@gt This probably happened with an update on Dec. 28th (it says "Ubuntu touch Version 3" in System Settings -> Updates) for me. OTA-7 didn't fix the issue, but it also didn't cause it.

@flohack Yes, please ;)

@flohack Ah, sorry, the usual confusion about 2- and 3-letter acronyms (I probably see to many references to "UX" etc. at work ;-) ).

Also I'm not on any messenger. I vastly prefer having all my conversations in one central place, and for historical (and work-related) reasons that's email.

@flohack Mine self-identifies as "bacon", FWIW.

There's only 4 occurrences of that file on the whole filesystem, and all of them are symlinks to /persist:

root@ubuntu-phablet:~# find / -name WCNSS_qcom_cfg.ini 2>/dev/null | xargs ls -l
lrw-r--r--. 1 root root 27 Dec 31 22:51 /android/system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini -> /persist/WCNSS_qcom_cfg.ini
lrw-r--r--. 1 root root 27 Dec 31 22:51 /android/system/etc/wifi/WCNSS_qcom_cfg.ini -> /persist/WCNSS_qcom_cfg.ini
lrw-r--r--. 1 root root 27 Dec 31 22:51 /var/lib/lxc/android/rootfs/system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini -> /persist/WCNSS_qcom_cfg.ini
lrw-r--r--. 1 root root 27 Dec 31 22:51 /var/lib/lxc/android/rootfs/system/etc/wifi/WCNSS_qcom_cfg.ini -> /persist/WCNSS_qcom_cfg.ini

Anyway, I've now grabbed a random instance (first Google hit) of that file from github, dropped it in /persist and now have WLAN again. Only problem now is that it won't remember WPA2 passphrases over reboots, but I can live with that.

Thanks for the help, @Flohack !

@flohack I have no idea what you mean with "UT", but I'm a veteran *n?x sysadmin, and in Vienna/AT. If I can help with stuff, I will.

@flohack /persist is mounted (well, it's a symlinl to /android/persist, which is mounted):

phablet@ubuntu-phablet:~$ mount | grep persist
/dev/mmcblk0p15 on /android/persist type ext4 (rw,nosuid,nodev,relatime,nomblk_io_submit,nodelalloc,errors=panic,data=ordered)
/dev/mmcblk0p15 on /var/lib/lxc/android/rootfs/persist type ext4 (rw,nosuid,nodev,relatime,nomblk_io_submit,nodelalloc,errors=panic,data=ordered)
phablet@ubuntu-phablet:~$ ls -l / | grep persist
lrwxrwxrwx 1 root root 16 Jan 28 1970 persist -> /android/persist

Also, there's various stuff in /persist:

phablet@ubuntu-phablet:~$ sudo ls -la /persist/
total 52
drwxrwx--x. 8 system system 4096 May 8 1970 .
drwxrwxrwt 9 root root 180 May 2 1970 ..
drwxrwx---. 2 1002 bluetooth 4096 May 8 1970 bluetooth
-rw-------. 1 1002 bluetooth 9 Aug 25 1970 .bt_nv.bin
drwx------. 5 system system 4096 Dec 31 2013 data
drwx------. 2 root root 4096 Jan 1 1970 lost+found
drwxrwx---. 2 system system 4096 May 8 1970 properties
drwxrwxr-x. 2 system root 4096 May 8 1970 sensors
-rwx------. 1 root root 15360 May 31 2016 sns.reg
drwxr-xr-x. 6 root root 4096 May 27 2015 usf

Just not that "magic" WCNSS_qcom_cfg.ini.

@lakotaubp That didn't fix the issue (reset, no change, rebooted, still no change).

Hi there,

since the last OTA-6 update I have no more WLAN on my OPO. The switch to turn it off/on in Settings->Wifi isn't there, either.

Looking at dmesg/syslog, I see lots of
[ 616.320112] wlan: loading driver v3.8.20.24
[ 616.341167] wlan: [903:F :HDD] hdd_parse_config_ini: request_firmware failed -2
[ 616.353362] wlan: [903:F :HDD] hdd_wlan_startup: error parsing wlan/prima/WCNSS_qcom_cfg.ini
[ 616.353518] wlan: [903:F :HDD] hdd_driver_init: WLAN Driver Initialization failed
[ 616.368188] wlan: driver load failure

For testing, I forced the update to OTA-7, but the problem still persists.

Looking around the FS, the parsing error gets clear:

root@ubuntu-phablet:~# find / -name WCNSS_qcom_cfg.ini 2>/dev/null
/android/system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini
/android/system/etc/wifi/WCNSS_qcom_cfg.ini
/var/lib/lxc/android/rootfs/system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini
/var/lib/lxc/android/rootfs/system/etc/wifi/WCNSS_qcom_cfg.ini
root@ubuntu-phablet:~# ls -l /android/system/etc/firmware/wlan/prima/WCNSS_qcom_ cfg.ini
lrw-r--r--. 1 root root 27 Dec 31 22:51 /android/system/etc/firmware/wlan/prima/WCNSS_qcom_cfg.ini -> /persist/WCNSS_qcom_cfg.ini
root@ubuntu-phablet:~# ls -l /persist/WCNSS_qcom_cfg.ini
ls: cannot access '/persist/WCNSS_qcom_cfg.ini': No such file or directory

Any hints?

cheers+thanks in advance,
rbarclay