Merge pull request #3482 from holta/rpi-wifi-firmware3

Set WiFi firmware in /lib/firmware/cypress due to RasPiOS & Ubuntu changes

roles/firmware/tasks/download.yml

@@ -1,23 +1,39 @@
-- name: Back up 4 OS-provided WiFi firmware files (or symlinks) to /lib/firmware/brcm/*.orig
+# 2023-02-25: MONITOR FIRMWARE UPDATES in 3 places especially...
-  copy:
+#
-    src: /lib/firmware/brcm/{{ item }}
+# 1. apt changelog firmware-brcm80211
-    dest: /lib/firmware/brcm/{{ item }}.orig
+#    https://github.com/RPi-Distro/firmware-nonfree -> debian/config/brcm80211 (brcm, cypress)
+#    https://archive.raspberrypi.org/debian/dists/bullseye/main/binary-arm64/Packages (1.1MB text file, look inside for summary of latest firmware-brcm80211)
+#    https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/ -> firmware-brcm80211_* e.g.:
+#    https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/firmware-brcm80211_20190114-1+rpt11_all.deb from 2021-01-25
+#    https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/firmware-brcm80211_20210315-3+rpt4_all.deb from 2021-12-06
+#    https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/firmware-brcm80211_20221012-1~bpo11+1+rpt1_all.deb from 2022-11-17
+# 2. apt changelog linux-firmware-raspi
+#    https://packages.ubuntu.com/search?keywords=linux-firmware-raspi
+# 3. https://github.com/moodlebox/moodlebox/blob/main/roles/accesspoint/tasks/main.yml
+
+#- name: Back up 4 OS-provided WiFi firmware files (incl symlink contents) to /lib/firmware/cypress/*.orig
+- name: Back up 4 OS-provided WiFi firmware files (replicate any symlinks) to /lib/firmware/cypress/*.orig -- /usr/bin/iiab-check-firmware will later do similar (e.g. as firmware install completes) -- moving 2-or-4 of these to <ORIGINAL FILENAME>.YYYY-MM-DD-HH:MM:SS ("doubly timestamping" to preserve BOTH last-modif & moving date)
+  # copy:
+  #   src: /lib/firmware/cypress/{{ item }}
+  #   dest: /lib/firmware/cypress/{{ item }}.orig
+  #   #local_follow: False    # FAILS TO PRESERVE LINKS (ansible/ansible#74777) e.g. /lib/firmware/cypress/cyfmac43455-sdio.bin -> /etc/alternatives/cyfmac43455-sdio.bin -> ...
+  command: cp -a /lib/firmware/cypress/{{ item }} /lib/firmware/cypress/{{ item }}.orig    # "cp -P" == "cp --no-dereference" sufficient to replicate these symlinks and files ("cp -d" & "cp -a" are incrementally stronger, and so probably can't hurt)
   with_items:
-    - brcmfmac43430-sdio.bin
+    - cyfmac43430-sdio.bin
-    - brcmfmac43430-sdio.clm_blob
+    - cyfmac43430-sdio.clm_blob
-    - brcmfmac43455-sdio.bin
+    - cyfmac43455-sdio.bin
-    - brcmfmac43455-sdio.clm_blob
+    - cyfmac43455-sdio.clm_blob
-  ignore_errors: yes
+  #ignore_errors: yes    # 2023-02-25: Let's INTENTIONALLY surface any errors, e.g. if any future RasPiOS or Ubuntu-on-Rpi lack some of the above 4 files/links?
 
