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Message #114521
[Bug 1365844] Re: 0bda:8178 buggy driver rtl8192cu
*** This bug is a duplicate of bug 1409102 ***
https://bugs.launchpad.net/bugs/1409102
** This bug has been marked a duplicate of bug 1409102
WiFi is slower on Ubuntu than Windows.
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https://bugs.launchpad.net/bugs/1365844
Title:
0bda:8178 buggy driver rtl8192cu
Status in linux package in Ubuntu:
Confirmed
Bug description:
Ubuntu 14.04/14.10 driver rtl8192cu for a Realtek USB wireless card is
buggy. I can connect to wifi, but soon the connection is dropped.
WORKAROUND: 1. First check whether the buggy driver rtl8192cu is active in your operating system. Execute at a terminal window:
lsmod | grep rtl
2. Disconnect your wireless connection (unplug the USB adapter that
contains the Realtek chipset), and temporarily connect to the internet
by means of an ethernet cable (or by means of another wireless chipset
that does function well).
3. Now install some applications for building the right driver via a terminal:
sudo apt-get install linux-headers-generic build-essential dkms git
4. Now download the source code of the driver via a terminal:
git clone https://github.com/pvaret/rtl8192cu-fixes.git
5. Set it up as a DKMS module via a terminal:
sudo dkms add ./rtl8192cu-fixes
6. Build and install the new driver via a terminal:
sudo dkms install 8192cu/1.9
7. Refresh the module list via a terminal:
sudo depmod -a
8. Blacklist the faulty driver via a terminal:
sudo cp ./rtl8192cu-fixes/blacklist-native-rtl8192.conf /etc/modprobe.d/
9. Reboot your computer. The problem should now be solved: disconnect the temporary ethernet cable and insert the Realtek device again. With the following terminal command you can check whether the right driver is active now (copy and paste it into the terminal):
lsmod | grep 8192
Note: a possibly surprising side effect might be, that the light on
your wireless card is blinking constantly now. That's normal: the
light is blinking whenever data are being sent or received.
Source: https://github.com/pvaret/rtl8192cu-fixes
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-headers-3.13.0-24 3.13.0-24.47
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bob 1852 F.... pulseaudio
/dev/snd/controlC1: bob 1852 F.... pulseaudio
CurrentDesktop: LXDE
Date: Fri Sep 5 14:02:05 2014
HibernationDevice: RESUME=UUID=6d790ec4-ec3d-43a7-ab1a-c4b574e60673
InstallationDate: Installed on 2014-05-20 (107 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: ASUS All Series
PackageArchitecture: all
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=37f58aeb-6419-4ca6-a667-002bb0791572 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-35-generic N/A
linux-backports-modules-3.13.0-35-generic N/A
linux-firmware 1.127.5
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/07/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0803
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81I-PLUS
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0803:bd01/07/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnH81I-PLUS:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
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References