On Fri, 1 Nov 2013, Toby Corkindale <toby@dryft.net> wrote:
My thinkpad is almost the same model number as yours. I've noticed that I get good speeds (5+mb/sec) over the wifi in Windows, but only around 40kb/sec in Linux. I'm guessing poor Linux driver support is to blame.
My real problem here is Android Wifi performance and as it affects 3 phones with different models and different versions of Android (Xperia X10i, Galaxy Note 2, and Nexus 4) I'm quite sure that the problem is with the access point (or maybe interference as you note). I'm trying to debug the performance of my Thinkbad because I can do things there. Android really isn't a good example of free software.
Although that can't explain your situation if it used to be fast. Try running inSSIDer (or similar) to see if your neighbours have recently started broadcasting on the same channels as your AP?
Thanks for the suggestion, I'll investigate that later. On Fri, 1 Nov 2013, James Harper <james.harper@bendigoit.com.au> wrote:
Did you ever take any of those readings before the problem started? It's been years since I had to look at wireless on Linux (outside of OpenWRT), but at the time the signal quality measurements were never useful in any way.
No. In retrospect I should make a practice of recording such things. In this case I don't care about Thinkpad Wifi performance at home for any reason than debugging the Android problem. As for quality measurements, I've noticed that the number varies and a higher number is correlated with faster transfers. So while the number is fairly dubious in many ways it does seem to be a useful measure.
I'd start with identifying what might have changed. The weather has warmed up here (central vic) over the last few days - has your house/office been warmer lately? Has someone erected a large bronze statue next to the router?
I don't think it's much warmer. 22C now, cooler late last night when I was trying to transfer some files. It worked well during the day a month ago and it should work well during the night now if heat is the issue.
What channel are you set to? Try changing it. Maybe your neighbors have bought some new wireless hardware (baby monitors are supposedly great for disrupting the 2.4GHz spectrum!)
Good idea, I'll try that.
Can you turn off the 2.4Ghz and 5Ghz radios in the router independently? In my experience they are normally different radio's and bridged together in software.
I don't think that's possible.
Failing any of that, can you get another wireless access point to try?
I guess that's the next thing to try if the other suggesstions from you and Toby don't work. Thanks! -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/