2.4Ghz WRT 1900ACS V2 problem v3.0-r40559

Post new topic   This topic is locked: you cannot edit posts or make replies.    DD-WRT Forum Forum Index -> Marvell MVEBU based Hardware (WRT1900AC etc.)
Author Message
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 01, 2020 8:24    Post subject: 2.4Ghz WRT 1900ACS V2 problem v3.0-r40559 Reply with quote
I have returned to factory settings. Re installed the Firmware: DD-WRT v3.0-r40559 std (08/06/19)
The settings are as the pictured.
I have tried different canals and nothing more then 20mbps. On 5ghz I have a >150mbps. On 2.4G I was having 100mbps and more. Now the internet on 2.4G is very slow.
Please help me with this.

settings:
https://drive.google.com/open?id=1Ncy7ZVK3nD-1iqzjQBjnWK-FgEGiFglP
Sponsor
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 9066
Location: Netherlands

PostPosted: Fri May 01, 2020 9:26    Post subject: Reply with quote
Welcome to the forum

Auto channel is always wrong, and using build 40559 is probably wrong

For an optimal user experience take note of the forum rules:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
WireGuard Documents & Guides:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327397
OpenVPN Documents & Guides: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327398
IPSET: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327261
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 01, 2020 9:57    Post subject: Reply with quote
egc wrote:
Welcome to the forum

Auto channel is always wrong, and using build 40559 is probably wrong

For an optimal user experience take note of the forum rules:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

I have tried to use any other canal by analyzing the other routers. but the speed is not increasing on 2.4g.
Should I try to use on older build ?
This was working fine for 6+ months but now something go wrong. This is why I posted the settings and the security settings in the pictures. Now I noticed that when I disable the security the speed is normal on 2.4g

I am despaired
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 9066
Location: Netherlands

PostPosted: Fri May 01, 2020 10:04    Post subject: Reply with quote
I do not use Marvell based router (for a reason)

But what is the latest build you have tried?

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
WireGuard Documents & Guides:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327397
OpenVPN Documents & Guides: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327398
IPSET: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327261
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 01, 2020 11:55    Post subject: Reply with quote
egc wrote:
I do not use Marvell based router (for a reason)

But what is the latest build you have tried?


this is the latest build in the database and I am using it
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 9066
Location: Netherlands

PostPosted: Fri May 01, 2020 12:16    Post subject: Reply with quote
simo955 wrote:
egc wrote:
I do not use Marvell based router (for a reason)

But what is the latest build you have tried?


this is the latest build in the database and I am using it


Please read the forum guidelines I pointed you to earlier, take especially note of point 8 and 9

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
WireGuard Documents & Guides:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327397
OpenVPN Documents & Guides: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327398
IPSET: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=327261
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 01, 2020 12:51    Post subject: Reply with quote
I updated and reset the router to build DD-WRT v3.0-r42954 std (04/20/20) but no fix. I opened this treed because I have no idea about optimal settings. If some one can provide the optimal settings W will be very happy. Now I am with Firmware: DD-WRT v3.0-r42954 std (04/20/20)
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 11827
Location: Texas, USA

PostPosted: Fri May 01, 2020 16:54    Post subject: Reply with quote
Please refer to this sticky at the top of this forum section:

DD-WRT Installation, Upgrade & Basic Setup–Cliff Notes

It was put there for a reason.

_________________
Official Forum Rules, Guidelines & Helpful InformationFirmware FAQInstallation WikiWhere Do I Download Firmware‽
DON'T use Chromium-based browsersRTFM/STFW TL;DR is NOT an excuse. • Why Should I Care What Color the Bikeshed Is‽
Please DO NOT PM me with questions; Ask in the forum. ---------------------- Linux User #377467 counter.li.org / linuxcounter.net
Per Yngve Berg
DD-WRT Guru


Joined: 13 Aug 2013
Posts: 6304
Location: Romerike, Norway

PostPosted: Sun May 03, 2020 14:41    Post subject: Reply with quote
Status->Wireless show the status of each client.

The 2.4 Ghz band can be very crowded.
There are problem with neighbours on overlapping channels. Try with 20 Mhz and set channel 1, 6 or 11.
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 08, 2020 11:51    Post subject: Reply with quote
Per Yngve Berg wrote:
Status->Wireless show the status of each client.

The 2.4 Ghz band can be very crowded.
There are problem with neighbours on overlapping channels. Try with 20 Mhz and set channel 1, 6 or 11.


thank you, you ware wright, the channel quality is 50% on the 2,4G and 90% on 5G. I will try the 20mhz channel
simo955
DD-WRT Novice


Joined: 20 Sep 2019
Posts: 15

PostPosted: Fri May 08, 2020 14:22    Post subject: Reply with quote
simo955 wrote:
Per Yngve Berg wrote:
Status->Wireless show the status of each client.

The 2.4 Ghz band can be very crowded.
There are problem with neighbours on overlapping channels. Try with 20 Mhz and set channel 1, 6 or 11.


thank you, you ware wright, the channel quality is 50% on the 2,4G and 90% on 5G. I will try the 20mhz channel


Why the TX power is 20dBm, do you have some idea ?
SurprisedItWorks
DD-WRT Guru


Joined: 04 Aug 2018
Posts: 1296
Location: Appalachian mountains, USA

PostPosted: Fri May 08, 2020 15:14    Post subject: Reply with quote
Leave Tx Power at the default 30 dBm. If Germany requires lower, the router will adjust downward... Look in the status tab to see the effect.

As someone else said above, never use Auto for channel (or extension), as it has a history of causing problems, including extreme slowdown in some cases. Choose channel 1, 6, or 11. If you want to know which has the least interference, first go to Status>Wireless and use the two survey buttons at the bottom to see what your neighbors are up to. For example, if there's a powerful signal on Channel 1 (esp if it shows a lot of busy time), be on Channel 6 or, even better, Channel 11. Rejecting adjacent-channel signals is not a perfect process, and the further away you are spectrally from the interferer, the better.

In general, as the Cliff Notes sticky says, the resource for setting parameters for this router is https://wiki.dd-wrt.com/wiki/index.php/Atheros/ath_wireless_settings. My settings are like yours (other than channel/extension) except that I do enable Short Preamble. But it's getting the mode, channel, and extension right that usually makes the difference.

I'm on build 42926 myself (posted online under 42925) and am showing a 450Mbit/s connection on 2.4 GHz in the same room. But I doubt your problems are about the build. It's far more likely to be a configuration or interference problem.

_________________
Six Linksys WRT1900ACSv2 routers on 46816, 48141: VLANs, VAPs, NAS, client mode, OpenVPN client (AirVPN), DDNS, wireguard servers and clients (AzireVPN), three DNSCrypt DNS providers (incl Quad9) via VPN clients.
Display posts from previous:    Page 1 of 1
Post new topic   This topic is locked: you cannot edit posts or make replies.    DD-WRT Forum Forum Index -> Marvell MVEBU based Hardware (WRT1900AC etc.) All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum