Ubuntu
linux package

Very slow Internet connection on natty with wlan

Bug #763974 reported by ubuntic on 2011-04-17

This bug affects 10 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Incomplete	Medium	Seth Forshee

Bug Description

In natty i have very slow internet connection with wlan (I use network-manager), it changes between 20 b/s to 1100b/s. if i boot windows7 with wlan or using wired connection download get full speed, 1.5MiBs.
I installed Natty Beta2 64 on Asus UL30VT. No Problems in Lucid. the day before i deactivated ipv6 but it is still the same.
Can somebody reproduce this? The bug report is attached.

thanks
ubuntic

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: fatih 1530 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfcbf4000 irq 47'
   Mixer name : 'Realtek ALC269'
   Components : 'HDA:10ec0269,104313a3,00100004'
   Controls : 11
   Simple ctrls : 7
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xfe97c000 irq 16'
   Mixer name : 'Nvidia GPU 0b HDMI/DP'
   Components : 'HDA:10de000b,10de0101,00100100'
   Controls : 16
   Simple ctrls : 4
Date: Sun Apr 17 22:48:39 2011
HibernationDevice: RESUME=UUID=9e4d2fea-13c1-4167-9441-010a10b64a7a
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
MachineType: ASUSTeK Computer Inc. UL30VT
ProcEnviron:
LANGUAGE=de_DE:en
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=cc3664ca-8b31-4224-b178-c431ae87bb75 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-8-generic N/A
linux-backports-modules-2.6.38-8-generic N/A
linux-firmware 1.50
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/14/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 211
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UL30VT
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr211:bd07/14/2010:svnASUSTeKComputerInc.:pnUL30VT:pvr1.0:rvnASUSTeKComputerInc.:rnUL30VT:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: UL30VT
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.

Tags:

Revision history for this message

ubuntic (ubuntic) wrote on 2011-04-17:

output from iwconfig and nm-tool Edit (900 bytes, text/plain)
AcpiTables.txt Edit (485.0 KiB, text/plain; charset="utf-8")
AlsaDevices.txt Edit (934 bytes, text/plain; charset="utf-8")
AplayDevices.txt Edit (565 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (57.1 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (1.6 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (9.3 KiB, text/plain; charset="utf-8")
Card1.Amixer.values.txt Edit (499 bytes, text/plain; charset="utf-8")
Card1.Codecs.codec.0.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Card1.Codecs.codec.1.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Card1.Codecs.codec.2.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Card1.Codecs.codec.3.txt Edit (1.2 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (24.1 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.9 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (531 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (13.8 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (670 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcCpuinfo_.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.6 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (112 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (128.7 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (291.0 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (944.3 KiB, text/plain; charset="utf-8")

Revision history for this message

Michael Davenport (mmichael009) wrote on 2011-04-18:

This is a regression in the 2.6.38 kernel. I had to downgrade to 2.6.37-6

You would think when trying to optimize the wifi drivers that they would at least test the drivers and see if they are any better which they could be, but they don't seem like it.

Revision history for this message

ubuntic (ubuntic) wrote on 2011-04-19:

Hi there,
i testet the new Mainline Kernel: http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.39-rc3-natty/linux-image-2.6.39-020639rc3-generic_2.6.39-020639rc3.201104120912_amd64.deb

And what do you think happends? Speed test gives:
Download speed: 15.255 kbit/s (1.907 kByte/s)
Upload: 840 kbit/s (105 kByte/s)

This is a correct speed i think.
But i wonder why the download speed goes down in 2.6.38 Kernel and not the upload speed?

Thanks
ubuntic

Revision history for this message

ubuntic (ubuntic) wrote on 2011-04-26:

With the new 2.6.39 and the old 2.6.37 Kernel there are no slow internet connection problems.

thanks
ubuntic

Revision history for this message

cimh (martin-briscoe) wrote on 2011-05-02:

I think this bug affects my natty install on asus eee 901 with a rt2680 wifi chip. Since installing 2 days ago I have had major problems with slow web pages - in both ff and chrome. I have fully installed twice with the same problem and its also the same with Lubuntu on a fresh install.

peppermint (based on 10.10) in a different partition works fine (I think that kernel is 2.6.35).

Upgrading Lubuntu to 2.6.39 seems to have solved the problem (only running for 10 minutes on this but web pages are fast again). If this is the case then asus eees 901s &1000s will not function properly if they install 11.04 as the connection is so bad (a single page may take 2 minutes to load)

cimh
eee 901
lubuntu 11.04
peppermint ice

Revision history for this message

Seth Forshee (sforshee) wrote on 2011-06-06:

There have been quite a few atheros bug fixes in the .38 stable kernels, so it would be good to check the most recent stable kernel to see if the bug is already fixed there. This is available at:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38.8-natty/

Please post your results here. Thanks!

Changed in ubuntu:
status:	New → Triaged
assignee:	nobody → Seth Forshee (sforshee)
importance:	Undecided → Medium
status:	Triaged → Incomplete
affects:	ubuntu → linux (Ubuntu)

Revision history for this message

Barry Rueger (barry-rueger) wrote on 2011-06-06:

For what it's worth, the ath9k fix suggested here:
http://www.ubuntusecrets.it/2011/04/hack-connessione-lenta-su-natty-forse-ho-la-soluzione-giusta-per-voi/?lang=en

solved my problem. I'll check out the natty upgrade though.

Barry

sudo -s

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

reboot

Revision history for this message

Subramanian S (raiden612) wrote on 2013-06-06:

Hi, I am not so aware of these linux commands.
I find the ubuntusecrets link to be unavailable.
I face this issue ever since I upgraded to natty (11.04) from maverick (10.10). I still continue to face it in precise (12.04).
I am using a DELL Inspiron 1525. Wireless module - Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

If there is a workaround to make Wi-Fi to work please let me know.
I prefer not to re-install Ubuntu.

Thank you.

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Very slow Internet connection on natty with wlan

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