 - name: Download higher-capacity firmwares (for RPi internal WiFi, per https://github.com/iiab/iiab/issues/823#issuecomment-662285202 and https://github.com/iiab/iiab/issues/2853)
   get_url:
     url: "{{ iiab_download_url }}/{{ item }}"
-    dest: /lib/firmware/brcm/
+    dest: /lib/firmware/cypress/
     timeout: "{{ download_timeout }}"
   with_items:
-    - brcmfmac43455-sdio.bin_2021-11-30_minimal                # 19 -- from https://github.com/RPi-Distro/firmware-nonfree/blob/feeeda21e930c2e182484e8e1269b61cca2a8451/debian/config/brcm80211/cypress/cyfmac43455-sdio-minimal.bin
+    - brcmfmac43455-sdio.bin_2021-11-30_minimal                # 19 -- SAME AS RASPIOS & UBUNTU'S https://github.com/RPi-Distro/firmware-nonfree/blob/feeeda21e930c2e182484e8e1269b61cca2a8451/debian/config/brcm80211/cypress/cyfmac43455-sdio-minimal.bin
     - brcmfmac43455-sdio.bin_2021-10-05_3rd-trial-minimal      # 24 -- from https://github.com/iiab/iiab/issues/2853#issuecomment-934293015
-    - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi               # Works w/ both above -- from https://github.com/RPi-Distro/firmware-nonfree/blob/dc406650e840705957f8403efeacf71d2d7543b3/debian/config/brcm80211/cypress/cyfmac43455-sdio.clm_blob
+    - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi               # Works w/ both above -- SAME AS RASPIOS & UBUNTU'S https://github.com/RPi-Distro/firmware-nonfree/blob/dc406650e840705957f8403efeacf71d2d7543b3/debian/config/brcm80211/cypress/cyfmac43455-sdio.clm_blob
     - brcmfmac43455-sdio.bin_2015-03-01_7.45.18.0_ub19.10.1    # 32 -- from https://github.com/iiab/iiab/issues/823#issuecomment-662285202
     - brcmfmac43455-sdio.clm_blob_2018-02-26_rpi
     - brcmfmac43430-sdio.bin_2018-09-11_7.45.98.65             # 30 -- from https://github.com/iiab/iiab/issues/823#issuecomment-662285202

roles/firmware/tasks/install.yml

@@ -4,61 +4,69 @@
 
 
 # Set 2 symlinks for RPi 3 B+ and 4 (43455)
+# COMPARE: update-alternatives --display cyfmac43455-sdio.bin
+# https://github.com/moodlebox/moodlebox/blob/main/roles/accesspoint/tasks/main.yml#L3-L6
 
-- name: Populate rpi3bplus_rpi4_wifi_firmwares dictionary (lookup table for operator-chosen .bin and .clm_blob files in /lib/firmware/brcm)
+- name: Populate rpi3bplus_rpi4_wifi_firmwares dictionary (lookup table for operator-chosen .bin and .clm_blob files in /lib/firmware/cypress)
   set_fact:
     rpi3bplus_rpi4_wifi_firmwares:    # Dictionary keys (left side) are always strings, e.g. "19"
       os:
-        - brcmfmac43455-sdio.bin.orig
+        - cyfmac43455-sdio.bin.orig             # 2023-02-25: 7.45.241 from 2021-11-01 on Ubuntu 22.04.2 too (cyfmac43455-sdio-standard.bin)
-        - brcmfmac43455-sdio.clm_blob.orig
+        - cyfmac43455-sdio.clm_blob.orig        # On Ubuntu 22.04.2 too (brcmfmac43455-sdio.clm_blob_2021-11-17_rpi)
+      ub:
+        - cyfmac43455-sdio.bin.distrib          # 2023-02-25: STALE 7.45.234 from 2021-04-15; on Ubuntu 22.04.2 NOT RasPiOS
+        - cyfmac43455-sdio.clm_blob.distrib     # 4.7K instead of 2.7K w/ above "os"
       19:
-        - brcmfmac43455-sdio.bin_2021-11-30_minimal
+        - brcmfmac43455-sdio.bin_2021-11-30_minimal     # On Ubuntu 22.04.2 too (cyfmac43455-sdio-minimal.bin)
-        - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi
+        - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi    # On Ubuntu 22.04.2 too (cyfmac43455-sdio.clm_blob)
       24:
         - brcmfmac43455-sdio.bin_2021-10-05_3rd-trial-minimal
-        - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi
+        - brcmfmac43455-sdio.clm_blob_2021-11-17_rpi    # On Ubuntu 22.04.2 too (cyfmac43455-sdio.clm_blob)
       32:
         - brcmfmac43455-sdio.bin_2015-03-01_7.45.18.0_ub19.10.1
-        - brcmfmac43455-sdio.clm_blob_2018-02-26_rpi
+        - brcmfmac43455-sdio.clm_blob_2018-02-26_rpi    # 14K instead of 2.7K w/ above "os"
 
