Setting MTU size - Nexus One Q&A, Help & Troubleshooting

Is it possible to set the 3G MTU size on a rooted Nexus One?
apparently the cause of my connection stalling fairly regularly (requiring a reboot) is that my network doesn't seem to deal well with the default MTU size.
- Anthony

Related

Advanced Network Settings

It doesn't seem to make much difference what I set these settings to. Everything I've tried works. I set HSDPA on (default was off), I set the GPRS to PAP or CHAP with no noticiable change in results, and I set the CSD line type baud rate to 38400 (this seemed to speed up internet connections, but it could be my imagination).
Is it "anything goes" in the Advanced Network box?
The HSDPA setting will only have an effect if you are in an area serviced by HSDPA. You may not "feel" a difference in general browsing between HSDPA and standard 3G even if you are in a serviced area.
The GPRS authentication type (PAP CHAP) does not relate to speed. It is login authentication. Setting this to the wrong type could actually prevent you being able to connect completely, ut won't effect speed.
CSD baud rate will only effect speed during a CSD data session (very rare nowadays, and VERY slow). This is basically an actual dial-up data session (just like using a standard modem ona computer basically). I highly doubt you are even using a CSD connection. If you are, it is probably only at 9600 baud, regardless of the line type setting you set it to.
These comments make sense, expect for the GPRS authentication type (PAP CHAP). I haven't noticed a bit of differnence no matter which I choose. I've gone back and forth testing internet, phone, GPS, messsaging, etc. and both seem to work interchangeably. Is there a speciifc test to show why one is better than the other?
It is simply an authentication type ... in other words, the way in which it is logging in to the servers. It will make absolutely no difference in speed.

Diamond + WPA: works?

Hi all,
i just bought the Diamond, and i'm trying to connect to a WPA protected Wifi hotspot.
It's trying to connect for ever, but never succeeding.
Any ideas?
I see lot of issues with WPA and other models, but didn't found anything related to the Diamond.
Yep, it works. I've connected my Diamond with WPA-PSK using TKIP encryption to my hidden wireless network on channel 11 of my Davolink DV-2020 router at home. Try and set your WiFi energy settings on your Diamond to 'best performance'. That could solve your problem.
Same here works with WPA TKIP , alltho when set to max powersave it keeps dropping off. So set slider to middle or max performance.

WLAN Fragment (Packet ?) size vs. streaming stops

Hi!
Ever since I change from my Huawei D100 broadband router to the Dovado 4GR I've been having problem when looking at streaming videos over WLAN.
The problem was that after 1-5 minutes the video would stop and wouldn't start again, but if looking at the same stream over 3G on the phone it worked.
The broadband on the router is also on 3G with the same operator (3 Sweden) so I know that the problem had to be with the new router.
Today I started experimenting with the available settings in my Dovado router and lowering the Fragment lenght from 2346 (maximum and default setting) to 1024 the streaming worked flawless!!
EDIT: I guess the Fragment Lenght is packet size in the Dovado router.
I don't know why this is but thought I should spread the experiance if anyone else have similar problems, try to change the fragment lenght.
Anybody with similar problems, please try this, next is to change the length to the best value without stops during streaming.
RTS stands for “Request to Send”. This parameter controls what size data packet the low level RF protocol issues to an RTS packet. The default is 2346.
There are several trade-offs to consider setting this parameter.
Using a small value causes RTS packets to be sent more often, consuming more of the available bandwidth, therefore reducing the apparent throughput of the network packet.
However, the more RTS packets that are sent, the quicker the system can recover from interference or collisions -- as would be the case in a heavily loaded network, or a wireless network with much electromagnetic interference.
Thanks for the comment, but I didn't use the RTS setting, it's disabled in the router. It's the maximum package size I think Dovado calls Fragment size.
Lowering it shouldn't be the best thing to do but it keeps my Wlan connection stable with my phone.
For your information I've had this problem with many different firmwares and kernels in my phone, right now I'm on JVS.
Sent from my GT-I9000 using xda premium

