I’m using Replicant on my main phone. As I’ve written before, I didn’t get Wifi to work. The other day leth in #replicant pointed me towards a CyanogenMod discussion about a similar issue. The fix does indeed work, and allowed me to connect to wifi networks and to setup my phone for Internet sharing. You need to run the following commands after every boot, disable/enable Wifi, and then it should work.
echo murata > /data/.cid.info chown system /data/.cid.info chgrp wifi /data/.cid.info chmod 0660 /data/.cid.info
Digging deeper, I found a CM Jira issue about it, and ultimately a code commit. It seems the issue is that more recent S3’s comes with a Murata Wifi chipset that uses MAC addresses not known back in the Android 4.2 (CM-10.1.3 and Replicant-4.2) days. Pulling in the latest fixes for macloader.cpp solves this problem for me, and there is no need for the workaround above. I still need to load the non-free firmware images that I get from CM-10.1.3. I’ve created a pull request fixing macloader.cpp for Replicant 4.2 if someone else is curious about the details. You have to rebuild your OS with the patch for things to work (if you don’t want to, the workaround using /data/.cid.info works fine), and install some firmware blobs as below.
adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_apsta.bin_b1 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_apsta.bin_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b0 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b1 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_mfg.bin_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b0 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b1 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_p2p.bin_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b0 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b1 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/bcmdhd_sta.bin_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_murata /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_murata_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_mfg.txt_semcosh /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_murata /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_murata_b2 /system/vendor/firmware/ adb push cm-10.1.3-i9300/system/etc/wifi/nvram_net.txt_semcosh /system/vendor/firmware/