R8000 Frequent crashes, Kernel errors

Hi all, apologies in advance if I'm doing anything wrong, this is my first time posting here, relative new OpenWRT user. If I can provide any other information, please do let me know. My Nighthawk X6 R8000 (running OpenWrt 22.03.2 r19803-9a599fee93) is behaving very oddly, just got it and set it up about a week and a half ago. The device becomes completely unresponsive until a reboot, both LAN and WAN connections drop (though Wi-Fi is still picked up by capable devices and is just detected to offer no internet).
The crash appears to happen at random, if anything, it seems to happen under minimum load, about once, maybe twice a day.

Regarding my network setup, I am hosting a Jellyfin server on my local network but as far as I've seen, it has never been streaming content at the time of the crash. I am using this guide to run an EA6350 V4 to offer LAN to some wired-only devices in another room, and that appears to only fail when the primary router crashes. I have openVPN and dynamic DNS (for the Jellyfin server) installed and configured on the main router, though the issue has been present since before that was set up. It's my understanding that none of this setup should be causing these issues.

The logs below are from the crash that occurred last night as I was asleep. I've pasted the log.txt, but the log.txt_old indicates that this goes back as early as Fri Jan 6 15:01:39 2023, and unless my understanding of the logs is incorrect, likely earlier as log.txt_old is filled with with essentially the same as what's pasted below.

