Asus RT-AC66U: Is there a version of DD-WRT that works?

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Brett Glass
DD-WRT User


Joined: 16 Jul 2010
Posts: 111

PostPosted: Sun Apr 05, 2020 4:36    Post subject: Reply with quote
kernel-panic69 wrote:
Yeah, I forgot to ask which "latest builds" of DD you were referring to, @Brett Glass lol
Every one I tried, including the most recent, the one before that, one that's about a year old (39267) which I use in many of my routers because it's stable, and one older than that (30709). Not one of them worked.
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Brett Glass
DD-WRT User


Joined: 16 Jul 2010
Posts: 111

PostPosted: Sun Apr 05, 2020 4:38    Post subject: Reply with quote
kernel-panic69 wrote:
VPN image uploaded. I'm going to have to make some adjustments and get a few things sorted so when I offer or people request... lol
Trying it now. Will know within a day how stable it is. Thank you!
kernel-panic69
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Joined: 08 May 2018
Posts: 7249
Location: Texas, USA

PostPosted: Sun Apr 05, 2020 4:51    Post subject: Reply with quote
Brett Glass wrote:
kernel-panic69 wrote:
VPN image uploaded. I'm going to have to make some adjustments and get a few things sorted so when I offer or people request... lol
Trying it now. Will know within a day how stable it is. Thank you!


You're welcome. I only have so much control over development, but you can always check in over on the linksysinfo.org forums and ping the development threads. I've been looking through a lot of things and noticing some things that haven't been worked on yet. I usually give pedro and M_ars input when I see things.

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MysticGold04
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Joined: 20 Apr 2018
Posts: 76
Location: Troubleshooting

PostPosted: Sun Apr 05, 2020 21:27    Post subject: Reply with quote
I know this is a ddwrt forum, but you may want to try the Merlin Fork on your AC66u.

https://www.snbforums.com/threads/fork-asuswrt-merlin-374-43-lts-releases-v42e7.18914/

It is a very solid build of firmware.

**note you will have to go get the Asus factory restore utility to flash this on your router.

_________________
ASUS RT-AC68U (R/AP) Merlin 384.19
ASUS RT-AC68U r44236 AP/Bridge
ASUS RT-AC68U FT 2020.5 Bridge
WRT54GL 1.1 r44236-std (old faithful)
Linksys E1200v2 r43266 (sleeping)


Last edited by MysticGold04 on Sun Apr 05, 2020 21:30; edited 1 time in total
kernel-panic69
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Joined: 08 May 2018
Posts: 7249
Location: Texas, USA

PostPosted: Sun Apr 05, 2020 21:29    Post subject: Reply with quote
MysticGold04 wrote:
I know this is a ddwrt forum, but you may want to try the Merlin Fork on your AC66u.

https://www.snbforums.com/threads/fork-asuswrt-merlin-374-43-lts-releases-v42e7.18914/

It is a very solid build of firmware.


I forgot about John's fork. Thanks for that, although there is a lot of development upstream that has not been merged to his fork, apparently. I guess we'll see how well my FT beta image worked soon enough.

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MysticGold04
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Joined: 20 Apr 2018
Posts: 76
Location: Troubleshooting

PostPosted: Sun Apr 05, 2020 22:43    Post subject: Reply with quote
There was a new version release on
26 March 2020. Smile

_________________
ASUS RT-AC68U (R/AP) Merlin 384.19
ASUS RT-AC68U r44236 AP/Bridge
ASUS RT-AC68U FT 2020.5 Bridge
WRT54GL 1.1 r44236-std (old faithful)
Linksys E1200v2 r43266 (sleeping)
kernel-panic69
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Location: Texas, USA

PostPosted: Sun Apr 05, 2020 23:09    Post subject: Reply with quote
With busbybox 1.25.1 and a bunch of old packages that have not been updated or patched for years. The FreshTomato folks are slowly working forward on that, there are still pieces and parts that need attention, so it's still a work in progress. A lot of people keep bumping random requests to add things that require 3.x kernels and/or kernel headers and/or updated toolchains without knowing the ramifications of these requests or work involved. I need to look into building new toolchains to test. Anyhow... yes, it is solid and works but.
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Brett Glass
DD-WRT User


Joined: 16 Jul 2010
Posts: 111

PostPosted: Mon Apr 06, 2020 3:21    Post subject: Reply with quote
Status report: Those Fresh Tomato 2020.3 beta builds do work - both the slim "VPN" build and the "AIO" build with lots of bells and whistles. They're not perfect (at first, I couldn't change the port on which the Web server listened), and there's no way to disable the reset button to keep Uncle Joe the Self-Proclaimed Computer Expert from messing things up whilst trying to "fix" the router. But PPP-based WAN protocols work reliably, as does the wireless.

