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Message #03377
[Bug 1132381] Re: rtl8192cu drivers very low dl-speed
Panmari, 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>
Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc3
This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
As well, please remove the tag:
needs-upstream-testing
If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** Description changed:
With the kernel drivers, my device based on the rtl8192cu chipset shows
very poor performance (~50 kb/s downlink).
- Only when installing the drivers supplied by realtek (
- http://www.realtek.com/downloads/downloadsView.aspx?Langid=2&PNid=21&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downloads=true
- ) , I get full performance. According to this page, this driver is
- merged into the main kernel since 3.0.2.
-
The debug information attached is with the drivers mentioned above
installed.
+
+ WORKAROUND: Install drivers via realtek:
+ http://www.realtek.com/downloads/downloadsView.aspx?Langid=2&PNid=21&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downloads=true
+
+ According to this page, this driver is merged into the main kernel since
+ 3.0.2.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-25-generic 3.5.0-25.38~precise1
ProcVersionSignature: Ubuntu 3.5.0-25.38~precise1-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
ArecordDevices:
- **** List of CAPTURE Hardware Devices ****
- card 0: Intel [HDA Intel], device 0: VT1828S Analog [VT1828S Analog]
- Subdevices: 2/2
- Subdevice #0: subdevice #0
- Subdevice #1: subdevice #1
+ **** List of CAPTURE Hardware Devices ****
+ card 0: Intel [HDA Intel], device 0: VT1828S Analog [VT1828S Analog]
+ Subdevices: 2/2
+ Subdevice #0: subdevice #0
+ Subdevice #1: subdevice #1
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC1: mazzzy 1819 F.... pulseaudio
- /dev/snd/controlC0: mazzzy 1819 F.... pulseaudio
- /dev/snd/pcmC0D0p: mazzzy 1819 F...m pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC1: mazzzy 1819 F.... pulseaudio
+ /dev/snd/controlC0: mazzzy 1819 F.... pulseaudio
+ /dev/snd/pcmC0D0p: mazzzy 1819 F...m pulseaudio
Card0.Amixer.info:
- Card hw:0 'Intel'/'HDA Intel at 0xf3ff8000 irq 51'
- Mixer name : 'VIA VT1828S'
- Components : 'HDA:11064441,104383d0,00100100'
- Controls : 52
- Simple ctrls : 24
+ Card hw:0 'Intel'/'HDA Intel at 0xf3ff8000 irq 51'
+ Mixer name : 'VIA VT1828S'
+ Components : 'HDA:11064441,104383d0,00100100'
+ Controls : 52
+ Simple ctrls : 24
Card1.Amixer.info:
- Card hw:1 'NVidia'/'HDA NVidia at 0xf7afc000 irq 17'
- Mixer name : 'Nvidia GPU 12 HDMI/DP'
- Components : 'HDA:10de0012,10de0101,00100100'
- Controls : 24
- Simple ctrls : 4
+ Card hw:1 'NVidia'/'HDA NVidia at 0xf7afc000 irq 17'
+ Mixer name : 'Nvidia GPU 12 HDMI/DP'
+ Components : 'HDA:10de0012,10de0101,00100100'
+ Controls : 24
+ Simple ctrls : 4
Date: Sun Feb 24 10:08:06 2013
HibernationDevice: RESUME=UUID=5d3f78d2-bc2f-4c30-806b-f63d453e1000
MachineType: System manufacturer System Product Name
MarkForUpload: True
ProcEnviron:
- LANGUAGE=en_US:en
- TERM=xterm
- PATH=(custom, no user)
- LANG=en_US.UTF-8
- SHELL=/bin/bash
+ LANGUAGE=en_US:en
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
ProcFB:
-
+
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-25-generic root=/dev/sdb6 ro quiet splash
RelatedPackageVersions:
- linux-restricted-modules-3.5.0-25-generic N/A
- linux-backports-modules-3.5.0-25-generic N/A
- linux-firmware 1.79.1
+ linux-restricted-modules-3.5.0-25-generic N/A
+ linux-backports-modules-3.5.0-25-generic N/A
+ linux-firmware 1.79.1
RfKill:
-
+
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/14/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1504
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P7P55D-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1504:bd12/14/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7P55D-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
** Tags added: needs-upstream-testing regression-potential
** Summary changed:
- rtl8192cu drivers very low dl-speed
+ 0586:341f rtl8192cu drivers very low dl-speed
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1132381
Title:
0586:341f rtl8192cu drivers very low dl-speed
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
With the kernel drivers, my device based on the rtl8192cu chipset
shows very poor performance (~50 kb/s downlink).
The debug information attached is with the drivers mentioned above
installed.
WORKAROUND: Install drivers via realtek:
http://www.realtek.com/downloads/downloadsView.aspx?Langid=2&PNid=21&PFid=48&Level=5&Conn=4&ProdID=277&DownTypeID=3&GetDown=false&Downloads=true
According to this page, this driver is merged into the main kernel
since 3.0.2.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-25-generic 3.5.0-25.38~precise1
ProcVersionSignature: Ubuntu 3.5.0-25.38~precise1-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: VT1828S Analog [VT1828S Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mazzzy 1819 F.... pulseaudio
/dev/snd/controlC0: mazzzy 1819 F.... pulseaudio
/dev/snd/pcmC0D0p: mazzzy 1819 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf3ff8000 irq 51'
Mixer name : 'VIA VT1828S'
Components : 'HDA:11064441,104383d0,00100100'
Controls : 52
Simple ctrls : 24
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xf7afc000 irq 17'
Mixer name : 'Nvidia GPU 12 HDMI/DP'
Components : 'HDA:10de0012,10de0101,00100100'
Controls : 24
Simple ctrls : 4
Date: Sun Feb 24 10:08:06 2013
HibernationDevice: RESUME=UUID=5d3f78d2-bc2f-4c30-806b-f63d453e1000
MachineType: System manufacturer System Product Name
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-25-generic root=/dev/sdb6 ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-3.5.0-25-generic N/A
linux-backports-modules-3.5.0-25-generic N/A
linux-firmware 1.79.1
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/14/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1504
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P7P55D-E
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1504:bd12/14/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7P55D-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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