Wifi problems after standby T43

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tumed · #1 Post by **tumed** » Sat Jun 04, 2005 11:58 am

If I close the lid of my T43 (and it goes to standby), upon opening the lid, my computer reconnects to my wireless server, and everything appears fine. The problem is that it doesn't work. I can't check e-mail, go online, etc. But everything seems to be in working order. It says I'm connected (indicated by the three icons: IBM access connections, Intel wireless, and the windows wireless network monitor). I try to repair the connection, and it doesn't fix the problem. If I test the connection using the IBM access connection, it says that I may have a firewall issue. If I turn off my firewall and try to connect again, it doesn't solve the problem (again I appear to be connected but still cannot access the internet). Please help! It drives me crazy. I want to be able to have my computer in standby, and expect it to work properly when I wake it up...otherwise I have to keep restarting (which seems to solve the problem...even with the firewall up).
Thanks! M

JHaislet · #2 Post by **JHaislet** » Sat Jun 04, 2005 12:06 pm

If your using DCHP, make sure your getting a REAL IP address. If you've got a small home network, it will probably look something like 192.168.x.x or maybe 10.10.x.x. If your machine displays an IP address like 169.x.x.x, that means that Windows couldn't communicate with the DHCP server, and thus assigned itself an internal address (which does NOT allow you to get on the internet).

You can check all your network connections, including IP address by going to:
Start>Run>type in "cmd", hit enter>type in "ipconfig /all" hit enter.

tumed · #3 Post by **tumed** » Sat Jun 04, 2005 12:30 pm

My IP address is of the form 192.168.x.x

roast · #4 Post by **roast** » Sat Jun 04, 2005 12:39 pm

Have you tried disabling and reenabling the wireless adapter from network connections from windows? (It's in the control panel, or right click network places and go to properties)

tumed · #5 Post by **tumed** » Sat Jun 04, 2005 5:19 pm

Yes, I have tried disabling it. It doesn't help. Basically no matter what I've tried in terms of changing settings, and disabling, enabling, etc doesn't work. The only thing that works is to restart.

rpd05 · #6 Post by **rpd05** » Sat Jun 04, 2005 6:42 pm

Do you have more than one user logged in with fast user switching?
I've had similar problems if more than one user is logged in.

jmt · #7 Post by **jmt** » Sat Jun 04, 2005 7:07 pm

I have a new T-42 and X-40. I do not have that problem on mt T-42 but I do on my X-40. Very annoying. I also would be interested in a fix, as that also as alluded me thus far

tumed · #8 Post by **tumed** » Sat Jun 04, 2005 9:15 pm

I don't have multiple users logged on. I only have one user set up.
Thanks. M

rssb · #9 Post by **rssb** » Sun Jun 05, 2005 9:33 am

tumed i face similar problems with my ibm a/b/g card after restoring a session from suspend mode.

Most of the times, even though i have a connection and i get a 192.168.*.* ip address with both ipconfig and ibm access connections,
if i press Fn+F5 and reconnect to my location profile it works.

But yes there have been times when i had to restart the machine. I have a belkin router ( which is not very good when compared to others like linksys). I felt it was more of an issue with the router than the actual machine and the configuration itself. The router seems to be slow in certain functions , for example if i am logged in as admin into the router and for some reason i get disconnected and get a new ip, it still says that my old ip is logged in as admin and hence i cannot connect to it !!.

tumed · #10 Post by **tumed** » Sun Jun 05, 2005 10:38 am

I tried using Fn+F5, but it didn't fix the problem (it said it couldn't obtain an IP address, and then I was no longer "connected" as I had been, with no internet access).

cytexone · #11 Post by **cytexone** » Sun Jun 05, 2005 1:32 pm

out of curiousity, are you using Access Connections or Windows to configure your wireless device?

Access Connections is truly a beast of a network device manager (in a good way) in it's persistance to successfully connect your laptop to some type (wireless/wired/switch dynamically b/t the two)

Windows is good, and not as persistent, IMHO, especially when you have multiple locations you are managing...