-- name: Symlink /lib/firmware/brcm/brcmfmac43455-sdio.bin.iiab -> {{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][0] }} (as rpi3bplus_rpi4_wifi_firmware is "{{ rpi3bplus_rpi4_wifi_firmware }}")
+- name: Symlink /lib/firmware/cypress/cyfmac43455-sdio.bin.iiab -> {{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][0] }} (as rpi3bplus_rpi4_wifi_firmware is "{{ rpi3bplus_rpi4_wifi_firmware }}")
   file:
     src: "{{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][0] }}"
-    path: /lib/firmware/brcm/brcmfmac43455-sdio.bin.iiab
+    path: /lib/firmware/cypress/cyfmac43455-sdio.bin.iiab
     state: link
     force: yes
 
-- name: Symlink /lib/firmware/brcm/brcmfmac43455-sdio.clm_blob.iiab -> {{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][1] }} (as rpi3bplus_rpi4_wifi_firmware is "{{ rpi3bplus_rpi4_wifi_firmware }}")
+- name: Symlink /lib/firmware/cypress/cyfmac43455-sdio.clm_blob.iiab -> {{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][1] }} (as rpi3bplus_rpi4_wifi_firmware is "{{ rpi3bplus_rpi4_wifi_firmware }}")
   file:
     src: "{{ rpi3bplus_rpi4_wifi_firmwares[rpi3bplus_rpi4_wifi_firmware][1] }}"
-    path: /lib/firmware/brcm/brcmfmac43455-sdio.clm_blob.iiab
+    path: /lib/firmware/cypress/cyfmac43455-sdio.clm_blob.iiab
     state: link
     force: yes
 
 
 # Set 2 symlinks for RPi Zero W and 3 (43430)
 
-- name: Populate rpizerow_rpi3_wifi_firmwares dictionary (lookup table for operator-chosen .bin and .clm_blob files in /lib/firmware/brcm)
+- name: Populate rpizerow_rpi3_wifi_firmwares dictionary (lookup table for operator-chosen .bin and .clm_blob files in /lib/firmware/cypress)
   set_fact:
     rpizerow_rpi3_wifi_firmwares:
       os:
-        - brcmfmac43430-sdio.bin.orig
+        - cyfmac43430-sdio.bin.orig            # 2023-02-25: 7.45.98 from 2021-07-19 on Ubuntu 22.04.2 too
-        - brcmfmac43430-sdio.clm_blob.orig
+        - cyfmac43430-sdio.clm_blob.orig       # On Ubuntu 22.04.2 too
+      ub:
+        - cyfmac43430-sdio.bin.distrib         # 2023-02-25: STALE 7.45.98.118 from 2021-03-30; on Ubuntu 22.04.2 NOT RasPiOS
+        - cyfmac43430-sdio.clm_blob.distrib    # Identical to above 4.7K cyfmac43430-sdio.clm_blob
       30:
         - brcmfmac43430-sdio.bin_2018-09-11_7.45.98.65
-        - brcmfmac43430-sdio.clm_blob_2018-09-11_7.45.98.65
+        - brcmfmac43430-sdio.clm_blob_2018-09-11_7.45.98.65    # 14K instead of 4.7K w/ above "os" & "ub"
 
-- name: Symlink /lib/firmware/brcm/brcmfmac43430-sdio.bin.iiab -> {{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][0] }} (as rpizerow_rpi3_wifi_firmware is "{{ rpizerow_rpi3_wifi_firmware }}")
+- name: Symlink /lib/firmware/cypress/cyfmac43430-sdio.bin.iiab -> {{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][0] }} (as rpizerow_rpi3_wifi_firmware is "{{ rpizerow_rpi3_wifi_firmware }}")
   file:
     src: "{{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][0] }}"
-    path: /lib/firmware/brcm/brcmfmac43430-sdio.bin.iiab
+    path: /lib/firmware/cypress/cyfmac43430-sdio.bin.iiab
     state: link
     force: yes
 
-- name: Symlink /lib/firmware/brcm/brcmfmac43430-sdio.clm_blob.iiab -> {{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][1] }} (as rpizerow_rpi3_wifi_firmware is "{{ rpizerow_rpi3_wifi_firmware }}")
+- name: Symlink /lib/firmware/cypress/cyfmac43430-sdio.clm_blob.iiab -> {{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][1] }} (as rpizerow_rpi3_wifi_firmware is "{{ rpizerow_rpi3_wifi_firmware }}")
   file:
     src: "{{ rpizerow_rpi3_wifi_firmwares[rpizerow_rpi3_wifi_firmware][1] }}"
-    path: /lib/firmware/brcm/brcmfmac43430-sdio.clm_blob.iiab
+    path: /lib/firmware/cypress/cyfmac43430-sdio.clm_blob.iiab
     state: link
     force: yes
 
