Netgear R7800 (Nighthawk X4S – AC2600) - status

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egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Wed Dec 04, 2019 8:15    Post subject: Reply with quote
msoengineer wrote:
kernel-panic69 wrote:
"The f*cking router database strikes again". There needs to be a disclaimer on the main site to come to and/or search Google or the forum before doing anything. And, of course, everyone tacks onto the original support add thread, because that is logical, right. FFS, SMDFH.


FWIW,

I changed the header of the supported routers list/page.
I can't change the website of the router database...that has to be an email to whoever is the webmaster....

Let me know if this works better...
https://wiki.dd-wrt.com/wiki/index.php/Supported_Devices


Thanks it is progress but the website should point to the supported devices wiki and not to the router database and the website should give new users some guidelines (and perhaps we need new stickies in the forums)

I often send new users the following hints but those are just my ideas

Quote:
Below some pointers which might help to get the best out of DDWRT and out of the forum:
1. Research your router, start with the supported devices wiki:
https://wiki.dd-wrt.com/wiki/index.php/Supported_Devices .
2. In the supported devices wiki you can see if your router is supported and what architecture your router has and if you are lucky also an install guide/wiki.
3. Post in the right forum, from the former step you can see if your router is Broadcom, Qualcomm/Atheros, Marvell or other, use that forum to post router specific questions, for networking questions post in the Advanced Networking forum and for other things in the General Questions forum.
4. When posting always state router model, build number and when applicable the Kernel version.
Describe your problem and how you think it can be solved.
Give as much detail as you can also provide your network setup if applicable.
For your Network setup, state what wiki you have used: https://wiki.dd-wrt.com/wiki/index.php/Linking_Routers
5. When posting pictures make sure the maximum width is not more than 600 pixels.
6. Do not hijack a thread, meaning do not post your own problem in someone else's thread. Just start your own thread.
7. If your post is answered and your problem solved, mark your thread with [SOLVED] (the header of your first post).
8. Do NOT use the router database, builds can be found at:
https://dd-wrt.com/support/other-downloads/?path=betas%2F2019%2F
All builds are beta including those from the router database.
9. Before uploading a new build to your router, research the build by looking in the build threads.
This is an example of a build thread for build 41328 for Broadcom routers:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321699&highlight=41328
Search build threads with the search function and search on build number.
10. Use the build threads from the former step to report success or problems.
11. For older Broadcom routers (Linksys WRT54 and E series) read the peacock thread although some of it is outdated: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=51486
Builds can be found in the Broadcom directory for Linux kernel 2.4, in Broadcom_K26 for Linux K2.6 and in Broadcom_K3X for Linux K3.X.
12. If you are sure you have discovered a bug, after asking and querying the forum, you can report a real bug in the bug tracker: https://svn.dd-wrt.com/
This is also the place where the commits/changes to the source are administrated.
13. Recommended reading:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=54845
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=54959
14. If you are happy with DDWRT and want it to live on then donate:
https://dd-wrt.com/donations/

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Sponsor
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 3218
Location: UK, London, just across the river..

PostPosted: Wed Dec 04, 2019 10:18    Post subject: Reply with quote
hahaha well... now im one of those buggers.....!!!

if someone clears out this thread R7800, from all the vomit...,there will be a lots of valuable information in it Razz

1, 2, 3 ... 186, 187, 188 its a kind of a scary number to learn about to go trough about this unit and all issues around the Sun too.. Razz Razz

apart of that, not many of us left this day's....
and yea its not bad idea for a router base update, wiki, supported devices and ect., keep up with the good job... Wink

Im about to break the long-lasting R7800 40270 last Kong build...still in use..... and give a try to BS builds just in regard to an updated Wiregurd....and others....

_________________
Atheros
TP-Link WR740Nv1 ------DD-WRT 42054 BS WAP/Switch (wired)
TP-Link WR740Nv4 ------DD-WRT 42054 BS
TP-Link WR1043NDv2 ----DD-WRT 41813 BS (AP,PPPoE,NAT,AD Blocking,AP Isolation,Firewall,Local DNS,Forced DNS,DoT)
TP-Link WR1043NDv2 ----DD-WRT 42054 BS (AP,NAT,AD Blocking,Firewall,Local DNS,Forced DNS,DoT,)
TP-Link WR1043NDv2 ----Gargoyle OS 1.12.0 (AP,NAT,QoS,Quotas)
Qualcomm/IPQ8065
Netgear R7800 -------DD-WRT 42054 BS (AP,NAT,AD-Blocking,AP&Net Isolation,VLAN's,Firewall,Local DNS,DoT,VPN)
Broadcom
Netgear R7000 -------DD-WRT 42054 BS (AP,Wi-Fi OFF,NAT,AD-Blocking,Firewall,Local DNS,Forced DNS,DoT,VPN)
------------------------------------------------------------------------------------------------
Stubby for DNS over TLS I DNSCrypt v2 via Entware by mac913
giuliomagnifico
DD-WRT User


