148f:3072 Performance of rt2800usb module in 3.5.0 abysmal (used by RT3072 chipset)

[Ivo Wever]

After switching from linux-image-3.2.0-37 to linux-image-3.5.0-23, I noted the performance of my wireless network became awful (~1/10th of my regular ~3 Mbps). Several reboots and crosschecks with other devices confirmed that the kernel is to blame.

My wireless device:
Bus 002 Device 003: ID 148f:3072 Ralink Technology, Corp. RT3072 Wireless Adapter

The driver stack used under both kernels:
rt2800usb 22773 0
rt2800lib 58967 1 rt2800usb
crc_ccitt 12707 1 rt2800lib
rt2x00usb 20808 1 rt2800usb
rt2x00lib 55326 3 rt2800usb,rt2800lib,rt2x00usb
mac80211 506862 3 rt2800lib,rt2x00usb,rt2x00lib
cfg80211 205774 2 rt2x00lib,mac80211

Of course I googled and came across topics such as http://askubuntu.com/questions/131768/dlink-wireless-dwa-140-speeds-are-crippled-on-12-04, where it is adviced to switch to the (older?) rt5370sta. I tried that and although the driver installs, loads and even connects to my accesspoint just fine, it subsequently immediately freezes the 3.5 kernel.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-23-generic 3.5.0-23.35~precise1
ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
Uname: Linux 3.2.0-37-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ivo 2644 F.... pulseaudio
CRDA:
 country NL:
  (2402 - 2482 @ 40), (N/A, 20)
  (5170 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
  (5250 - 5330 @ 40), (N/A, 20), NO-OUTDOOR, DFS
  (5490 - 5710 @ 40), (N/A, 27), DFS
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 44'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,12970000,00100001'
   Controls : 43
   Simple ctrls : 20
Date: Fri Feb 15 21:51:50 2013
HibernationDevice: RESUME=UUID=e807172d-7e53-45ef-9a06-40c7ea6eccf2
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Shuttle Inc SP35
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-37-generic root=UUID=8148180a-7b5f-40f2-b582-36dfca309143 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-37-generic N/A
 linux-backports-modules-3.2.0-37-generic N/A
 linux-firmware 1.79.1
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-04-28 (293 days ago)
WifiSyslog: Feb 15 19:49:42 twen kernel: [ 3790.494037] cfg80211: Found new beacon on frequency: 2472 MHz (Ch 13) on phy0
dmi.bios.date: 07/03/2009
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: FP35
dmi.board.vendor: Shuttle Inc
dmi.board.version: V20
dmi.chassis.type: 3
dmi.chassis.vendor: Shuttle Inc
dmi.chassis.version: G5
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd07/03/2009:svnShuttleInc:pnSP35:pvrV20:rvnShuttleInc:rnFP35:rvrV20:cvnShuttleInc:ct3:cvrG5:
dmi.product.name: SP35
dmi.product.version: V20
dmi.sys.vendor: Shuttle Inc

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.8 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/

[Ivo Wever (ivo-wever)]

Unfortunately mainline 3.8.0 will not boot: it leaves me with a frozen GUI login screen, on which no input, not even SysRq, is accepted.

[Ivo Wever (ivo-wever)]

Today I tested with the 3.8.0-19 kernel installed from the package in the precise repository. Network performance is fine again. Marked as 'kernel-fixed-upstream'

[David Agudo (dagudoj)]

Still hapens with Linux desktop 3.5.0-37-generic #58~precise1-Ubuntu SMP Wed Jul 10 17:48:11 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

[penalvch (penalvch)]

Ivo Wever, could you please confirm this issue exists with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]