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DWL-650+ Win98SE Freeze downloading large file

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Anonymous
a b D Laptop
February 7, 2005 6:02:01 PM

Archived from groups: comp.sys.laptops (More info?)

ello,

Problem:

Wireless network card causes system freeze sporadically.

System:

My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk, with
Win98SE and all the windows update patches applied successfully.

I have a D-Link DWL-650+ Wireless 802.11b card that seems to work ok
except the machine frequently freezes up when surfing. I have found
a
repeatable scenario that causes the freeze: try to download a 27MB
file
via FTP from another machine on my LAN. Freezes every time.

Previous attempts at remediation:

Installed the latest driver for the card, version 3.0.7.

Disabled all unused COM ports in Device Manager.

Disabled all unused LAN cards in Device Manager.

Freed up all IRQs I can (IRQ3)

Tried different PCMCIA ports on the machine.

Still freezes.

Any ideas?

Thanks, very much,

Ed
Anonymous
a b D Laptop
February 7, 2005 6:47:04 PM

Archived from groups: comp.sys.laptops (More info?)

<edburns@gmail.com> wrote in message
news:1107815996.587192.156060@f14g2000cwb.googlegroups.com...
> ello,
>
> Problem:
>
> Wireless network card causes system freeze sporadically.
>
> System:
>
> My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk, with
> Win98SE and all the windows update patches applied successfully.
>
> I have a D-Link DWL-650+ Wireless 802.11b card that seems to work ok
> except the machine frequently freezes up when surfing. I have found
> a
> repeatable scenario that causes the freeze: try to download a 27MB
> file
> via FTP from another machine on my LAN. Freezes every time.
>
> Previous attempts at remediation:
>
> Installed the latest driver for the card, version 3.0.7.
>
> Disabled all unused COM ports in Device Manager.
>
> Disabled all unused LAN cards in Device Manager.
>
> Freed up all IRQs I can (IRQ3)
>
> Tried different PCMCIA ports on the machine.
>
> Still freezes.
>
> Any ideas?
>
> Thanks, very much,
>
> Ed
>
Try adding more RAM. The unit has to hit that swap file pretty hard with
only 32 MB of RAM. Surfing the net often means a lot of graphics!
Anonymous
a b D Laptop
February 7, 2005 11:39:17 PM

Archived from groups: comp.sys.laptops (More info?)

Richard Johnson wrote:
> <edburns@gmail.com> wrote in message
> news:1107815996.587192.156060@f14g2000cwb.googlegroups.com...
>> ello,
>>
>> Problem:
>>
>> Wireless network card causes system freeze sporadically.
>>
>> System:
>>
>> My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk,
>> with Win98SE and all the windows update patches applied
>> successfully.
>>
>> I have a D-Link DWL-650+ Wireless 802.11b card that seems to work
>> ok except the machine frequently freezes up when surfing. I have
>> found
>> a
>> repeatable scenario that causes the freeze: try to download a 27MB
>> file
>> via FTP from another machine on my LAN. Freezes every time.
>>
>> Previous attempts at remediation:
>>
>> Installed the latest driver for the card, version 3.0.7.
>>
>> Disabled all unused COM ports in Device Manager.
>>
>> Disabled all unused LAN cards in Device Manager.
>>
>> Freed up all IRQs I can (IRQ3)
>>
>> Tried different PCMCIA ports on the machine.
>>
>> Still freezes.
>>
>> Any ideas?
>>
>> Thanks, very much,
>>
>> Ed
>>
> Try adding more RAM. The unit has to hit that swap file pretty hard
> with only 32 MB of RAM. Surfing the net often means a lot of
> graphics!

....additionally, you need at least 300MB free space on the HD - that's
contiguous space - so after making that much available, defragment. It
might take a while if the drive has not been defragmented frequently.

Q
Related resources
February 8, 2005 5:29:11 AM

Archived from groups: comp.sys.laptops (More info?)

edburns@gmail.com wrote:
> ello,
>
> Problem:
>
> Wireless network card causes system freeze sporadically.
>
> System:
>
> My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk, with
> Win98SE and all the windows update patches applied successfully.
>
> I have a D-Link DWL-650+ Wireless 802.11b card that seems to work ok
> except the machine frequently freezes up when surfing. I have found
> a
> repeatable scenario that causes the freeze: try to download a 27MB
> file
> via FTP from another machine on my LAN. Freezes every time.
>
> Previous attempts at remediation:
>
> Installed the latest driver for the card, version 3.0.7.
>
> Disabled all unused COM ports in Device Manager.
>
> Disabled all unused LAN cards in Device Manager.
>
> Freed up all IRQs I can (IRQ3)
>
> Tried different PCMCIA ports on the machine.
>
> Still freezes.
>
> Any ideas?
>
> Thanks, very much,
>
> Ed
>

I had a perfectly functioning wireless system with a Linksys router.
I added a DWL650 to the mix and it locked up frequently requiring
rebooting every computer on the network to get it back.