@@ -73,7 +81,7 @@
     - { src: 'iiab-check-firmware.service', dest: '/etc/systemd/system/', mode: '0644' }
     - { src: 'iiab-firmware-warn.sh', dest: '/etc/profile.d/', mode: '0644' }
 
-- name: Enable & (Re)Start iiab-check-firmware.service (also runs on each boot)
+- name: Enable & (Re)Start iiab-check-firmware.service (also runs on each boot) -- finalizing 2-or-4 symlink chains e.g. /lib/firmware/cypress/X.{bin|blob} -> /lib/firmware/cypress/X.{bin|blob}.iiab -> CHOSEN-FIRMWARE-FILE-OR-LINK
   systemd:
     name: iiab-check-firmware.service
     daemon_reload: yes

roles/firmware/tasks/main.yml

@@ -3,18 +3,22 @@
 # client devices that can access your Raspberry Pi's internal WiFi hotspot.
 
 # If IIAB's already installed, you should then run 'cd /opt/iiab/iiab' and
-# then 'sudo ./runrole firmware' (do run iiab-check-firmware for more tips!)
+# then 'sudo ./runrole firmware' (DO RUN iiab-check-firmware FOR MORE TIPS!)
-
-# BACKGROUND AS OF 2022-01-10:
-# https://github.com/iiab/iiab/issues/823#issuecomment-662285202
-# https://github.com/iiab/iiab/issues/2853#issuecomment-957836892
-# https://github.com/iiab/iiab/pull/3103
-# https://github.com/RPi-Distro/firmware-nonfree/tree/bullseye/debian/config/brcm80211 (brcm, cypress)
-# https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/firmware-brcm80211_20190114-1+rpt11_all.deb from 2021-01-25
-# https://archive.raspberrypi.org/debian/pool/main/f/firmware-nonfree/firmware-brcm80211_20210315-3+rpt4_all.deb from 2021-12-06
 
+# 2018-2023 Background & Progress:
+#
+# Raspberry Pi 3 used to support 32 WiFi connections but is now limited to [4-10]
+#     https://github.com/iiab/iiab/issues/823#issuecomment-662285202
+# Opinions about Pi 4B/3B+ WiFi features [practical AP firmware for schools!]
+#     https://github.com/iiab/iiab/issues/2853#issuecomment-957836892
+# RPi WiFi hotspot firmware reliability fix, incl new/better choices for 3B+ & 4
+#     https://github.com/iiab/iiab/pull/3103
+# Set WiFi firmware in /lib/firmware/cypress due to RasPiOS & Ubuntu changes
+#     https://github.com/iiab/iiab/pull/3482
 # RISK: What USB 3.0 stick/drive patterns degrade a Raspberry Pi's 2.4GHz WiFi?
-# https://github.com/iiab/iiab/issues/2638
+#     https://github.com/iiab/iiab/issues/2638
+
+# ► SEE "MONITOR FIRMWARE UPDATES in 3 places especially" in tasks/download.yml ◄
 
 - name: Install firmware (for RPi internal WiFi)
   include_tasks: install.yml

roles/firmware/templates/iiab-check-firmware

@@ -1,10 +1,24 @@
 #!/bin/bash
 
-# 2021-08-18: bash scripts using default_vars.yml &/or local_vars.yml
+# The 1st time /usr/bin/iiab-check-firmware runs (at the end of
+# firmware/tasks/install.yml) 2-4 lynchpin top links are put in place,
+# finalizing symlink chains like:
+#
+#     /lib/firmware/cypress/X.{bin|blob} ->
+#     /lib/firmware/cypress/X.{bin|blob}.iiab ->
+#     CHOSEN-FIRMWARE-FILE-OR-LINK
+#
+# Also backing up top-of-chain originals (file or link!) by moving these to:
+#
+#     /lib/firmware/cypress/<ORIGINAL FILENAME>.YYYY-MM-DD-HH:MM:SS
+#
+# NOTE these are "doubly timestamped" to preserve BOTH last-modif & moving date.
+
+# 2023-02-25: bash scripts using default_vars.yml &/or local_vars.yml
 # https://github.com/iiab/iiab-factory/blob/master/iiab
 # https://github.com/iiab/iiab/blob/master/roles/firmware/templates/iiab-check-firmware#L10-14
 # https://github.com/iiab/iiab/blob/master/roles/network/templates/gateway/iiab-gen-iptables#L48-L52
-# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L25-L34
+# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L23-L39
 # https://github.com/iiab/iiab/blob/master/roles/openvpn/templates/iiab-support READS AND WRITES, INCL NON-BOOLEAN
 
