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Cheetah05
December 7th, 2010, 03:59 PM
Hi there,

I have just switch to Ubuntu on my laptop from Windows 7 and I am experiencing alot of wireless dropping.

The signal itself is full and I am very close to the router.

What could be the issue and how do I go about rectifying it.

Laptop: Dell 13z.
Wireless: Intel 5100 agn
Ubuntu 10.10 x64.

Thanks.

MooPi
December 7th, 2010, 04:13 PM
Can you give us the results of these commands from terminal?
lsmod
and
iwconfig

Cheetah05
December 7th, 2010, 06:48 PM
Thanks for the response. Here are the results:

(I am downstairs so the signal may not be as good as good as I claimed in the OP, if you need results where I usually am, just say)



Module Size Used by
cryptd 8140 0
aes_x86_64 7936 1
aes_generic 27631 1 aes_x86_64
parport_pc 30086 0
ppdev 6804 0
snd_hda_codec_intelhdmi 11032 1
snd_hda_codec_realtek 299524 1
binfmt_misc 7984 1
vboxnetadp 5267 0
vboxnetflt 14966 0
rfcomm 40787 0
joydev 11363 0
sco 9986 2
bnep 11985 2
vboxdrv 1792408 2 vboxnetadp,vboxnetflt
l2cap 42304 6 rfcomm,bnep
btusb 12929 0
bluetooth 59245 7 rfcomm,sco,bnep,l2cap,btusb
arc4 1497 2
snd_hda_intel 26019 2
snd_hda_codec 100919 3 snd_hda_codec_intelhdmi,snd_hda_codec_realtek,snd_ hda_intel
snd_hwdep 6660 1 snd_hda_codec
snd_pcm 89104 2 snd_hda_intel,snd_hda_codec
iwlagn 202721 0
i915 332088 3
snd_seq_midi 5932 0
snd_rawmidi 22207 1 snd_seq_midi
snd_seq_midi_event 7291 1 snd_seq_midi
drm_kms_helper 32836 1 i915
snd_seq 57512 2 snd_seq_midi,snd_seq_midi_event
iwlcore 146875 1 iwlagn
snd_timer 23850 2 snd_pcm,snd_seq
snd_seq_device 6912 3 snd_seq_midi,snd_rawmidi,snd_seq
uvcvideo 62379 0
mac80211 266657 2 iwlagn,iwlcore
drm 206161 4 i915,drm_kms_helper
usbhid 42062 0
hid 84678 1 usbhid
dell_wmi 3372 0
snd 64117 13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec, snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,sn d_seq_device
cfg80211 170293 3 iwlagn,iwlcore,mac80211
videodev 49359 1 uvcvideo
v4l1_compat 15519 2 uvcvideo,videodev
v4l2_compat_ioctl32 12486 1 videodev
dell_laptop 6722 0
dcdbas 6910 1 dell_laptop
psmouse 62080 0
serio_raw 4910 0
soundcore 1240 1 snd
snd_page_alloc 8588 2 snd_hda_intel,snd_pcm
intel_agp 32144 2 i915
i2c_algo_bit 6208 1 i915
video 22176 1 i915
lp 10201 0
output 2527 1 video
parport 37032 3 parport_pc,ppdev,lp
usb_storage 50372 0
ahci 21857 0
r8169 42222 0
libahci 26199 3 ahci
mii 5261 1 r8169




lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11abg ESSID:"Router Name"
Mode:Managed Frequency:2.412 GHz Access Point: Router MAC
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=54/70 Signal level=-56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

vboxnet0 no wireless extensions.

Cheetah05
December 11th, 2010, 02:13 PM
Bump!

uncaspi
December 11th, 2010, 03:03 PM
Try to switch the power management of the card off.

sudo iwcoonfig wlan0 power off

Cheetah05
December 11th, 2010, 04:25 PM
Try to switch the power management of the card off.

sudo iwcoonfig wlan0 power off

Will try that and post results. In the mean time, what does the power management do exactly? Just turn the wireless power down when it's not being used? Do you think its turning the power down too much and dropping the signal?