Wireless speed drops

[Georgi Hristozov]

Hi,

David Timms написа:
> Georgi Hristozov wrote:
>> <snip>
> Did you check /var/log/messages between the time it's working well, to 
> when it starts to go slow ?
> Does NM go through a disconnect, connected process ?

There's nothing in /var/log/messages. NM gets through this process, but 
it doesn't actually put the interface down. That's what I quite can't 
understand - how can this be fixed without bringing down the wlan interface.

>> Any ideas how can I debug this issue?
> - With another wireless machine, can you prove to yourself that access 
> rate stays high even when problem laptop goes slow ?
> 
> - Once troubled, does a WAP gateway restart help ?
> 
> - Does the laptop only have trouble with this WAP, ie test it with 
> another WAP ?
> 
> - Could the wireless card be getting put in low power mode/asleep where 
> waking doesn't working properly ?
> 
> - Are you using power suspend or sleep modes ?
> 
> - can a wired connection to the same network stay up and continually 
> download at good wired rates (eg 60Mbps on 100M connection ?
> 
> - Is the wap a router as well ?
> 
> - are you using any peer-peer network apps on either wired or wireless 
> parts of your network, or even the on the troubling laptop ?
> 
> - Does the WAP log show any trouble ?
> 
> - Are you moving too close or far away from the WAP ?
> 
> - Interference from too many 802.11 frequency devices like other WAPs, 
> microwave, DECT cordless phones etc ?
> 
> - does the wireless tools like iwconfig etc show that the connection 
> speed has been adjusted ?
> 
> - does it matter if your notebook is running of mains or battery ?
> 
> These are just random guesses really, since my 3945 on HP nx6320 works 
> just fine, and continues to work when I take the notebook downstairs, 
> some obstructions away. However, my WAP Netgear WTG624 needs a power 
> reboot about every one-two weeks because it stops responding anymore, ie 
> the client network cards (notebook and 802.11G mobile phone) can no 
> longer connect.
> 
> DaveT.
> 

I have tested a lot of wireless equipment with this AP, and everything 
worked fine. The channel I'm using is "far away" from the other wireless 
networks in my area. Moreover I bought the notebook with Vista and it 
worked perfectly for a few months. I tried with Vista now again (it's 
still on the other partition) and it seemed to be OK.

About the power suspend - the problem appears no matter if I'm working 
on the notebook or not. Anyway, I have some trouble with ACPI (sometimes 
the machine doesn't want to sleep, but I think it's caused by the CIFS 
shares) and maybe I should investigate this.