Don't know why DD-WRT doesn't work, but at least this is a workaround until it does!
kernel-panic69
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Location: Texas, USA

PostPosted: Mon Apr 06, 2020 3:41    Post subject: Reply with quote
I would have to look into the mess of code DD is. I did notice that there were commits that I presume are related to VPN server certificates, so hopefully no issues with VPN client on either image. If so, I can always pull the updates and run new images. I'm currently waiting to see if the MIPS branch is caught up with ARM on other updates. I never know, since the ARM branch usually takes precedence Exclamation Arrow
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Brett Glass
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Joined: 16 Jul 2010
Posts: 111

PostPosted: Wed Apr 08, 2020 15:14    Post subject: Reply with quote
Well, any help we can get in obtaining secure, reliable third party firmware for routers such as this one would be MUCH appreciated! Another router on which the published DD-WRT builds fail completely is the TP-Link TL-WR1043ND. None of the DD-WRT builds for this router (any version) will even flash, much less run.

Similarly, on the TP-Link TL-WR940N (all versions), support for the built-in Ethernet switch is broken. The LAN ports can each communicate with the CPU and the Wi-Fi but not with one another, which is incredibly frustrating if you have, say, a networked printer.

Better support for these Atheros-based routers would help a great deal. We would be glad to donate hardware to any project that will get these routers working 100%.
kernel-panic69
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Location: Texas, USA

PostPosted: Wed Apr 08, 2020 15:30    Post subject: Reply with quote
Brett Glass wrote:
Similarly, on the TP-Link TL-WR940N (all versions), support for the built-in Ethernet switch is broken. The LAN ports can each communicate with the CPU and the Wi-Fi but not with one another, which is incredibly frustrating if you have, say, a networked printer.

Better support for these Atheros-based routers would help a great deal. We would be glad to donate hardware to any project that will get these routers working 100%.


I have been following this issue. I noticed a missing line of code from the older 3.2 / 3.5 kernels that didn't migrate to the 3.10+ kernels that is likely part of the issue. BrainSlayer has (so far) overlooked my pointing at it. Feel free to chime in on this ticket: https://svn.dd-wrt.com/ticket/5578 and provide proof of issues. I just found the thread we were discussing this in over on Atheros forum, I knew I wasn't losing my mind thinking we had discussed this already lol https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=152738

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mikeblankley
DD-WRT Novice


Joined: 26 Nov 2019
Posts: 4

PostPosted: Thu Apr 09, 2020 13:47    Post subject: Reply with quote
Just flashed to latest build (42847) and can confirm this issue still exists.

Hopefully a resolution will be provided soon.
Brett Glass
DD-WRT User


Joined: 16 Jul 2010
Posts: 111

PostPosted: Fri Apr 10, 2020 20:46    Post subject: Reply with quote
mikeblankley wrote:
Just flashed to latest build (42847) and can confirm this issue still exists.

Hopefully a resolution will be provided soon.

I hope so! I'd really like to be using DD-WRT on Atheros-based routers.

BTW, tried the Fresh Tomato 2020.2 build for the Tenda A15 (a brand which DD-WRT, for some reason, doesn't support at all) but it wouldn't flash. I wonder if they've locked out third party firmware....
kernel-panic69
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Joined: 08 May 2018
Posts: 7249
Location: Texas, USA

PostPosted: Fri Apr 10, 2020 20:51    Post subject: Reply with quote
Just in case you didn't already find this:

https://www.linksysinfo.org/index.php?threads/tenda-ac15-ac1900-tomato-firmware-support.71709/

It is possible latest firmware versions may not support flashing 3rd party custom firmware.

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Brett Glass
DD-WRT User


Joined: 16 Jul 2010
Posts: 111

PostPosted: Fri Apr 10, 2020 22:17    Post subject: Reply with quote
Looks like there are two problems with the A15. Not only does it appear that third party firmware won't load through the GUI (though this might be bypassed by using their "unbricking" procedure); it looks as if third party operating systems such as Tomato do not turn on the amplifier chips, cutting the transmit power dramatically. (It should be possible to find out how to enable the amplifiers by connecting a VOM to the circuit board and doing a sweep of the memory mapped I/O space.)
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