Joined: 11 Apr 2016
Posts: 273
Location: Italy

PostPosted: Wed Dec 04, 2019 12:47    Post subject: Reply with quote
Quote:
Im about to break the long-lasting R7800 40270 last Kong build...still in use..... and give a try to BS builds just in regard to an updated Wiregurd....and others....


Me too I’m in the same troub...ehm, situation. But last time I switched from Kong 402070 to BS build, the WAN stopped to acquire the IP, don’t ask why, I made a full reset and nothing changed, maybe somethings is different in the way the BS’s builds acquire the wan ip? Also the jffs2 space stopped working but the reset fixed it. Anyway I’m too lazy to insert all the fields/settings again so I switched back to 402070.

I think the limit is the security of the old builds, until they’re not secure it can be used, I’m still with a 2017 build on an old Buffalo router.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Wed Dec 04, 2019 13:21    Post subject: Reply with quote
I just switched out my Main router (R6400v2) for the R7800 with BS 41643.
Full reset with "erase nvram && reboot"

I can only acquire WAN after reboot of the modem but that is normal because it has a different MAC Smile

Running fine at the moment, Wireless was not better than my R6400v2 until I used @MSOEngineers list now it is really better.

One observation I used N only for 2.4 GHz on Broadcom and all clients connect fine, however on this router I have to use N/G mixed otherwise some clients did not want to connect (I knew that of course Wink )

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
yoyoma2
DD-WRT User


Joined: 24 Sep 2016
Posts: 113

PostPosted: Wed Dec 04, 2019 14:47    Post subject: Reply with quote
giuliomagnifico wrote:
Me too I’m in the same troub...ehm, situation. But last time I switched from Kong 402070 to BS build, the WAN stopped to acquire the IP, don’t ask why, I made a full reset and nothing changed, maybe somethings is different in the way the BS’s builds acquire the wan ip?
Even on r6300 a switch from Kong to BS caused difficulties with the WAN. I haven't put my r7800 as the gateway yet but from your experience I'll probably have the same problem.

The workaround for me is Setup->Advanced Routing->Operating Mode: switch to Router, Apply Settings, then back to Gateway, Apply Settings, then the WAN works until the next modem or router restart.

@msoengineer: Thanks for the warning at the top of the supported routers page. That would have saved me from the router database trap when I first tried dd-wrt.
LSM
DD-WRT Novice


Joined: 08 Apr 2019
Posts: 12

PostPosted: Sat Dec 07, 2019 17:44    Post subject: Reply with quote
dnulho1 wrote:
Hey, so it has been a couple weeks, I have done much more thorough research on this router and how to image it. When I do though, it isn't booting the new firmware, instead acting like there is no valid firmware at all. set the router back to U-Boot tftp mode, and push the factory .img back on it, and the router boots up just fine with no issues whatsoever. If I had any settings changed those settings are still there. I tried doing a factory firmware settings reset, as I can't seem to telnet/ssh in and do an 'nvram erase' command. but that didn't change behavior, and after flashing to ddwrt, failing, and flashing back to factory, the router was at the new installation/setup page, just as if I hadn't installed the dd-wrt firmware.
Factory: v1.0.2.62
DDWRT: 40559, whatever version Alozaros PM'ed me.

If anyone has any ideas of what I can do to get a ddwrt .img to stick, that would be great.


dnulhol,

I'd like to confirm that I too am having great difficulties getting my newly acquired R7800 flashed with dd-wrt.

I followed egc's excellent Install Guide for the R7800 but had no luck with various ddwrt factory-to-ddwrt images. I also tried several variations on the installation process with both Windows 10 and Linux: from the Netgear GUI, from tftp, and Netgears's nmrpflash (Windows & Linux). I also reverted to earlier Netgear images from the V1.0.2.63 it came with as far back as v1.0.0.28 and several in between as well as the latest Voxel.

