I have a strange and annoying problem. I recently purchased a USR Sportster
SP1336 PC card modem for my IBM Thinkpad 385ED. I flashed the modem to X2
right after I got it. However, I have noticed that now modem performance
depends on how the laptop is powered (battery or AC).
If I connect to my ISP when the laptop is plugged in, Win95 reports a 48kbps
connection (every time) and throughput is AWFUL! I get 1k/sec downloads and
sometimes even slower. If I unplug the laptop so it runs off of the battery
(while it is still connected), throughput goes up to what I would expect
with an X2 modem. If I connect to my ISP when the laptop is powered by the
battery, throughput is great. If I then plug the machine in to AC power,
downloads will slow to a crawl.
This is extraordinarily annoying! Now I need to make sure my battery has a
good charge before I connect to the internet and surf the web. I sure wish
it was the other way around--you usually have an AC outlet handy if you
happen to be using a modem.
I have tried everything! At first I thought my power management was messed
up, but those settings don't seem to make a difference. I've tried dimming
the display, turning off the display, using different AC outlets and phone
jacks, yada yada yada. I sent USR a few different emails about this
problem, but they just sent a generic "problems with X2" form letter.
Should I be bothering USR (3com) or IBM? As far as I can tell, I'm using
the latest drivers for the modem. If ANYONE has any suggestions I would
greatly appreciate it!
Thank you very much!