed by the "configure" webpage, asking to authenticate password. After 10 minutes or so, could refresh screen and continue surfing. Sometimes, would restart router, and could then reconnect.
This is our second router, the first was experiencing dropped connections & ISP suggested new router. Problem doesn't happen if we remove router from network.
Any suggestions? I've attempted to follow suggestions for WRT54G issues, but nothing seems to have helped. Hubby is about to buy a netgear.
Thanks in advance!

The Internet is dropping on the wired computer or wireless computer ?
If it is dropping on the wireless computer only then try changing the wireless settings on the router. Open the setup page of the router on the wired computer. Go to the wireless tab. Change the SSID and change the channel to 11. Save the settings. Go to the wireless security sub tab. Check the wireless security mode and key of the wireless network.
Click on advanced wireless settings. Change the Beacon interval to 75, RTS threshold to 2307 and Fragmentation threshold to 2306. Save the settings.
Now try to connect to the new wireless network on your wireless computer. See if that works.
If the connection is dropping on wired as well as wireless computer then try to upgrade/ re-flash the Firmware of the router. Download the latest firmware on the wired computer. Open the setup page of the router. Go to Administration tab. Click on Firmware upgrade sub tab. Browse the Firmware file and upgrade the Firmware of the router.

Intermittent connection since FF7

Since FF7 was released, i get really intermittent connection to the browser. That is to say, for instance, a movie stream will abruptly terminate or websites will stop loading altogether. For instance, at random intervals, i'll try to go to google.com and it'll say "connecting" as if im not connected to the internet. But I try in IE and it works just fine. Then I restart the browser by closing all windows and all is well again. What is the issue?
Using Win 7.

I have had that problem ever since 6 came out, 7 did not fix it. So I went back to 5. The moment I went back it was all fixed. I thought it was me, I thought it was my isp. But everything else would work fine, it was JUST Firefox 6 & 7. Take it back to 5. I was lucky enough to still have it stored. You will find it goes away. They need to fix the issue.

WRN300N Intermittent Connection Loss - Wired

I’m running a Linksys WRT300N v1.1 router and am suffering from intermittent connection problems, both on my wired and wireless connected computers. When this occurs, I can’t visit any web sites, and any online games I’m running completely freeze for about 20 seconds. It happens on average once every 20 minutes or so. I’ve tried following the directions on the site for this problem (http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/std_adp.php?p_faqid=4031&lid=3948941746B...) but when I’m trying to get my MTU using the instructions provided I never get a fragmented packet. I’ve started at 1472 and gone down by 10 all the way to 1000 and never got any fragmented packets. If I go up any above 1472 I get fragmented packets, but that would put me at a 1500 MTU, which is the default.
I know the problem is the router because we weren’t experiencing the problem until we changed the router, all other hardware remained the same. I have a friend that had the same problem but was able to fix it using a firmware downgrade, but from what I can see, they've only released 1 version of the firmware for this router.
Anybody have any ideas?

On routers setup page ....uncheck block WAN request .... click save settings ....
Change the wireless channel ....... radio band to 40MHz .....Wide channel to 6 ...Standard Channel 11 ....
Click save settings ...
Also check the firmware version ....