Fri Jan  6 15:22:31 2023 kern.err kernel: [149143.730408] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:22:31 2023 kern.err kernel: [149143.739814] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:22:37 2023 kern.err kernel: [149149.750327] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:22:37 2023 kern.err kernel: [149149.759747] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:22:43 2023 kern.err kernel: [149155.772228] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:22:43 2023 kern.err kernel: [149155.780438] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:22:49 2023 kern.err kernel: [149161.792152] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:22:49 2023 kern.err kernel: [149161.800358] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:22:55 2023 kern.err kernel: [149167.809106] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:22:55 2023 kern.err kernel: [149167.817353] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:01 2023 kern.err kernel: [149173.831731] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:01 2023 kern.err kernel: [149173.841136] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:07 2023 kern.err kernel: [149179.851861] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:07 2023 kern.err kernel: [149179.860072] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:09 2023 kern.err kernel: [149181.966133] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:09 2023 kern.err kernel: [149181.975530] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:09 2023 kern.err kernel: [149181.983803] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:23:13 2023 kern.err kernel: [149185.867104] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:13 2023 kern.err kernel: [149185.875347] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:19 2023 kern.err kernel: [149191.889318] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:19 2023 kern.err kernel: [149191.898727] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:25 2023 kern.err kernel: [149197.907636] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:25 2023 kern.err kernel: [149197.917062] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:31 2023 kern.err kernel: [149203.931205] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:31 2023 kern.err kernel: [149203.940622] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:37 2023 kern.err kernel: [149209.951403] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:37 2023 kern.err kernel: [149209.959617] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:43 2023 kern.err kernel: [149215.967837] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:43 2023 kern.err kernel: [149215.977246] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:49 2023 kern.err kernel: [149221.990168] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:49 2023 kern.err kernel: [149221.999579] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:55 2023 kern.err kernel: [149228.008374] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:55 2023 kern.err kernel: [149228.017779] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:23:56 2023 kern.err kernel: [149229.065942] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:56 2023 kern.err kernel: [149229.075339] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:23:56 2023 kern.err kernel: [149229.083635] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:24:01 2023 kern.err kernel: [149234.029287] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:01 2023 kern.err kernel: [149234.037539] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:07 2023 kern.err kernel: [149240.049237] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:07 2023 kern.err kernel: [149240.058653] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:13 2023 kern.err kernel: [149246.065751] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:13 2023 kern.err kernel: [149246.075154] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:19 2023 kern.err kernel: [149252.088012] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:19 2023 kern.err kernel: [149252.096258] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:25 2023 kern.err kernel: [149258.106043] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:25 2023 kern.err kernel: [149258.114293] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:27 2023 kern.err kernel: [149260.330616] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:27 2023 kern.err kernel: [149260.338831] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:27 2023 kern.err kernel: [149260.348221] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:24:31 2023 kern.err kernel: [149264.125715] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:31 2023 kern.err kernel: [149264.135121] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:37 2023 kern.err kernel: [149270.146898] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:37 2023 kern.err kernel: [149270.156310] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:42 2023 kern.err kernel: [149275.087467] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:42 2023 kern.err kernel: [149275.096872] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:42 2023 kern.err kernel: [149275.105151] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:24:43 2023 kern.err kernel: [149276.164841] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:43 2023 kern.err kernel: [149276.174247] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:49 2023 kern.err kernel: [149282.182505] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:49 2023 kern.err kernel: [149282.191911] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:24:55 2023 kern.err kernel: [149288.200190] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:24:55 2023 kern.err kernel: [149288.208433] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:01 2023 kern.err kernel: [149294.220107] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:01 2023 kern.err kernel: [149294.228316] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:07 2023 kern.err kernel: [149300.240008] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:07 2023 kern.err kernel: [149300.248219] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:13 2023 kern.err kernel: [149306.257745] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:13 2023 kern.err kernel: [149306.265994] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:19 2023 kern.err kernel: [149312.273483] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:19 2023 kern.err kernel: [149312.282899] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:25 2023 kern.err kernel: [149318.292916] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:25 2023 kern.err kernel: [149318.301164] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:31 2023 kern.err kernel: [149324.309635] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:31 2023 kern.err kernel: [149324.317843] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:37 2023 kern.err kernel: [149330.329096] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:37 2023 kern.err kernel: [149330.337346] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:43 2023 kern.err kernel: [149336.346020] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:43 2023 kern.err kernel: [149336.355439] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:49 2023 kern.err kernel: [149342.369352] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:49 2023 kern.err kernel: [149342.377563] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:25:55 2023 kern.err kernel: [149348.384880] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:25:55 2023 kern.err kernel: [149348.394290] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:02 2023 kern.err kernel: [149354.407375] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:02 2023 kern.err kernel: [149354.416789] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:08 2023 kern.err kernel: [149360.427747] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:08 2023 kern.err kernel: [149360.437156] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:14 2023 kern.err kernel: [149366.445776] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:14 2023 kern.err kernel: [149366.455183] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:20 2023 kern.err kernel: [149372.468189] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:20 2023 kern.err kernel: [149372.476437] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:23 2023 kern.err kernel: [149376.050945] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:23 2023 kern.err kernel: [149376.060367] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:23 2023 kern.err kernel: [149376.068650] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:26:26 2023 kern.err kernel: [149378.485003] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:26 2023 kern.err kernel: [149378.494419] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:32 2023 kern.err kernel: [149384.508394] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:32 2023 kern.err kernel: [149384.516643] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:38 2023 kern.err kernel: [149390.528601] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:38 2023 kern.err kernel: [149390.536864] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:44 2023 kern.err kernel: [149396.544266] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:44 2023 kern.err kernel: [149396.553692] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:50 2023 kern.err kernel: [149402.567587] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:50 2023 kern.err kernel: [149402.575833] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:26:56 2023 kern.err kernel: [149408.585124] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:26:56 2023 kern.err kernel: [149408.594547] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:02 2023 kern.err kernel: [149414.606546] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:02 2023 kern.err kernel: [149414.615956] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:08 2023 kern.err kernel: [149420.626985] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:08 2023 kern.err kernel: [149420.635229] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:10 2023 kern.err kernel: [149422.663125] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:10 2023 kern.err kernel: [149422.672527] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:10 2023 kern.err kernel: [149422.680801] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:27:14 2023 kern.err kernel: [149426.642981] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:14 2023 kern.err kernel: [149426.651233] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:20 2023 kern.err kernel: [149432.664698] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:20 2023 kern.err kernel: [149432.674110] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:20 2023 kern.err kernel: [149432.888380] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:20 2023 kern.err kernel: [149432.896632] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:20 2023 kern.err kernel: [149432.904862] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:27:26 2023 kern.err kernel: [149438.684797] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:26 2023 kern.err kernel: [149438.694203] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:32 2023 kern.err kernel: [149444.707052] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:32 2023 kern.err kernel: [149444.716469] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:38 2023 kern.err kernel: [149450.727665] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:38 2023 kern.err kernel: [149450.735963] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:40 2023 kern.err kernel: [149453.144138] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:40 2023 kern.err kernel: [149453.153552] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:40 2023 kern.err kernel: [149453.161837] ieee80211 phy1: brcmf_cfg80211_get_station: GET STA INFO failed, -12
Fri Jan  6 15:27:44 2023 kern.err kernel: [149456.745585] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:44 2023 kern.err kernel: [149456.754991] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:50 2023 kern.err kernel: [149462.767481] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:50 2023 kern.err kernel: [149462.775687] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)
Fri Jan  6 15:27:56 2023 kern.err kernel: [149468.787382] ieee80211 phy1: brcmf_msgbuf_tx_ioctl: Failed to reserve space in commonring
Fri Jan  6 15:27:56 2023 kern.err kernel: [149468.795591] brcmfmac: brcmf_cfg80211_dump_survey: chanspec failed (-12)

Welcome to the beautiful world of Broadcom wifi.

1 Like

Hi frollic, thank you for your quick response.
I saw that warning but didn't think much of it due to the notice below it that reads:

NOTE: The hardware in this device is a bit of an exception to the above: the wireless devices are fully supported by the in-kernel brcmfmac driver and work well.

I've looked more into the details with the brcmfmac driver, I'll likely be making a switch to dd-wrt because of it. Thank you for pointing that out. and for the time you spend in these support forums. Have a great remainder of your day!