Something similar happened when I installed 12.1 on another HDD, but this time, I’m having a little more difficulty after upgrading from 11.4: I have lost all of my wireless connections and settings. I know that my network card works because I’m using it now to communicate this from 12.2. I have gathered as much information as I can, for example:
/usr/sbin/iwlist scan
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wlan0 Interface doesn't support scanning : Network is down
I have tried /etc/init.d/network restart and systemctl restart network.service, but to no avail; there is no output, but a return carriage. Then I get the same result as above. Here is more information:
randolph@linux-ppnb:~> /sbin/lspci
...
02:00.0 Network controller: Ralink corp. RT2860
03:00.0 USB Controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
I looked at the hardware profile in 12.1. The drivers are there for this card. I looked at network settings; they’re the same as in 12.2. I tried dmesg | less in 12.1; I have no idea what to look for among those 3000+ lines. PCIe? 2860? Anything missing? My head is swimming. Then I tried this:
linux-ppnb:~ # /usr/sbin/iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
So, I’m thinking maybe there is something very simple that I’m missing when I try this:
linux-ppnb:~ # sudo /usr/sbin/iwlist scan
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wlan0 Interface doesn't support scanning : Network is down
I someone please point me in the right direction because I’m feeling like a very tired old man at this point. Thanks in advance.
P.S.
What’s that network connection widget called that I’m using that has “interfaces” on the left and “connections” on the right? I’ve been trying to call it up in 12.1, but I forget the name. Luckily, I still have it in 12.2 after the upgrade.