RV320 Intermittent connectivity issues

We have been having intermittent problems with internet (WAN) connectivity on my wife's small business computer network. Connectivity will be fine for a day or so, and then we will have a period of poor and frequently interrupted connectivity. I have our router (a Cisco RV320K9NA) set to send me notifications about problems, and when our internet connection is disrupted, I receive the following notifications from the router:
Mar 28 07:31:11 2015 routeree1df4 Network Log: NSD FAIL WAN[1]
Mar 28 07:32:11 2015 routeree1df4 Network Log: NSD SUCCESS WAN[1]
Mar 28 07:36:05 2015 routeree1df4 Network Log: NSD FAIL WAN[1]
Mar 28 07:39:08 2015 routeree1df4 Network Log: NSD SUCCESS WAN[1]
Mar 28 07:39:48 2015 routeree1df4 Network Log: NSD FAIL WAN[1]
Mar 28 07:40:58 2015 routeree1df4 Network Log: NSD SUCCESS WAN[1]
The above is a sample, there are many more notifications of this type in the log.
Our network configuration is as follows:
Our internet provider's cable modem is connected to our router, which is connected to a Netgear ProSafe 24 port switch. All of our network devices and computers are connected to the switch.
We have tried many things to fix this problem. Our internet provider (Time Warner) has replaced their cable modem. We have replaced our router. My wife increased the speed of our network connection based on usage data from the internet provider. I have replaced the ethernet cable between the router and the cable modem.
We have not been able to reproduce the connectivity problem when we directly connect a laptop to the cable modem, so the internet provider has decided that the issue must be internal to our network and/or router, washing their hands of the whole problem.
I'm technically proficient, but I'm no networking technician, so I'm looking for help and suggestions to fix this problem. Thanks in advance for any suggestions that you can offer.

No, it was wireless. Here is the same test run whilst wired in. I don't understand this though. I wasn't complaining about the speed? I was complaining about the general intermittent connectivity issues we experience, and the regular lack of availability the service provides. Perhaps these are standard tests you have to run beforehand?
The last time I complained about my connectivity issues was in February. If you have access to the ticketing tool, you'll be able to see the nature of my complaint. It was ticket number: VOL051-4263008159178. Something was "done at the exchange" and someone logged onto my HH3 and changed the wireless channel and that "fixed" it. Trouble is, it's been the same ever since. We have a few hours where the connection is stable, then we'll start to get packet losses when trying to connect to sites like Google.co.uk, Bt.com etc etc.
I'm no expert, but this is clearly more than an issue with the wireless channel and some spurious problem at the exchange. This is a continuing nightmare for us which is preventing us from accessing the internet for hours at a time and therefore taking full advantage of the services we pay a lot of money for!

MacBookPro intermittent connectivity with AE/Internet alongside XP/Vista

My family has 3 laptops: 1x Dell (XP), 1x Toshiba (Vista) and MacBook Pro (OSX10.5.6) using my home wireless network: Airport Express connected to VirginMedia Router to internet. Only Mac has intermittent problems:
- All 3 laptops individually have no problems connecting to internet;
- All 3 can simultaneously be on the internet streaming online media;
- However, only Mac has intermittent connection problems;
- The XP/Vista laptops connectivity is faultless, unaffected when Mac is first connected to or using the AE/internet;
- If my Mac is already connected to AE/internet, then connecting XP/Vista laptop will interrupt Mac connection;
- Turning the Airport-client off/on sometimes temporarily re-connects, or once in a while Mac auto-connects for a few mins, but reconnection is not maintained for more than a few minutes, whether internet in use or not;
- Mac alone will remain on internet happily indefinitely if neither XP/Vista laptop are connected;
- I have tried fixes suggested in the forums, such as renewing/lengthening DHCP lease, using DHCP and hard IP addresses, different AE wireless frequencies, removing wireless phones, updating Airport software to latest, turning IPv6 off, etc.
- This issue arises even when all 3 laptops are used in same room, less than 10m line-of-sight from AE.
Any ideas how I can force my Mac to stay connected to AE/Internet and not let my XP/Vista family members win the contest of reliable connectivity?
Yours, the embarassed of the family.

Thanks for the first two replies.
1. Norton and AVG antivirus ran last night.   No problems. Spybot also was run.   So I don't think the problem is related to Arun's ideas.
2. I have a MI424WR Verizon router.   The WAN light is on solid green, all the time. The Internet light flashes.
The router is fed by coax.
I dont know what bit torrent is.   Computer 2 is only used for Pogo on line simple stupid gaming (I am whining about wife's activities).   My Computer 1 is only used for ebay and simple web activities.
I tried resetting the router once today...helped nothing.
Just now I could not get connected via shortcuts.   BUT---I can always get on line through Outlook Express. And I got here via an email link.
go figure