I flashed the firmware on the ROUTER and those problems went away.
mike

--
Return address is VALID.
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
http://nm7u.tripod.com/homepage/te.html
Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
Bunch of stuff For Sale and Wanted at the link below.
http://www.geocities.com/SiliconValley/Monitor/4710/
Anonymous
a b D Laptop
February 8, 2005 7:34:25 AM

Archived from groups: comp.sys.laptops (More info?)

edburns@gmail.com wrote:
>
> ello,
>
> Problem:
>
> Wireless network card causes system freeze sporadically.
>
> System:
>
> My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk, with
> Win98SE and all the windows update patches applied successfully.

32MB RAM???!!! I'm amazed it even boots ;)  You gotta add a lot more RAM to get
98 to run well. 128MB is normally the min RAM for 98 (and higher) to run well.

TJ
Anonymous
a b D Laptop
February 8, 2005 8:44:59 AM

Archived from groups: comp.sys.laptops (More info?)

Capt. 'Wild' Bill Kelso, USAAC wrote:
> edburns@gmail.com wrote:
>>
>> ello,
>>
>> Problem:
>>
>> Wireless network card causes system freeze sporadically.
>>
>> System:
>>
>> My machine is a Toshiba Tecra 730CDT with 32MB ram and 2GB disk,
>> with Win98SE and all the windows update patches applied
>> successfully.
>
> 32MB RAM???!!! I'm amazed it even boots ;)  You gotta add a lot more
> RAM to get 98 to run well. 128MB is normally the min RAM for 98 (and
> higher) to run well.
>
> TJ

Not so... Win98 runs fine in 32MB, a bit slow. The more serious issue
is the HD but with adequate management the HD is OK.

Q
Anonymous
a b D Laptop
February 8, 2005 1:16:38 PM

Archived from groups: comp.sys.laptops (More info?)

Thanks for all your replies. I tried manually setting the swap space
to have a 530MB maximum (ludicrous, I know, but I'll try anything at
this point) Still freezes up every time when getting a large file over
FTP.

Could it be something with the MTU?

The router is a Netgear MR814v2. There is a firmware upgrade
available, but I don't observe the problem that every computer freezes
up, only the one with the DWL-650+. In any case, I'll try the
firmware upgrade and see if that helps.

Ed
February 8, 2005 4:58:01 PM

Archived from groups: comp.sys.laptops (More info?)

edburns@gmail.com wrote:
> Thanks for all your replies. I tried manually setting the swap space
> to have a 530MB maximum (ludicrous, I know, but I'll try anything at
> this point) Still freezes up every time when getting a large file over
> FTP.
>
> Could it be something with the MTU?
>
> The router is a Netgear MR814v2. There is a firmware upgrade
> available, but I don't observe the problem that every computer freezes
> up, only the one with the DWL-650+. In any case, I'll try the
> firmware upgrade and see if that helps.
>
> Ed
>

I lied. I have the same Netgear router. Flash the firmware.
The Linksys is on the other network. Sorry for the confusion.
mike

--
Return address is VALID.
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
http://nm7u.tripod.com/homepage/te.html
Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
Bunch of stuff For Sale and Wanted at the link below.
http://www.geocities.com/SiliconValley/Monitor/4710/
Anonymous
a b D Laptop
February 9, 2005 5:33:31 PM

Archived from groups: comp.sys.laptops (More info?)

Ok, I flashed the firmware on the netgear MR814v2, but I still get the
problem.

I tried setting the MAX TCP Receive to 2048 and the MTU to 1400 using
DRTCP, but still I see the problem. At this point, can someone point
me at some diagnostic tools to give me some insight into what's
happening? There are two parameters I'm investigating:

Receive Rate
Total Bytes Received

Ed
Anonymous
a b D Laptop
February 11, 2005 12:35:31 PM

Archived from groups: comp.sys.laptops (More info?)

Does anyone have any more suggestions to offer on this?

Ed
!