Network connection lost after sleep

[Roger K]

My Sony laptop with Vista HP is connected to a cable modem via its network
card and CAT5 cable. The connection works OK until the laptop goes to
sleep. When it wakes it has lost the network connection and I have to reboot
it to go online. When the connection is there, the system tray icon says
"Currently connected to Network 2, Access: Local and Internet". After
waking from sleep the icon says "Currently connected to unidentified
network, Access: Local only". The same modem and cable work fine on my XP
desktop.

I have tried going into Device Manager, right-clicking on the network card
and unchecking "Allow the computer to turn off this device to save power"
but it made no difference.

I've tried updating the driver for the network card but Vista says it is up
to date.

I've tried two MS fixes - kb928233 which involves some manual reg tweaks and
kb933872 which was a downloaded update.

I've tried ipconfig /release - ipconfig/renew from a command prompt.

I've tried running "Diagnose and repair" from the Systray icon but it failed
every time. I've also tried disable/enable Local Area Network from Control
Panel > Network & Sharing Center > Manage Network Connections.

I'd be grateful for any ideas - apart from going back to XP, waiting for
Vista SP1 or trying Linux - none of those are bad but I've already thought
of them!

 

[Lefty39]

My Sony laptop with Vista HP is connected to a cable modem via its network
card and CAT5 cable. The connection works OK until the laptop goes to
sleep. When it wakes it has lost the network connection and I have to reboot
it to go online. When the connection is there, the system tray icon says
"Currently connected to Network 2, Access: Local and Internet". After
waking from sleep the icon says "Currently connected to unidentified
network, Access: Local only". The same modem and cable work fine on my XP
desktop.

I have tried going into Device Manager, right-clicking on the network card
and unchecking "Allow the computer to turn off this device to save power"
but it made no difference.

I've tried updating the driver for the network card but Vista says it is up
to date.

I've tried two MS fixes - kb928233 which involves some manual reg tweaks and
kb933872 which was a downloaded update.

I've tried ipconfig /release - ipconfig/renew from a command prompt.

I've tried running "Diagnose and repair" from the Systray icon but it failed
every time. I've also tried disable/enable Local Area Network from Control
Panel > Network & Sharing Center > Manage Network Connections.

I'd be grateful for any ideas - apart from going back to XP, waiting for
Vista SP1 or trying Linux - none of those are bad but I've already thought
of them!

It's hardly a solution but one work-around might be to buy an
inexpensive router and connect to the Internet through the router
(which you would hard wire to your broadband modem). Then you could
connect to the router through either a USB or Ethernet cable. Your
Internet connection wouldn't be affected by the state (or even the
presence) of your laptop.

 

[Roger K]

It's hardly a solution but one work-around might be to buy an
inexpensive router and connect to the Internet through the router
(which you would hard wire to your broadband modem). Then you could
connect to the router through either a USB or Ethernet cable. Your
Internet connection wouldn't be affected by the state (or even the
presence) of your laptop.

I'm expecting to get Linksys router in the next day or so. I intend to
connect my XP desktop to the router via CAT5 cable and have the Vista laptop
on line via its 802.11/g wireless card. However I was trying first to get
the laptop working correctly on its own via a cable to the modem, and I'm
little concerned that if the laptop's sleep mode drops the cable connection
then it will very likely also drop its wireless connection. It's working
well in all respects and as this snag is probably just a Vista problem I
thought it would be worth asking whether anyone else has seen it.

 

[KW]

I'm expecting to get Linksys router in the next day or so. I intend to

connect my XP desktop to the router via CAT5 cable and have the Vista laptop
on line via its 802.11/g wireless card. However I was trying first to get
the laptop working correctly on its own via a cable to the modem, and I'm
little concerned that if the laptop's sleep mode drops the cable connection
then it will very likely also drop its wireless connection. It's working
well in all respects and as this snag is probably just a Vista problem I
thought it would be worth asking whether anyone else has seen it.- Hide quoted text -

I started having this problem today after months of working
successfully via a wireless router.
Any other ideas?

 

[KW]

Working ok for me now.....

I discovered when I ran ipconfig, that Vista was using an IP address
totally different from what I defined for my wireless IP. When I
tried to run ipconfig /release, I got a message indicating DHCP was
not enabled even though I had been using DHCP before the PC went into
sleep mode. I look at the registry settings for kb article 928233:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
\Interfaces\{GUID}

The wireless interface was showing the wrong IP address and DHCP was
turned off. I corrected those and all is ok now. I have no clue how
things got changed.

I hope this helps.
KW

 

[Roger K]

Working ok for me now.....

I discovered when I ran ipconfig, that Vista was using an IP address
totally different from what I defined for my wireless IP. When I
tried to run ipconfig /release, I got a message indicating DHCP was
not enabled even though I had been using DHCP before the PC went into
sleep mode. I look at the registry settings for kb article 928233:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
\Interfaces\{GUID}

The wireless interface was showing the wrong IP address and DHCP was
turned off. I corrected those and all is ok now. I have no clue how
things got changed.

I hope this helps.
KW

I've just managed to fix mine by uninstalling the driver for the network
card and then rebooting the laptop so the Vista installed the generic
driver. Now OK - don't know why I hadn't tried that before. I guess MS will
update the driver and it'll fail again, but at least I'm prepared for it.
BTW how did you determine the correct IP address (and turn on DHCP)?