 iiab_var_value() {
@@ -14,29 +28,29 @@ iiab_var_value() {
 }
 
 link_fw() {
-    if [[ $(readlink /lib/firmware/brcm/$1) != $1.iiab ]] ; then
+    if [[ $(readlink /lib/firmware/cypress/$1) != $1.iiab ]] ; then
-	echo
+        echo
-	mv /lib/firmware/brcm/$1 /lib/firmware/brcm/$1.$(date +%F-%T)
+        mv /lib/firmware/cypress/$1 /lib/firmware/cypress/$1.$(date +%F-%T)
-	ln -s $1.iiab /lib/firmware/brcm/$1
+        ln -s $1.iiab /lib/firmware/cypress/$1
-	echo -e "\e[1mSymlinked /lib/firmware/brcm/$1 -> $1.iiab\e[0m"
+        echo -e "\e[1mSymlinked /lib/firmware/cypress/$1 -> $1.iiab\e[0m"
-	touch /tmp/.fw_modified
+        touch /tmp/.fw_modified
     fi
 }
 
 if [[ $(iiab_var_value rpi3bplus_rpi4_wifi_firmware) != "os" ]] ; then
-    link_fw brcmfmac43455-sdio.bin
+    link_fw cyfmac43455-sdio.bin
-    link_fw brcmfmac43455-sdio.clm_blob
+    link_fw cyfmac43455-sdio.clm_blob
 fi
 
 if [[ $(iiab_var_value rpizerow_rpi3_wifi_firmware) != "os" ]] ; then
-    link_fw brcmfmac43430-sdio.bin
+    link_fw cyfmac43430-sdio.bin
-    link_fw brcmfmac43430-sdio.clm_blob
+    link_fw cyfmac43430-sdio.clm_blob
 fi
 
 if [ -f /tmp/.fw_modified ]; then
     bash /etc/profile.d/iiab-firmware-warn.sh
 else
-    echo -e "\n\e[1mWiFi Firmware links in /lib/firmware/brcm appear \e[92mCORRECT\e[0m\e[1m, per iiab/iiab#2853.\e[0m"
+    echo -e "\n\e[1mWiFi Firmware links in /lib/firmware/cypress appear \e[92mCORRECT\e[0m\e[1m, per iiab/iiab#3482\e[0m"
     echo
     echo -e "\e[100;1m(No reboot appears necessary!)\e[0m"
     echo

roles/firmware/templates/iiab-firmware-warn.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [ -f /tmp/.fw_modified ]; then
-    echo -e "\n\e[41;1mWiFi Firmware link(s) modified, per iiab/iiab#2853: PLEASE REBOOT!\e[0m"
+    echo -e "\n\e[41;1mWiFi Firmware link(s) modified, per iiab/iiab#3482: PLEASE REBOOT!\e[0m"
     echo
     echo -e "If you want this warning to stop, reboot to remove /tmp/.fw_modified\n"
 fi

roles/network/templates/gateway/iiab-gen-iptables

@@ -34,11 +34,11 @@ IPTABLES=/usr/sbin/iptables
 IPTABLES_DATA=/etc/sysconfig/iptables
 {% endif %}
 
-# 2021-08-18: bash scripts using default_vars.yml &/or local_vars.yml
+# 2023-02-25: bash scripts using default_vars.yml &/or local_vars.yml
 # https://github.com/iiab/iiab-factory/blob/master/iiab
 # https://github.com/iiab/iiab/blob/master/roles/firmware/templates/iiab-check-firmware#L10-14
 # https://github.com/iiab/iiab/blob/master/roles/network/templates/gateway/iiab-gen-iptables#L48-L52
-# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L25-L34
+# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L23-L39
 # https://github.com/iiab/iiab/blob/master/roles/openvpn/templates/iiab-support READS AND WRITES, INCL NON-BOOLEAN
 
 # "awk '{print $2}'" almost works, but: (1) Fails to remove outer quotes, and

roles/openvpn/templates/iiab-support

@@ -10,11 +10,11 @@ DEBUG=false    # Using /usr/bin/true or /usr/bin/false
 PLAYBOOK="install-support.yml"
 INVENTORY="ansible_hosts"
 
