Fedora 15 / WLAN [Internet] is very slow

[fedoraaa]

Hi @all,

i've got the following problem. My internet is very very slow and I don't know where to configure it, so that it will run normally...

[emrah@emrah-rechner ~]$ uname -a
Linux math-rechner 2.6.38.6-27.fc15.x86_64 #1 SMP Sun May 15 17:23:28 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[emrah@emrah-rechner ~]$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.0.1

[emrah@emrah-rechner ~]$ lspci | grep Atheros
05:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)

[math@math-rechner ~]$ lsmod | grep ath
ath9k 91484 0
mac80211 234498 1 ath9k
ath9k_common 2633 1 ath9k
ath9k_hw 272393 2 ath9k,ath9k_common
ath 14564 2 ath9k,ath9k_hw
cfg80211 135850 3 ath9k,mac80211,ath

[emrah@emrah-rechner ~]$ dmesg | grep ath
[ 13.634335] ath9k 0000:05:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 13.634348] ath9k 0000:05:00.0: setting latency timer to 64
[ 14.070316] ath: EEPROM regdomain: 0x65
[ 14.070318] ath: EEPROM indicates we should expect a direct regpair map
[ 14.070322] ath: Country alpha2 being used: 00
[ 14.070323] ath: Regpair used: 0x65
[ 14.086829] ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
[ 14.087257] Registered led device: ath9k-phy0::radio
[ 14.087326] Registered led device: ath9k-phy0::assoc
[ 14.087389] Registered led device: ath9k-phy0::tx
[ 14.087456] Registered led device: ath9k-phy0::rx

[emrah@emrah-rechner ~]$ iwconfig
lo no wireless extensions.

p7p1 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"WLANKAS"
Mode:Managed Frequency:2.437 GHz Access Point: 30:46:9A:31:E7:8C
Bit Rate=150 Mb/s Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=66/70 Signal level=-44 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4 Invalid misc:149 Missed beacon:0

When I try to load a website, e.g. to post a new thread in this forum, I can't. I also disabled IPv6 in Firefox but this didn't help either. I have no problems in Windows 7 and I had to open this thread in Win 7 as it was not possible to do it in Fedora..

Any ideas how I can run my internet normally? Thank you.

[lkpfedora]

Using DNS google public instead of your DNS.
nameserver 8.8.8.8

[fedoraaa]

Hi,

that doesn't help either. :-/

[gnaurphe]

You can try a workaround:
# rmmod ath9k
# modprobe ath9k nohwcrypt=1

[fedoraaa]

Originally Posted by gnaurphe

You can try a workaround:
# rmmod ath9k
# modprobe ath9k nohwcrypt=1

Hi,

this helped for about 30 minutes, 1 hour or 2? I don't know exactly how long it worked well but now it is the same as before. My internet is still so slow..

I already tried

sudo su
echo "options ath9k nohwcrypt=1" >> /etc/modprobe.d/ath9k.conf
reboot

but this didn't help either... Any further ideas?

[gnaurphe]

Quite odd... it worked for me and continues to work. I didn't add it to any startup scripts, though... just been typing it after reboots.

I wish I could find the original thread where I snatched that info, but it seems to be hiding for the moment. The basic summary is that this is a regression with the ath9k driver in th .38 kernel series and should be fixed soon with a kernel update (affects only the *.38 series if memory serves... someone leap in and tell me if I'm wrong.)

I wish I had better ideas than "try again" or "wait for the kernel update" but I'm honestly not that intelligent and I know when to shut up.

Eric

[fedoraaa]

Thank you for your help, gnaurphe!

A question to you: can you load this website or a link on that website perfectly? https://www.bwin.com/de/default.aspx
Because I can't...

I'm afraid I have to wait for a kernel update...

---------- Post added at 09:40 PM ---------- Previous post was at 09:31 PM ----------

I guess I have a workaround. This works, at least for me, like a dream:

sudo nano /etc/rc.local

Add this to the end of the line:

iwconfig wlan0 rate 54M
exit 0

Update the firmware of the router and set it to B/G mode only.

Now I can surf normally.

[gnaurphe]

I don't read the language well enough to be certain, but it appears to open with no problems.

[fedoraaa]

Hi gnaurphe,

with the workaround above it works quite well now.
Thank you again for your help!

[angelcosta]

Yeah, worked for me too. Torrent speed just went high now!

Thanks.

[fedoraaa]

Originally Posted by angelcosta

Yeah, worked for me too. Torrent speed just went high now!

Thanks.

Nice to read that.

[knightvv]

I had the same problem. My environment:
Fedora 15, 64 bit
Thinkpad x120e, E-240
Realtek wireless card

I've tried several different solutions online, including
- changing DNS server and
- setting transmission power of wireless card to 45Mbps (it already says so)
- and caching DNS result.

None of those really solved my problem.

Finally I solved it by updating to kernel 2.6.40. It really worked.

Now by using iwconfig I can see the the transmission power of wireless card is increased from 45Mbps to 150Mbps. This seems to be the difference I noticed so far.

So my suggestion is try updating your kernel since it seems to be a kernel bug.

[Maxorata]

Hi,
What packages did you install? I have kernel 2.6.40 installed and I'm still experiencing very slow transfer rates.
My netbook is a Lenovo IdeaPad S205. Except for the wireless being slow everything else works wonderfully.
Thanks for your help.