Wireless problem Precise Pangolin
Hello everyone. I'm here to fix my rtl8192se wireless driver. I have asked this a week before here, while installing Ubuntu. I could use wireless till this morning. After some reboot and lots of research, I couldn't find an answer to my problem. Network Manager can't establish a connection, and it asks for authentication periodically (approx. a minute). I have sent an email to Realtek, and I'm pasting it here, so, it may be fixed if it's nothing to do with the Realtek side but the Ubuntu side.
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Hello. Whenever I use ubuntu on my PC, I have problems with my wireless internet. This is some terminal output about my system(which is a Compaq Presario CQ62):
# lspci -nn | grep Wireless
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8191SEvA Wireless LAN Controller [10ec:8171] (rev 10)
#sudo lshw -C network
*-network
description: Wireless interface
product: RTL8191SEvA Wireless LAN Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 10
serial: 70:f1:a1:c6:95:2e
width: 32 bits
clock: 33MHz
resources: irq:16 ioport:
->I have cut off the eth0 results since I have no problem with ethernet.
#sudo iwlist scanning
wlan0 Scan completed :
Cell 01 - Address: 00:E0:4D:CD:76:87
#cat /etc/network/
auto lo
iface lo inet loopback
#sudo lshw -short | grep network
/0/100/1c/0 wlan0 network RTL8191SEvA Wireless LAN Controller
/0/100/1c.1/0 eth0 network RTL8101E/RTL8102E PCI Express Fast Ethernet controller
#uname -a
Linux cp-cq62 3.2.0-24-
#iwconfig
wlan0 IEEE 802.11bgn ESSID:"
Retry long limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
#sudo hwinfo --netcard
27: PCI 200.0: 0282 WLAN controller
[Created at pci.318]
Unique ID: y9sn.LijBSGb8FsA
Parent ID: z8Q3.Cj2ByQjL_A7
SysFS ID: /devices/
SysFS BusID: 0000:02:00.0
Hardware Class: network
Model: "Realtek WLAN controller"
Vendor: pci 0x10ec "Realtek Semiconductor Co., Ltd."
Device: pci 0x8171
SubVendor: pci 0x103c "Hewlett-Packard Company"
SubDevice: pci 0x1467
Revision: 0x10
Driver: "rtl8192se"
Driver Modules: "rtl8192se"
Device File: wlan0
Features: WLAN
I/O Ports: 0x3000-0x3fff (rw)
Memory Range: 0x93500000-
IRQ: 16 (53625 events)
HW Address: 70:f1:a1:c6:95:2e
Link detected: no
WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13
WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 2.467 2.472
WLAN encryption modes: WEP40 WEP104 TKIP CCMP
WLAN authentication modes: open sharedkey wpa-psk wpa-eap
Module Alias: "pci:v000010ECd
Driver Info #0:
Driver Status: rtl8192se is active
Driver Activation Cmd: "modprobe rtl8192se"
Config Status: cfg=new, avail=yes, need=no, active=unknown
Attached to: #15 (PCI bridge)
#sudo lsmod
Module Size Used by
snd_hrtimer 12648 1
ip6table_filter 12711 0
ip6_tables 22528 1 ip6table_filter
ebtable_nat 12695 0
ebtables 21508 1 ebtable_nat
ipt_MASQUERADE 12663 3
iptable_nat 13016 1
nf_nat 24959 2 ipt_MASQUERADE,
nf_conntrack_ipv4 19084 4 iptable_nat,nf_nat
nf_defrag_ipv4 12649 1 nf_conntrack_ipv4
xt_state 12514 1
nf_conntrack 73847 5 ipt_MASQUERADE,
ipt_REJECT 12512 2
xt_CHECKSUM 12493 1
iptable_mangle 12646 1
xt_tcpudp 12531 5
iptable_filter 12706 1
ip_tables 18106 3 iptable_
x_tables 21974 12 ip6table_
bridge 79769 0
stp 12811 1 bridge
joydev 17393 0
snd_hda_codec_hdmi 31775 1
snd_hda_
arc4 12473 2
hp_wmi 13652 0
sparse_keymap 13658 1 hp_wmi
rfcomm 38139 0
bnep 17830 2
parport_pc 32114 0
bluetooth 158438 10 rfcomm,bnep
snd_hda_intel 32765 3
snd_hda_codec 109562 3 snd_hda_
ppdev 12849 0
snd_hwdep 13276 1 snd_hda_codec
snd_pcm 80845 3 snd_hda_
snd_seq_midi 13132 0
snd_rawmidi 25424 1 snd_seq_midi
psmouse 72919 0
serio_raw 13027 0
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 3 snd_seq_
wmi 18744 1 hp_wmi
i915 414672 4
rtl8192se 94189 0
rtlwifi 95804 1 rtl8192se
snd_timer 28931 3 snd_hrtimer,
mac_hid 13077 0
mac80211 436455 2 rtl8192se,rtlwifi
snd_seq_device 14172 3 snd_seq_
cfg80211 178679 2 rtlwifi,mac80211
snd 62064 17 snd_hda_
drm_kms_helper 45466 1 i915
soundcore 14635 1 snd
snd_page_alloc 14108 2 snd_hda_
drm 197692 5 i915,drm_kms_helper
i2c_algo_bit 13199 1 i915
video 19068 1 i915
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
r8169 56321 0
This has became a big problem for Ubuntu user as there are hundreds of forum posts and askubuntu etc. entries about this bug.
When I switch to Windows 7 (using a dual boot machine), I have no problem with internet. So this is possibly a driver bug or a bug about Ubuntu's networkmanager software. I will post a copy of this e-mail to them. As one of many people who uses Ubuntu and realtek hardware together, I (or we) need a fix for this bug which has affect on particularly Ubuntu Linux OS.
I want to note that I have used Fedora Core 16 for a week, and didn't have wireless problems. The kernel was version 3.4~ on that OS.
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The above text is the full copy of the body of my email which sent to Realtek. I have replaced the subject line with the above description of my problem. This email is based on this: https:/
I have trimmed some unnecessary info, that Realtek wouldn't need to know (in my opinion). I wont consider re-formatting as an answer since we can't format our PC for every bug, and because I have connectivity problems every single time I install Ubuntu (precise pangolin and oneiric ocelot) as many other who has Realtek network hardware.
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- Göktuğ Kayaalp
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