Possible fix for slow WiFi issue

Hi All,
I know some people are having an issue with Wifi speed dropping randomly and is fixed by switching wifi off then on again.
My specific issue is with a BT homehub in the UK of which my speed will drop from 30mbps to around 2mbps after being connected for about 2-3hours. My issue seems to be fixed by turning GPS off but obviously this isnt convenient.
I stumbled on a "fix" while playing with my APN settings:
1) Go into Mobile networks in settings (Under "more" in Wireless and Networks)
2) Go into "Access point Names"
3) Click on your APN (if you have mutiple active ones do this for all)
4) Under "APN type" remove "supl" from the list (mine now says "default,mms")
5) Reboot
Now my Wifi does not drop speed at all even with GPS on.
So "supl" has something to do with Assisted-GPS but my GPS is working just as well as it did before this change.
Please test and post here what your situation is and if it helped.
Had the same problem here... only fix was to flash franco kernel...
Sv: Possible fix for slow WiFi issue
Sorry but it didn't work for me
Skickat från min Nexus 7 via Tapatalk 2
Hmmm I think we have some different wifi bugs here, If your wifi is slow all of the time I think this is a different issue....
I have this confirmed working for myself and another user on Google+ up to now.
Sv: Possible fix for slow WiFi issue
OK, that's great for you guys!
No I don't have slow speed all the time. Sometimes when I toggle Wi-Fi on/off or if I restart the router the speed is good for some times (can differ from minutes to hours) but then the download speed drops from ~35mbps to 7-8mbps while my upload speed is constant around 12mbps. This happens on my home network and only on my n4, this doesn't happen at the university or on any of my other devices.
Skickat från min Nexus 7 via Tapatalk 2
Sorry about that, sounds like the same bug, maybe this fix is limited to only the BT homehub router.
I read some people having this issue with Dlink routers and a firmware update fixed it.
This fix is working for me with my BT HH3 router. I was seeing my speed drop from 40MB to 2MB when the phone screen was off for a while and so far this APN change seems to be working.
Excellent detective work. You should post this on the official bug tracker as it may help others.
the solution that work for me is
on /system/etc/wifi/WCNSS_qcom_cfg.ini
set "gEnableBmps=0"
disable the BMPS "Beacon Mode Power Save"
What it worked for me was to change the authentication method of the wifi router, it was WPA Personal when I was having the issue, I moved to WPA2 Personal Mixed with TKIP+AES WPA Algorithm and now everything works fine, no need to change anything on the phone.
marceloandrader said:
What it worked for me was to change the authentication method of the wifi router, it was WPA Personal when I was having the issue, I moved to WPA2 Personal Mixed with TKIP+AES WPA Algorithm and now everything works fine, no need to change anything on the phone.
Click to expand...
Click to collapse
I'll try this when i get home.
Sent from my Nexus 4 using xda app-developers app
marceloandrader said:
What it worked for me was to change the authentication method of the wifi router, it was WPA Personal when I was having the issue, I moved to WPA2 Personal Mixed with TKIP+AES WPA Algorithm and now everything works fine, no need to change anything on the phone.
Click to expand...
Click to collapse
You should use WPA2 with CCMP (AES) only for WiFi, as TKIP is insecure:
http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol
Also disable WPS if possible:
http://en.wikipedia.org/wiki/Wi-Fi_Protected_Setup

Wifi

Hi, I have a rooted ME173X with Android 4.2.2.
Although I have DHCP enabled, I recently can't connect to my Wifi anymore. The problem seems to be that the following IPs seem to be preset by the system and can't seem to be overridden:
IP address: 192.168.1.128 (should be something like 192.168.0.128)
Gateway: 192.168.1.1 (should be 192.168.0.1)
I can temporarily connect to my Wifi by manually switching off DHCP and typing in the correct values, in which case the erroneous addresses are visible in grey in the form. This fix works until the next reboot.
Any idea how I can fix this? How can I get DHCP to chose the proper IP addresses again? Many thanks for your consideration! :fingers-crossed:

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