The key summary observation is that every Netgear image can be installed in a variety of ways with resets and without, over any Netgear image and any inoperable ddwrt image. However, in no case will a ddwrt image boot. There appears to be two ddwrt cases. 1. After install and reboot the lan light flashes blue while the power light stays orange. 2. Iit appears to be in a boot loop, the lan leds flash blue, then a lan port flashes while the power light shows solid orange, then it blinks out and the cycle repeats.

Since I don't see any followup message that you have solved your problem I thought I would bring up my case.

Any suggestions would be greatfully appreciated and I will happily supply detailed technical information to any expert who advises me what is needed to further investigate this problem.


LSM
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Sat Dec 07, 2019 17:58    Post subject: Reply with quote
Have a look here: https://forum.openwrt.org/t/r7800-flashing-openwrt-causes-bootloop-bad-block-in-kernel-area/49608

Someone with a bad block on an R7800

You need serial output (in the recovery guide in the second post of the install thread)

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
bushant
DD-WRT Guru


Joined: 18 Nov 2015
Posts: 1316
Location: Indiana

PostPosted: Sat Dec 07, 2019 19:46    Post subject: Reply with quote
Has anyone tried a Kong factory-to-ddwrt.img?

If not it is worth a try.

37495-K3.18-r7800-factory-ddwrt.img -unzip first

39000-3-2-19R7800-factory-to-ddwrt.img -unzip first
LSM
DD-WRT Novice


Joined: 08 Apr 2019
Posts: 12

PostPosted: Sat Dec 07, 2019 22:32    Post subject: Reply with quote
egc wrote:
Have a look here: https://forum.openwrt.org/t/r7800-flashing-openwrt-causes-bootloop-bad-block-in-kernel-area/49608

Someone with a bad block on an R7800

You need serial output (in the recovery guide in the second post of the install thread)


egc,

thanks for the tip! I tried hnyman's OpenVPN R7800-owrt1907-r10779-d2d12346e8-20191204-2007-factory.img with a simple tftp flash and it installed and appears to be running fine. I'll check with Kong's OpenVPN version when I get a chance, although I'd really like to stay with dd-wrt. I'll report back if I find anything else out as I work away on this.

Also, bushant, thanks for the IMG suggestions but I tested those ones and they didn't work.


LSM
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Sun Dec 08, 2019 10:43    Post subject: Reply with quote
Do you also have a bad block?
(from CLI : dmesg)

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
^x3I*I$3%lb7T9
DD-WRT Novice


Joined: 02 Dec 2019
Posts: 4

PostPosted: Sun Dec 08, 2019 19:25    Post subject: Reply with quote
bushant wrote:
Has anyone tried a Kong factory-to-ddwrt.img?

If not it is worth a try.


yes, did this last night and it works great! i was on a openwrt kong firmware. steps:
1) saved latest openwrt file for peace of mind.
2) reset open wrt do default settings via web.
3) flashed factory to dd-wrt via tftp.
4) did multiple resets: gui, nvram command, reset button.
5) upgraded to newer 40270 bin file via web updater.
6) reset everything again.
7) setup dd-wrt.

previously i had flashed the latest beta on the r7800 beta page and it would drop signal every 2 hrs. now its stable - about 16 hrs up-time.

hopefully these steps will have good results for you also.

edit: to make it easier file #1: [url]https://mega.nz/#F!8ORwGQ4I!njP8fsx9E8OLhN-kBMYmNQ!5CQ2GSwI[/url] (IMG file). file #2: [url]https://mega.nz/#F!8ORwGQ4I!njP8fsx9E8OLhN-kBMYmNQ!JSZQGYJD[/url] (BIN file). do not unzip. flash/upgrade as downloaded.
LSM
DD-WRT Novice


Joined: 08 Apr 2019
Posts: 12

PostPosted: Sun Dec 08, 2019 21:20    Post subject: Reply with quote
egc wrote:
Do you also have a bad block?
(from CLI : dmesg)


egc,

I didn't open up the box to use the serial connection so I can't say for sure. However, based on the openwrt link you provided I think it is very likely. It appears stock firmware and Voxel (based on stock) have code in the *.img file to deal with bad blocks while dd-wrt probably does not.

The hnyman OpenWRT 19.07 firmware that installs and works is based on a Linux 4.19 kernel that will not fit into the standard 2 MB kernel rootfs space so the OpenWRT initial flash increases the size of this partition for 4.14/4.19 kernels. Also (See note by Jeff later in your openWRT link), OpenWRT may have similar code for handling bad blocks. ddWRT code may not have such bad block handling code, but even if it did there may not be sufficent space in the 2 mb rootfs to handle more than one bad block.