So... which are you using?

Andy
CYTEXONE

bdoviack · #12 Post by **bdoviack** » Mon Jun 06, 2005 12:15 am

I had this exact same problem and fixed the problem by re-installing the driver that was provided by IBM. Cisco (my card) had released a newer driver but after I installed it, I had the problems you describe.

Try uninstalling and then re-installing the driver and see if that fixes things.

#13 Post by **GomJabbar** » Tue Jun 07, 2005 7:28 am

I have a T-42 with the Intel 2200 BG wireless option. I've had WiFi problems after going into standby or even after leaving the laptop inactive for a period of time. Originally I was using the factory installed driver version 8. I checked on Intel's website and discovered they had a version 9 driver for this adapter. I downloaded and installed this driver - then I had very few problems with my home wireless connection, however the Fn + F5 key combination would no longer work (I had also started using Intel's wireless manager at this point - if I recall, Access Connections would not work with this driver).

A couple of months later, IBM had a version 9 driver, along with a newer version of Access Connections, so I downloaded and installed these. This did seem to work better than the original IBM drivers, but I still was having some problems. Finally I discovered that if I manually input my IP address, Subnet Mask, Default Gateway, and DNS servers, I almost never lost my connection. I found this information from viewing the TCP/IP tab while online. I also found out that the wired (ethernet) computers on the router always took the lowest IP addresses. I chose an IP address that was above any that the wired computers would use. The second laptop that I use with this router is set up the same way, but with a different IP address.

I hope this helps.

krosenstein · #14 Post by **krosenstein** » Tue Jun 07, 2005 8:03 pm

Even though Access Connections says you're connected, you're not. All you have to do is rescan and reconnect.

I don't have any idea why the connection has broken when the machine comes out of standby, but the remedy seems easier than trying to find out the cause.

tumed · #15 Post by **tumed** » Wed Jun 08, 2005 5:40 pm

Rescanning and reconnecting does not fix the problem. I reconnect but continue to still not have access to the internet or e-mail.

#16 Post by **GomJabbar** » Wed Jun 08, 2005 7:25 pm

To elaborate on my previous post: Although I am no networking expert, I believe what's happening is that when the laptop comes out of standby, it tries to renew its IP address. The router already has an IP address registered for this laptop, and will not reissue an IP address. If you have the IP address set manually, the laptop will not ask the router for an IP address, so this no longer becomes an issue. To differentiate between different computers attached to the same router, the last 3 digits of the IP address are different for each computer. On my SMC router these last 3 digits would be 100, 101, 102, 103, etc. (routers allow a range of IP addresses and you need to be in the range available). So if you manually set up an IP address, you need to have different IP addresses for each computer attached. Since I've never had a problem with ethernet wired connections to the router, I let the adapter set these IP addresses automatically. I reserve the lowest numbers: 100, 101, 102, etc. for any computers or adapters that I might connect by ethernet. On my laptop (as most nowdays) I have both an ethernet connection and a wireless connection, and depending on circumstances, I might use either one. So I reserve a low IP address for the ethernet connection - which I let the adapter set automatically, and use a higher IP address for the wireless connection - one I set manually. Note: you may have to power-off the router, then power it back on after setting IP addresses manually on the laptop. Then try establishing your wireless connection.

a_d_y_a · #17 Post by **a_d_y_a** » Fri Jun 10, 2005 3:14 pm

I am facing the same problem.
Anyone with any feasible solution for the IBM atheros card?

Roy_W · #18 Post by **Roy_W** » Fri Jun 10, 2005 4:22 pm

Rather than set an address manually, stay with the the DHCP solution.
After setting the DHCP to ON on both your adapter and your Thinkpad try the following from the command line afer a Standby

"arp -d *"

followed by a

"ipconfig /renew"

If this fails try a

"tracert 194.2.0.20"

in order to determine where the network problem is falling down.

Does the same problem also arise when using a different Wifi gateway/router/access point?

Wifi problems after standby T43

Wifi problems after standby T43

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