Hi all, if I understand correctly, at this point the OpenWRT status for this device:
With 19.07.8 (and 19.07.9) everything works more or less stable except for the lack of 5 GHz WiFi.
With higher versions there is a WiFi regression as reported by @idcrises but it can be worked around by disabling WMM.
Is this correct?
Did anybody run an official 22.03 build?
Thanks to @Marssl builds and device details, I've managed to add Archer C50 V6 into current master of OpenWRT.
I'm testing it since today, so far it looks pretty good, both Wi-Fi interfaces have been recognized by their model names. I'm using my Archer as a wireless repeater to the LTE router with relayd. In comparison with @Marssl builds download speed is much more stable.
For those of you who want to build an image yourself below is link to the code:
Keep in mind, that flashing device running on factory firmware require additional steps - othewise you may brick the device. Instructions here: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=01dcd574a24864c10a9c4df4304a3ce0da5c11a9
Here is the sysupgrade (USE AT YOUR OWN RISK)
https://drive.proton.me/urls/1C7GXZ5PQ0#Zhq1YgI2zkrF
Hello @remgodow
Thanks for providing your code.
I also gave it a try earlier in the year but couldn't get it stable enough so I reverted back to stock FW. I see that your changes are very similar to what i attempted except I based my attempt on branch openwrt-22.03 instead of master.
I think the wps led can be removed since this board does not have a dedicated WPS LED.
Also, since it's the first time i try to add support for a device, I don't know how i'm supposed to get some of the values.
For instance : How do you know the correct values for mac-address-increment.
Or the values for the HWID, HWREVADD and HWREV ?
Below is my attempt :
@Renaud11232 I think you are right about wps led, I wonder if wan_orange is usable, if not then its section could be removed as well.
I've based my code on C50 v4 DTS and commit adding support for Archer C6 v3 which has the same 5GHz chip https://github.com/openwrt/openwrt/commit/d22fb7f4fd833c420bc2ab34384862da0a6688b5,.
Initially I've replaced whole PCI configuration with C6 one. Then I figured out that 2.4GHz is on the SoC, therefore its defined in mt7628an_tplink_8m-split-uboot.dtsi. So I removed 2nd pci device, which is where my mac-address-increment comes from.
From what I remember after reading other dts files (mainly C6 v3), I believe that usually ethernet interface gets the "factory" mac from ROM, without increment.
Given the nature of TCP/IP stack I believe that mt7628an_tplink_8m-split-uboot.dtsi is bugged as both ethernet and 2.4G gets the same MAC. So my conclusion is that all interfaces should have unique MACs, and the easiest way is to increment them by 1,2... and so on.
As for the values of TPLINK_HWID, TPLINK_HWREV, TPLINK_HWREVADD - I have no clue, I've copied them from C50 v4. I think that they may be used for generating factory image and recovery image (which is not possible for our unit). They may be hidden somewhere in the oem rom or hardware datasheet.
Unfortunately my device froze an hour ago with about a day and a half uptime. I wonder if it'll occur again.
Hi, what is the current status of C50 v6 support? You wrote you managed to commit the support to the main repo? So is it available in snapshot? Thanks!
No, it is not in the main repo, I've just made a fork based on master branch of openwrt and generated snapshot builds out of it.
At that time the freezing issue have been still present, so I've flashed stock on my device.
Fortunately it may not be a problem as of today, as it seems that the MT7628 bug have been fixed - https://github.com/openwrt/openwrt/issues/10074
You could try to rebase my fork on top of current master, and check yourself.
I merged all your commits into a single commit and put it on top of the current master. There were no issues applying the combined set of your commits and I could also build an image without problems. Sources: https://github.com/jschwartzenberg/openwrt/tree/archerc50v6
Compiled images here: http://files.s-berg.nl/archer-c50-v6/
I did not test these yet. Maybe somebody can test these ahead of me. If this works I propose creating a PR to master and hopefully it can be merged.
Thanks a lot!!
@jschwart I installed your image on a fresh v6, it flashed and booted properly. 5 GHz seems to work as well (61 Mbps up, 43 Mbps down over WLAN over my 250/50 line).
One odd thing though, maybe it was just a fluke(?): I installed luci and then configured wifi over it. After setting WPA3 and a password and applying the changes, the router crashed and I had to restart it manually. WiFi 5 GHz was enabled after that as requested in luci. But could not reproduce the problem.
EDIT.: The crash occurs when enabling the 5 GHz WiFi in LuCI. A manual reboot of the device is necessary.
That's great news!! So it seems we have one known issue, but with a known workaround! Be sure to keep us informed if you run into more issues and whether things are stable further one.
@remgodow @Renaud11232 would one of you like to have the honour of creating a PR to master or shall I do it?
Feel free to do the PR - the sooner it gets into the master, the better 
I just updated the commit description to comply with the submitting requirements and rebased again against master. Could you check? I mostly copied the text from the v4 commit:
I just created the PR. It might miss some required headers related to you as the original authors, but let's see what the initial feedback is!
Please could you share the compiled images of a current build
the link shared here appears dead
Hi @ashipaek0 welcome to the forum and great you're looking at testing along!!
The above page works, but you do need to have IPv6 connectivity (I can't easily assign spare IPv4 addresses to my servers unfortunately).
I did another rebase against OpenWRT master and provided a new image on the site linked above. I also put a copy here in any you cannot access my webserver: https://liv.nl.tab.digital/s/wYsTQwpbwRYMa9S
Anybody who's testing, please let me know if I can include your name & e-mail address in a Tested-by header for the commit.
Thank you very much.
got some errors installing luci
Configuring luci-light.
Configuring luci.
Collected errors:
* pkg_hash_check_unresolved: cannot find dependency kernel (= 5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25) for kmod-nf-ipt
* pkg_hash_fetch_best_installation_candidate: Packages for kmod-nf-ipt found, but incompatible with the architectures configured
* pkg_hash_check_unresolved: cannot find dependency kernel (= 5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25) for kmod-ipt-core
* pkg_hash_fetch_best_installation_candidate: Packages for kmod-ipt-core found, but incompatible with the architectures configured
* pkg_hash_check_unresolved: cannot find dependency kernel (= 5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25) for kmod-ipt-conntrack
* pkg_hash_fetch_best_installation_candidate: Packages for kmod-ipt-conntrack found, but incompatible with the architectures configured
* pkg_hash_check_unresolved: cannot find dependency kernel (= 5.15.132-1-993c4b695a7624047a1e8e8d6bad2b25) for kmod-ipt-nat
* pkg_hash_fetch_best_installation_candidate: Packages for kmod-ipt-nat found, but incompatible with the architectures configured
Yeah.
I can't install any software.
Seems I didn't include the kernel when flashing, but in my defence that's because the instructions I saw for v4 didn't mention the kernel
Please how do I correct this error?
I really need to install wireguard
In my experience installing packages with custom builds is always tricky. This should be easier once we have the PR merged and the device is officially supported.
Most likely you did. What you are actually missing according to the error messages are certain module packages that are specific to the kernel of this image.
There are two ways. One variant is to wait for official support. For this we need to get the PR merged and wait for an official release that includes the commit with device support. For this any testing and findings you have with the current image (without extra software) is really useful.
Your other option would be to build your own image. Then you can just incorporate WireGuard as part of the build process.
Noted.
I'm sure you can tell I'm a noob in these things, I don't have the skills or knowledge.
So could you do me the favor of building one with wireguard in it as a one-off favor.?
It is literally the reason I searched for the custom firmware because I need to use a VPN on router level.
Thank you