Unfortunately "all the necessary information" needs to be merged into
rtl8xxxu driver. Please file an upstream bug or ask maintainers on
mailing list.
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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https://bugs.launchpad.net/bugs/1572698
Title:
[patch included]Slow speed and dropped connections with Realtek
RTL8192CU-based wifi
Status in linux package in Ubuntu:
Triaged
Bug description:
EDIT(other user): Some one fixed it in github, still works in at least in
linux 4.4-4.11
https://github.com/pvaret/rtl8192cu-fixes
EDIT:
I am using a D-Link DWA-131 USB wlan adapter to connect to my private wlan.
The adapter works fine under Windows and I have no problems connecting to my
wlan with other devices (e.g. my laptop running Linux Mint).
However, the adapter, which is based on the Realtek rtl8192cu chipset, won't
work correctly on any current Ubuntu machine (in my case Kubuntu 15.10 64bit):
As also showcased by a myriad of other bug reports (most of which have
expired by now), wlan-adapters based on the Realtek rtl8192cu chipset exhibit
very slow connection speeds and frequently dropped connections with current
Linux kernels.
I have noticed this originally in Linux Mint 17 running kernel 3.19.x, in
Kubuntu 15.10 up to 4.2.0.35 and can confirm that it is still present in a live
session of Xenial Xerus (16.04).
I have tried commonly mentioned "fixes" such as deactivating hardware
encryption without success.
The drivers available on the Realtek homepage are apparently intended
for older kernels and won't install.
There is, however, a fixed driver available via github
(https://github.com/pvaret/rtl8192cu-fixes).
I have followed the instructions found there and finally my wlan-adapter is
working correctly.
Apparently the issues caused by the broken driver in the linux kernels might
be connected to power management.
I am posting this bug here in the hope that some developer finally manages to
incorporate the (obviously available) fixes found in the github-drivers into
the drivers already included in the kernel.
---
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: patrick 2300 F.... pulseaudio
/dev/snd/controlC1: patrick 2300 F.... pulseaudio
DistroRelease: Ubuntu 15.10
HibernationDevice: RESUME=UUID=28c49a78-8b93-495e-bc1b-22c87db4734c
InstallationDate: Installed on 2015-10-22 (181 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Gigabyte Technology Co., Ltd. GA-870A-UD3
NonfreeKernelModules: fglrx
Package: linux (not installed)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-35-generic
root=UUID=1016b861-fa27-4990-bac9-58a3ab27ff5b ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.2.0-35-generic N/A
linux-backports-modules-4.2.0-35-generic N/A
linux-firmware 1.149.3
RfKill:
Tags: wily
UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden:
'/var/log/udev'
Uname: Linux 4.2.0-35-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 08/01/2011
dmi.bios.vendor: AwardAward (授与する, じゅよする, juyosuru) Software International,
Inc.
dmi.bios.version: F5
dmi.board.name: GA-870A-UD3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF5:bd08/01/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-870A-UD3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-870A-UD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-870A-UD3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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