-# 2021-08-18: bash scripts using default_vars.yml &/or local_vars.yml
+# 2023-02-25: bash scripts using default_vars.yml &/or local_vars.yml
 # https://github.com/iiab/iiab-factory/blob/master/iiab
 # https://github.com/iiab/iiab/blob/master/roles/firmware/templates/iiab-check-firmware#L10-14
 # https://github.com/iiab/iiab/blob/master/roles/network/templates/gateway/iiab-gen-iptables#L48-L52
-# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L25-L34
+# https://github.com/iiab/maps/blob/master/osm-source/pages/viewer/scripts/iiab-install-map-region#L23-L39
 # https://github.com/iiab/iiab/blob/master/roles/openvpn/templates/iiab-support READS AND WRITES, INCL NON-BOOLEAN
 
 # PARSE local_vars.yml JUST AS Ansible & /etc/openvpn/scripts/announcer DO:

vars/default_vars.yml

@@ -131,9 +131,10 @@ hostapd_enabled: True
 
 # Raspberry Pi 3 B+ and 4 OS's don't allow more than ~4 students to use the
 # internal WiFi hotspot.  Increase this to 19 or 24 student WiFi devices (or
-# 32 on older OS's from 2020) using EXACTLY 1 of the 4 lines below:
+# 32 on older OS's from 2020) using EXACTLY 1 of the 5 lines below:
 #
 #rpi3bplus_rpi4_wifi_firmware: os    # Use your OS's WiFi firmware e.g. 7.45.241
+#rpi3bplus_rpi4_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.234
 rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 #rpi3bplus_rpi4_wifi_firmware: 24    # REQUIRES "wifi_up_down: False" BELOW!
 #rpi3bplus_rpi4_wifi_firmware: 32    # UNRELIABLE (INTERMITTENT) with 2021+ OS's
@@ -143,7 +144,8 @@ rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 # Raspberry Pi Zero W and 3 OS's don't allow more than ~10 students to use the
 # internal WiFi hotspot.  Or try increasing this to 30 student WiFi devices:
 #
-rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98.118
+rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98
+#rpizerow_rpi3_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.98.118
 #rpizerow_rpi3_wifi_firmware: 30    # Or firmware 7.45.98.65 from 2018-09-28
 
 wifi_up_down: True    # AP+STA mode: Uses "ap0" WiFi adapter for upstream WiFi

vars/local_vars_large.yml

@@ -74,9 +74,10 @@ hostapd_password: changeme    # espec if WiFi firmware patched below?  #2696
 
 # Raspberry Pi 3 B+ and 4 OS's don't allow more than ~4 students to use the
 # internal WiFi hotspot.  Increase this to 19 or 24 student WiFi devices (or
-# 32 on older OS's from 2020) using EXACTLY 1 of the 4 lines below:
+# 32 on older OS's from 2020) using EXACTLY 1 of the 5 lines below:
 #
 #rpi3bplus_rpi4_wifi_firmware: os    # Use your OS's WiFi firmware e.g. 7.45.241
+#rpi3bplus_rpi4_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.234
 rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 #rpi3bplus_rpi4_wifi_firmware: 24    # REQUIRES "wifi_up_down: False" BELOW!
 #rpi3bplus_rpi4_wifi_firmware: 32    # UNRELIABLE (INTERMITTENT) with 2021+ OS's
@@ -86,7 +87,8 @@ rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 # Raspberry Pi Zero W and 3 OS's don't allow more than ~10 students to use the
 # internal WiFi hotspot.  Or try increasing this to 30 student WiFi devices:
 #
-rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98.118
+rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98
+#rpizerow_rpi3_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.98.118
 #rpizerow_rpi3_wifi_firmware: 30    # Or firmware 7.45.98.65 from 2018-09-28
 
 wifi_up_down: True    # AP+STA mode: Uses "ap0" WiFi adapter for upstream WiFi

vars/local_vars_medium.yml

@@ -74,9 +74,10 @@ hostapd_password: changeme    # espec if WiFi firmware patched below?  #2696
 
