Driver update for WiFi RTL8188CUS stability.

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Driver update for WiFi RTL8188CUS stability.

Unread post by odroid » Fri Feb 07, 2014 6:21 pm

The official Xubuntu 13.10 image has the problem of WiFi RT8188CUS instability.
When we used the WiFi over 5~25 minutes continuously, the Internet connection was ramdonly disconnected.
To fix this issue, we ported the latest driver in the Realtek's homepage.
http://www.realtek.com.tw/downloads/dow ... =true#2742

Anothr issue was one of 3 USB hosts can't detect the WiFi module from time to time.
It was caused by different setting of USB PHY configuration of USB3503A HSIC-USB Hub controller IC.
So we also fixed that issue.



Download this script and run with sudo in the Terminal on U3 Xubuntu 13.10.

Code: Select all

wget builder.mdrjr.net/tools/kernel-update.sh
chmod +x kernel-update.sh
sudo kernel-update.sh
This script will download a package of Kernel, Ramdisk and driver modules.
After downloading, it will update your system.

Reboot and open a terminal.
Type 'lsusb' and you will see this one.

Code: Select all

ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Updated RTL8188CUS driver source code was pushed into our github.
https://github.com/hardkernel/linux/tree/odroid-3.8.y

Official update will be done by mdrjr next week hopefully. ;)

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Fri Feb 07, 2014 8:47 pm

Just a warn.. Do not run this script on Fedora/Debian images.
This is solely targeted for Ubuntu image.

I'll push an updated kernel tomorrow or today.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by atAnyTimeButNow » Sat Feb 08, 2014 12:02 am

alright... aaah... so, i followed the instructions above and after rebooting the odroid, my vertical usb port was gone. then i posted all my terminal command stuff here because i thought it was broken. Just to be sure I did a second reboot and everything worked just fine! ... embarrassing!

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by michael » Sat Feb 08, 2014 3:08 am

mdrjr wrote:Just a warn.. Do not run this script on Fedora/Debian images.
This is solely targeted for Ubuntu image.

I'll push an updated kernel tomorrow or today.
Should this be safe to run on robroy's Ubuntu/Lubuntu images?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sat Feb 08, 2014 3:54 am

Gimme a couple hours.. I'm uploading to my kernel-update to have this patch's

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sat Feb 08, 2014 9:34 am

Hi,

I have run the sudo ./update-kernel.sh; it has updated, but it does not seem to work anymore.

The board is connected using Rj-45 port and has x.x.x.x ip adress.
I get a RED light with a blinking BLUE.
I get connection ssh: connect to host x.x.x.x port 22: Operation timed out
ping: sendto: Host is down

Ideas?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sat Feb 08, 2014 9:41 am

You don't have a hdmi monitor connected?

Does the ethernet lights are showing?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sat Feb 08, 2014 10:02 am

Well, I did connect a HDMI since it isn't doing anything anymore. It does boot, but the keyboard does not work anymore. The mouse does though. Networking isn't kicking in either (wired/wireless).

From the boot sequence, I can barely make out something about module.dep 3.8.xxxx or so. The update must have failed somehow... :!:

I am now trying to load up the emmc card using the reader given, but the card is not recognized on my mac, ideas?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sat Feb 08, 2014 10:12 am

Probably a bad connection between the eMMC adapter and the microsd connector.
You don't have a uart kit right?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sat Feb 08, 2014 10:21 am

No I don't - I have tried another SC Card adapter and now my mac says that the filesystem isn't supported. At least I see it using diskutil list...

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sat Feb 08, 2014 10:25 am

Ok.. I don't have much experience on Mac. :(

But you can still flash it on mac.. there's on the how-to/guides section a guide for mac.
http://forum.odroid.com/viewtopic.php?f=53&t=1103

You can try it :)

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sat Feb 08, 2014 11:19 am

Hi,

I have flashed the emmc using the xubuntu-13.10-desktop-armhf_odroidu_20140107.img image and now the board has a steady RED and a dim BLUE (not blinking). I have flashed using the following command:

sudo dd bs=1m if=xubuntu-13.10-desktop-armhf_odroidu_20140107.img of=/dev/disk2

** EDIT **

I have flashed again, but after a clean reboot of my host, and going for the /dev/rdisk2 instead of the /dev/disk2; prior to the reboot, /dev/rdisk2 showed busy all the time.

