Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

Possible Duplicate:
12.10 x64 - RTL8188CE - Intermittent/Slow Internet Connection

I recently bought a new system76 laptop which came pre-installed with Ubuntu 11.10. I've been having trouble with my wireless connectivity. It seems that my connection with my wireless network keeps going in and out. It is not my network--I have seen the same problem on multiple WiFi networks and at different distances and reported link qualities.

OS version: Ubuntu 11.10 oneiric
kernel version: 3.0.0-14-generic

lspci:

lspci -nnk | grep -iA2 net

04:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)
Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:9196]
Kernel driver in use: rtl8192ce
--
05:00.0 Ethernet controller [0200]: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller [197b:0250] (rev 05)
Subsystem: CLEVO/KAPOK Computer Device [1558:2500]
Kernel driver in use: jme

iwconfig:

iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"peppermintpatty"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 98:FC:11:6C:E0:22   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
      Link Quality=49/70  Signal level=-61 dBm  
      Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
      Tx excessive retries:0  Invalid misc:1103   Missed beacon:0

lshw:

sudo lshw -class network
  *-network               
       description: Wireless interface
       product: RTL8188CE 802.11b/g/n WiFi Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlan0
       version: 01
       serial: 00:1c:7b:a1:95:04
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192ce driverversion=3.0.0-14-generic firmware=N/A ip=192.168.1.106 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
       resources: irq:18 ioport:e000(size=256) memory:f7d00000-f7d03fff
  *-network
       description: Ethernet interface
       product: JMC250 PCI Express Gigabit Ethernet Controller
       vendor: JMicron Technology Corp.
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: 05
       serial: 00:90:f5:c0:42:b3
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm pciexpress msix msi bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=jme driverversion=1.0.8 duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:56 memory:f7c20000-f7c23fff ioport:d100(size=128) ioport:d000(size=256) memory:f7c10000-f7c1ffff memory:f7c00000-f7c0ffff

Any help would be appreciated. The last time I've dealt with wireless issues, the most given solution was NDIS wrapper and I seem sorely out-of-date.

share|improve this question
    
See askubuntu.com/questions/95360/… for a similar description of the problem - this time the laptop is a Lenovo x121e. And askubuntu.com/questions/97308/…, an Asus PCE-N15. It's always the RTL8188CE. –  Thomas Jan 21 '12 at 13:15
    
TRL8188CE support seems to be much better now with 12.04. –  Thomas Apr 27 '12 at 6:07
add comment

marked as duplicate by gertvdijk, Eliah Kagan, Uri Herrera, hhlp, qbi Jan 16 '13 at 16:05

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

2 Answers

Looks very much like this bug, flaky on Oneiric and almost never working on Precise.

share|improve this answer
add comment

I have been having similar issues lately with a toshiba c655d-s5300. I reverted to an older kernel at the grub menu, and now it is working. Here's what IS working:

   description: Wireless interface
   product: RTL8188CE 802.11b/g/n WiFi Adapter
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:02:00.0
   logical name: wlan0
   version: 01
   serial: e0:ca:94:5c:21:7a
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=rtl8192ce driverversion=3.0.0-13-generic firmware=N/A ip=192.168.1.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11b

It WAS NOT working on the 3.0.0.14-generic kernel.

share|improve this answer
add comment

protected by Community Jan 21 '12 at 16:30

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.