This may be a modest current problem for a few dd-wrt users like me, but when dd-wrt moves to 4.14/4.19 kernels for high performance units like the R7800 and EA8500, I hope this can be dealt with to reduce headaches.

After over 2 days of work on this, I can't spend any more time until dd-wrt code can handle this problem. In the meantime, I am working on deciding whether to use OpenWRT or Voxel as either will do OpenVPN. The latter appears to have a more user-friendly interface.

Thank you for your advice, and the excellent work you are doing on documenting the use of dd-wrt on the R7800. It has been truly helpful!

LSM
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Mon Dec 09, 2019 6:30    Post subject: Reply with quote
LSM wrote:
egc wrote:
Do you also have a bad block?
(from CLI : dmesg)


egc,

I didn't open up the box to use the serial connection so I can't say for sure. However, based on the openwrt link you provided I think it is very likely. It appears stock firmware and Voxel (based on stock) have code in the *.img file to deal with bad blocks while dd-wrt probably does not.

The hnyman OpenWRT 19.07 firmware that installs and works is based on a Linux 4.19 kernel that will not fit into the standard 2 MB kernel rootfs space so the OpenWRT initial flash increases the size of this partition for 4.14/4.19 kernels. Also (See note by Jeff later in your openWRT link), OpenWRT may have similar code for handling bad blocks. ddWRT code may not have such bad block handling code, but even if it did there may not be sufficent space in the 2 mb rootfs to handle more than one bad block.

This may be a modest current problem for a few dd-wrt users like me, but when dd-wrt moves to 4.14/4.19 kernels for high performance units like the R7800 and EA8500, I hope this can be dealt with to reduce headaches.

After over 2 days of work on this, I can't spend any more time until dd-wrt code can handle this problem. In the meantime, I am working on deciding whether to use OpenWRT or Voxel as either will do OpenVPN. The latter appears to have a more user-friendly interface.

Thank you for your advice, and the excellent work you are doing on documenting the use of dd-wrt on the R7800. It has been truly helpful!

LSM


From the CLI (telnet/putty): dmesg
That should also show bad blocks

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
LSM
DD-WRT Novice


Joined: 08 Apr 2019
Posts: 12

PostPosted: Tue Dec 10, 2019 20:24    Post subject: Reply with quote
egc wrote:
LSM wrote:
egc wrote:
Do you also have a bad block?
(from CLI : dmesg)


egc,

I didn't open up the box to use the serial connection so I can't say for sure. However, based on the openwrt link you provided I think it is very likely. It appears stock firmware and Voxel (based on stock) have code in the *.img file to deal with bad blocks while dd-wrt probably does not.

The hnyman OpenWRT 19.07 firmware that installs and works is based on a Linux 4.19 kernel that will not fit into the standard 2 MB kernel rootfs space so the OpenWRT initial flash increases the size of this partition for 4.14/4.19 kernels. Also (See note by Jeff later in your openWRT link), OpenWRT may have similar code for handling bad blocks. ddWRT code may not have such bad block handling code, but even if it did there may not be sufficent space in the 2 mb rootfs to handle more than one bad block.

This may be a modest current problem for a few dd-wrt users like me, but when dd-wrt moves to 4.14/4.19 kernels for high performance units like the R7800 and EA8500, I hope this can be dealt with to reduce headaches.

After over 2 days of work on this, I can't spend any more time until dd-wrt code can handle this problem. In the meantime, I am working on deciding whether to use OpenWRT or Voxel as either will do OpenVPN. The latter appears to have a more user-friendly interface.

Thank you for your advice, and the excellent work you are doing on documenting the use of dd-wrt on the R7800. It has been truly helpful!

LSM


From the CLI (telnet/putty): dmesg
That should also show bad blocks



egc,

I now have Kong's latest OpenWRT installed and running (wow is it different that dd-wrt, not necessarily in a good way).

I used ssh to get the dmesg file but have 670 lines and nothing appears to obviously be a bad block message. Is there something specific to look for? I can send it to you or attach it to another message, if appropriate.

Thanks for the ongoing assistance!


LSM
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 4703
Location: Netherlands

PostPosted: Wed Dec 11, 2019 8:23    Post subject: Reply with quote
Can you zip the file and then PM me and attach it (hit the Personal Mail button in/below this post) then I can have a look.

Thanks

_________________
Routers:Netgear R7800, Netgear R6400v1, Netgear R6400v2, Linksys EA6900 (XvortexCFE), Linksys E2000 (converted WRT320N), WRT54GS v1.
Install guide Linksys EA6900: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=291230
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
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