kernel-packages team mailing list archive

[paraquat <1365844@xxxxxxxxxxxxxxxxxx>]

Hello Chris, I'm sorry that it has taken me so long to respond. The
truth is that none of the hoped-for fixes in the upstream kernels
worked. I waited awhile to see if things would get better, but they have
not.

Here are my latest experiments, and the results...

I downloaded and installed Ubuntu 14.10-beta2 today, and after updating
it, the kernel (as identified by the output of "uname -r") was
3.16.0-20-generic. That had the same bug, so no joy there.

I then went and downloaded the latest package for the latest upstream
kernel:

linux-
headers-3.17.0-031700rc7-generic_3.17.0-031700rc7.201409281835_amd64.deb

Installed this, rebooted, and confirmed that I was now running kernel
3.17.0-031700rc7-generic. But wireless was broken as before.

Removed the upstream kernel, ran update-grub just to be sure the system
would be bootable, and rebooted. Back in kernel 3.16.0-20-generic and
applied my workaround. A reboot later and I was OK, wireless fixed, but
not in a nice way.

I decided to give another distro a try, in particular, Linux Mint
Debian, which is based on Debian Testing. Same bug exists there, and
same workaround solves it. This is running kernel 3.11-2-amd64.

Well, at least it's not just a Ubuntu thing.

Let me know if you have any other experiments that you would like me to
try.

best regards,
Paraquat

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1365844

Title:
  0bda:8178 buggy driver rtl8192cu

Status in “linux” package in Ubuntu:
  Incomplete

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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