 # Raspberry Pi 3 B+ and 4 OS's don't allow more than ~4 students to use the
 # internal WiFi hotspot.  Increase this to 19 or 24 student WiFi devices (or
-# 32 on older OS's from 2020) using EXACTLY 1 of the 4 lines below:
+# 32 on older OS's from 2020) using EXACTLY 1 of the 5 lines below:
 #
 #rpi3bplus_rpi4_wifi_firmware: os    # Use your OS's WiFi firmware e.g. 7.45.241
+#rpi3bplus_rpi4_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.234
 rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 #rpi3bplus_rpi4_wifi_firmware: 24    # REQUIRES "wifi_up_down: False" BELOW!
 #rpi3bplus_rpi4_wifi_firmware: 32    # UNRELIABLE (INTERMITTENT) with 2021+ OS's
@@ -86,7 +87,8 @@ rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 # Raspberry Pi Zero W and 3 OS's don't allow more than ~10 students to use the
 # internal WiFi hotspot.  Or try increasing this to 30 student WiFi devices:
 #
-rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98.118
+rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98
+#rpizerow_rpi3_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.98.118
 #rpizerow_rpi3_wifi_firmware: 30    # Or firmware 7.45.98.65 from 2018-09-28
 
 wifi_up_down: True    # AP+STA mode: Uses "ap0" WiFi adapter for upstream WiFi

vars/local_vars_small.yml

@@ -74,9 +74,10 @@ hostapd_password: changeme    # espec if WiFi firmware patched below?  #2696
 
 # Raspberry Pi 3 B+ and 4 OS's don't allow more than ~4 students to use the
 # internal WiFi hotspot.  Increase this to 19 or 24 student WiFi devices (or
-# 32 on older OS's from 2020) using EXACTLY 1 of the 4 lines below:
+# 32 on older OS's from 2020) using EXACTLY 1 of the 5 lines below:
 #
 #rpi3bplus_rpi4_wifi_firmware: os    # Use your OS's WiFi firmware e.g. 7.45.241
+#rpi3bplus_rpi4_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.234
 rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 #rpi3bplus_rpi4_wifi_firmware: 24    # REQUIRES "wifi_up_down: False" BELOW!
 #rpi3bplus_rpi4_wifi_firmware: 32    # UNRELIABLE (INTERMITTENT) with 2021+ OS's
@@ -86,7 +87,8 @@ rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 # Raspberry Pi Zero W and 3 OS's don't allow more than ~10 students to use the
 # internal WiFi hotspot.  Or try increasing this to 30 student WiFi devices:
 #
-rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98.118
+rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98
+#rpizerow_rpi3_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.98.118
 #rpizerow_rpi3_wifi_firmware: 30    # Or firmware 7.45.98.65 from 2018-09-28
 
 wifi_up_down: True    # AP+STA mode: Uses "ap0" WiFi adapter for upstream WiFi

vars/local_vars_unittest.yml

@@ -74,9 +74,10 @@ hostapd_password: changeme    # espec if WiFi firmware patched below?  #2696
 
 # Raspberry Pi 3 B+ and 4 OS's don't allow more than ~4 students to use the
 # internal WiFi hotspot.  Increase this to 19 or 24 student WiFi devices (or
-# 32 on older OS's from 2020) using EXACTLY 1 of the 4 lines below:
+# 32 on older OS's from 2020) using EXACTLY 1 of the 5 lines below:
 #
 #rpi3bplus_rpi4_wifi_firmware: os    # Use your OS's WiFi firmware e.g. 7.45.241
+#rpi3bplus_rpi4_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.234
 rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 #rpi3bplus_rpi4_wifi_firmware: 24    # REQUIRES "wifi_up_down: False" BELOW!
 #rpi3bplus_rpi4_wifi_firmware: 32    # UNRELIABLE (INTERMITTENT) with 2021+ OS's
@@ -86,7 +87,8 @@ rpi3bplus_rpi4_wifi_firmware: 19     # SEE: github.com/iiab/iiab/issues/2853
 # Raspberry Pi Zero W and 3 OS's don't allow more than ~10 students to use the
 # internal WiFi hotspot.  Or try increasing this to 30 student WiFi devices:
 #
-rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98.118
+rpizerow_rpi3_wifi_firmware: os     # Use yr OS WiFi firmware e.g. 7.45.98
+#rpizerow_rpi3_wifi_firmware: ub    # Ubuntu-only OLD firmware e.g. 7.45.98.118
 #rpizerow_rpi3_wifi_firmware: 30    # Or firmware 7.45.98.65 from 2018-09-28
 
 wifi_up_down: True    # AP+STA mode: Uses "ap0" WiFi adapter for upstream WiFi