wifi RTL8188CE-adapter unstable

[Pfiff]

Hello,

since a couple of days I can't use my wifi. Before it has been working perfect. I believe it's a problem since the last upgrades ...

My system: lenovo t520

RTL8188CE wifi-adapter

Maui 2.1 Blue Tang
@@Build_version@@

To demonstrate the problem:

Code:

ping 192.168.178.1
PING 192.168.178.1 (192.168.178.1) 56(84) bytes of data.
64 bytes from 192.168.178.1: icmp_seq=1 ttl=64 time=1.09 ms
64 bytes from 192.168.178.1: icmp_seq=2 ttl=64 time=2.87 ms
64 bytes from 192.168.178.1: icmp_seq=3 ttl=64 time=3.06 ms
64 bytes from 192.168.178.1: icmp_seq=4 ttl=64 time=3.06 ms
64 bytes from 192.168.178.1: icmp_seq=5 ttl=64 time=3.70 ms
64 bytes from 192.168.178.1: icmp_seq=6 ttl=64 time=1.29 ms
64 bytes from 192.168.178.1: icmp_seq=7 ttl=64 time=1.21 ms
64 bytes from 192.168.178.1: icmp_seq=8 ttl=64 time=1.23 ms
64 bytes from 192.168.178.1: icmp_seq=9 ttl=64 time=1.05 ms
64 bytes from 192.168.178.1: icmp_seq=10 ttl=64 time=1.23 ms
64 bytes from 192.168.178.1: icmp_seq=39 ttl=64 time=2.58 ms
64 bytes from 192.168.178.1: icmp_seq=40 ttl=64 time=2.29 ms
64 bytes from 192.168.178.1: icmp_seq=41 ttl=64 time=1.17 ms
64 bytes from 192.168.178.1: icmp_seq=42 ttl=64 time=1.31 ms
64 bytes from 192.168.178.1: icmp_seq=43 ttl=64 time=1.19 ms
64 bytes from 192.168.178.1: icmp_seq=44 ttl=64 time=1.25 ms
64 bytes from 192.168.178.1: icmp_seq=45 ttl=64 time=1.50 ms
64 bytes from 192.168.178.1: icmp_seq=46 ttl=64 time=1.36 ms
64 bytes from 192.168.178.1: icmp_seq=47 ttl=64 time=1.52 ms
64 bytes from 192.168.178.1: icmp_seq=48 ttl=64 time=2.34 ms
64 bytes from 192.168.178.1: icmp_seq=49 ttl=64 time=1.16 ms
^C
--- 192.168.178.1 ping statistics ---
49 packets transmitted, 21 received, 57% packet loss, time 48246ms
rtt min/avg/max/mdev = 1.059/1.789/3.702/0.800 ms

!!!!

and 

Code:

lspci -nnk | grep -i net -A2
00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)
       Subsystem: Lenovo 82579LM Gigabit Network Connection [17aa:21ce]
       Kernel driver in use: e1000e
       Kernel modules: e1000e
--
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)
       Subsystem: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8195]
       Kernel driver in use: rtl8192ce

Without wifi my notebook is so useless!!!


Thanks in advance!

Dieter

[leszek]

This chip seems to be problematic.
See this maybe it helps: https://ubuntuforums.org/showthread.php?t=2311974
Otherwise long term solution get a proper wifi chip that is well supported like ath5k or ath9k supported chips.

[Pfiff]

Thanks Leszek,

again, it seems you found the solution!

Am I right that with every kernel-update I have to do this procedure?

Ciao!
Dieter

[leszek]

Yes a rebuild is necessary against the new kernel.