For those of you having intermittent connection to the internet

If you have a linksys router and having intermittent connection to the internet, here's how.
Be sure to have a LAN cable plug into your router and macbook.
(This is very important if you do not want to get disconnected from the router)
1) Navigate to http://192.168.1.1
2) Go to the Wireless tab, under the Advance Wireless Settings tab, change the beacon interval to 50, RTS to 2304 and Fragmention to 2305, save the settings.
3) When you login into your router page, it first direct you to the setup page, look under MTU, set it to 1300. save it.
Note that if you are still having intermittent connection to the internet, another alternative is setting your MTU to 1365.
That's it, 3 easy steps to get you freed from the frustration.
Cheers for all those having the same problem like me solved.

Hi,
I dunno if this will help any of you, but here it comes:
I purchased the Airport 'N' enabler just a week before I upgraded to OSX 10.4.10. And - of course - after the OS update I had the similar issue with dropping Wifi connections and very slow speed, although (*Touch Wood*) I didn't have any Kernel Panics.
After updating to OS 10.4.10, System Profiler and Network Utility showed that I had the 'n' enabled, but the speed and (lack of) stability of the Wifi connection can only be described as 'Hair-ripping'.
Anyway, after reading through all the threads/topics of all you poor sods with similar problems and utilising somewhat 'hairy' workarounds with varying results, I realized that nobody acually tried to re-install the 'N'-enabler again; at least as far as I recall..
So, I simply installed the 'N'-enabler again AFTER updating to 10.4.10 !!! I was kind of expecting the installer to prompt me, saying that "this computer already has Airport Extreme 'N'-enabler installed" blah-blah.., but it didn't.
And now I have a very stable connection and MUCH faster download speeds as well !
So those of you who hasn't tried this yet, please do. It might work for you as well ... !!
Just me 2 cents

Intermittent connectivity issues

So I had a Motorola SB 6120 modem working for over 4 years with Comcast and all of the sudden I start getting intermittent connectivity issues at night (it could be during the day as well, but I am actively working and doing school work at night). The issue comes and goes. I call Comcast and they swear up and down its my modem - which I dont believe since Im the connectivity issues are not fixed by resseting it, just waiting it out. I go ahead and get a new modem (SB6141) and router - spending over $200 and guess what - still having the identical issue. I call in and the support person states that as far as the modem goes everything is fine but the signal is dropping (same issue, two different conclusions after a good amount of arguing on my end and $200 I wont see back). So I tech comes back but I have to be at work and leave my wife and brother in law at home to make sure he comes by. When I get home apparently the tech had stated that "the modem was not correctly registered". That means that my other modem wasnt? And that an uncorrectly registered modem works from time to time? ... Really? So I try to do a live chat since again, I have to work and cant waste my entire day waititing for comcast to fess up and admit their service is the issue. And here is the part of the conversation in which I basically gave up hope on getting anywhere:Akemi: Sometimes if your modem is plugged to Comcast outlet you should be also receiving inetrnet signals, but then becasue if it is not properly registered you will be expriencing intermittent connection.----------------------------------------------------------MARCOS: ok, let me see if i can get itMARCOS: meanwhile, can u tell me how my modem may have been "incorrectly registered" and still working for over 30 daysAkemi: Much appreciated, thank you so much.MARCOS: and how that can be the cause of intermittent issues - since it seems like a lieAkemi: Sometimes if your modem is plugged to Comcast outlet you should be also receiving inetrnet signals, but then becasue if it is not properly registered you will be expriencing intermittent connection.MARCOS: that makes no sense. that modem was not working WHATSOEVER until I called. the modem shouold have been blocked by the MAC addressMARCOS: should*MARCOS: otherwise any1 can get comcast tv, plug in a router from best buy and have internetAkemi: Thanks for the info.---------------------------------------------------------Can someone help? Am I missing something?

Start here: http://forums.xfinity.com/t5/Basic-Internet-Connectivity-And/Connection-Troubleshooting-Tips/m-p/1253575#U1253575

T530 + WLAN Realtec in Centos 6.5: intermittent connection

Similar Messages

Maybe you are looking for