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I am facing this issue recently instantly with my D-Link DWA-131 wireless adapter. Mine is Ubuntu 16.04 LTS. My adapter was working perfectly since past 3 years. All of a sudden since 2 days, I am facing the issue of slow internet. With the adapter, speed becomes less than 10MB/s. Without the adapter, It shows 80-90MB/s.

I am suspecting some issue is with the D-Link adapter / the driver. Also I cant rely on my inbuilt adapter as it doesn't work always & cant afford to replace motherboard.

Every time I reboot my laptop, I get this exception. Is this somehow causing any issue !!
Exception:
[0.056088] ipmi:dmi : Invalid offset : 0

kindly please help....
Please find results:-

himansu@master: sudo rfkill list all 0: dell-rbtn: Wireless LAN Soft blocked: no Hard blocked: no 1: hci0: Bluetooth Soft blocked: yes Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no

Uploaded the result of wireless-info at the link https://paste.ubuntu.com/p/DhpjzZpd2k/

himansu@master: ./wireless-info && cat wireless-info.txt | nc terbin.com 9999

Results saved in "/home/himansu/wireless-info.txt".

Results also archived in "/home/himansu/wireless-info.tar.gz", as they exceed the 19.5 kB size limit for ".txt" attachments on the Ubuntu Forums.

himansu@master: nc terbin.com 9999
himansu@master:

I updated the details at https://paste.ubuntu.com/p/Sz3mtCbBKf/

Himansu
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  • @chilli555 Kindly help – Himansu Dec 06 '18 at 17:34
  • Please see https://askubuntu.com/questions/425155/my-wireless-wifi-connection-does-not-work-what-information-is-needed-to-diagnos and edit the question to include results – Jeremy31 Dec 06 '18 at 18:43
  • @Jeremy31 Updated the question with required logs. Please check – Himansu Dec 07 '18 at 03:09
  • @Jeremy31 Please let me know, If any other logs I need to share for troubleshooting. – Himansu Dec 07 '18 at 18:20
  • Why are you forcing it to load rtl8192cu and using the echo "2001 3319" | tee /sys/bus/usb/drivers/rtl8192cu/new_id I would get rid of that, then do sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/* and reboot – Jeremy31 Dec 07 '18 at 22:22
  • Hi @Jeremy31, I made the changes. But still the same issue. My motherboard adapter is having issue. So I am using DWA-131 adapter as substitute. May be that was the reason to enforce to load the driver. The changes were done 2 years ago. So I dont recall. I am not sure, if there is issue with my hardware- DWA-131 adapter or the software. – Himansu Dec 08 '18 at 08:55

1 Answers1

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You can try a module built from source code on github 

sudo apt-get install git build-essential dkms
git clone https://github.com/Mange/rtl8192eu-linux-driver.git
sudo dkms add rtl8192eu-linux-driver
sudo dkms install rtl8192eu/1.0
echo "blacklist rtl8xxxu" | sudo tee /etc/modprobe.d/rtl8xxxu.conf

Reboot

Jeremy31
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  • Hi @Jeremy31 After this, my laptop wifi is working but crashes randomly after few hours. Also my D-Link dwa-131 wifi adapter is not working at all. Kindly suggest. – Himansu Jan 01 '19 at 06:30
  • Run ./wireless-info && cat wireless-info.txt | nc termbin.com 9999 post URL – Jeremy31 Jan 01 '19 at 12:55
  • Hi @Jeremy31, I run the command. logs are updated in the question & output pasted at the link. – Himansu Jan 01 '19 at 17:28
  • try echo lp | sudo tee /etc/modules remove that line from /etc/rc.local then reboot. Why is the internal Intel wifi not enabled? – Jeremy31 Jan 01 '19 at 18:07
  • The changes to /etc/modules & /etc/rc.local was done 2 years back, when I had issues with my internal wifi adapter. I guess, that was the reason, internal wifi was disabled & the external wifi driver was enabled for continuous connection. – Himansu Jan 01 '19 at 18:51
  • I am not sure how that worked at all trying to use the rtl8192cu module to run a rtl8192eu chipset – Jeremy31 Jan 01 '19 at 18:53
  • steps implemented as per this... https://askubuntu.com/questions/910793/dwa-131-wireless-adapter-not-working-16-04-lts – Himansu Jan 02 '19 at 06:39
  • Hi @Jeremy31 After performing the steps you suggested, the connection is working fine. I have not used extensively yet. I will update you on this. Thanks a lot for the help. – Himansu Jan 04 '19 at 06:10