So, I have finally been able to reload the emmc with the latest official image -- which brings me back to square one for the USB Wifi issue.

Am I to understand from http://forum.odroid.com/viewtopic.php?f ... ing#p29483 that I have to RMA my U3 due to bad USB ports?

Thanks
Last edited by homedroid on Sat Feb 08, 2014 11:51 am, edited 1 time in total.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sat Feb 08, 2014 11:51 am

Have you decompressed the image?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by wiweet » Sun Feb 09, 2014 9:41 am

odroid wrote:The official Xubuntu 13.10 image has the problem of WiFi RT8188CUS instability.
When we used the WiFi over 5~25 minutes continuously, the Internet connection was ramdonly disconnected.
To fix this issue, we ported the latest driver in the Realtek's homepage.
http://www.realtek.com.tw/downloads/dow ... =true#2742

Anothr issue was one of 3 USB hosts can't detect the WiFi module from time to time.
It was caused by different setting of USB PHY configuration of USB3503A HSIC-USB Hub controller IC.
So we also fixed that issue.



Download this script and run with sudo in the Terminal on U3 Xubuntu 13.10.
update-kernel.sh

Code: Select all

chmod +x update-kernel.sh
sudo ./update-kernel.sh
This script will download a package of Kernel, Ramdisk and driver modules.
After downloading, it will update your system.

Reboot and open a terminal.
Type 'lsusb' and you will see this one.

Code: Select all

ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Updated RTL8188CUS driver source code was pushed into our github.
https://github.com/hardkernel/linux/tree/odroid-3.8.y

Official update will be done by mdrjr next week hopefully. ;)
Can I use it for my Odroid U3 running odroidu2_20130125-linaro-ubuntu-desktop_SDeMMC.img ? Because when I try it, it goes fine up to updating kernel, ramdisk and driver module, but when I reboot, it would fail to boot to linaro-ubuntu.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sun Feb 09, 2014 10:55 am

If you run the kernel-update that I've made.. yes..
just make sure that /media/boot is mounted before running the script.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sun Feb 09, 2014 11:15 am

mdrjr wrote:Have you decompressed the image?
yes I have. As mentioned, I had to revert back to the official 13.10 image, as this update disabled me from booting with USB devices connected, let alone the Wifi.

I'll be waiting for another update prior to retrying this update... Perhaps it would be possible to test out these updates/images using partitions so that I can revert back easily?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Sun Feb 09, 2014 11:19 am

homedroid wrote:
mdrjr wrote:Have you decompressed the image?
yes I have. As mentioned, I had to revert back to the official 13.10 image, as this update disabled me from booting with USB devices connected, let alone the Wifi.

I'll be waiting for another update prior to retrying this update... Perhaps it would be possible to test out these updates/images using partitions so that I can revert back easily?
The kernel image right now has it fixed :P
Download the kernel-update again and run it :)

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by paroj » Mon Feb 10, 2014 3:00 am

odroid wrote: Download this script and run with sudo in the Terminal on U3 Xubuntu 13.10.
update-kernel.sh
it seems to me like this line is wrong:

Code: Select all

K_VERSION=`ls $TEMP/boot/config-* | sed s/"-"/" "/g | awk '{printf $3}'`
the file-name is config-3.8.13.16
so it should be

Code: Select all

K_VERSION=`ls $TEMP/boot/config-* | sed s/"-"/" "/g | awk '{printf $2}'`
because of that initrd generation fails and you end up with a system without usb modules at startup (no mouse no wifi). Even though I spotted that something went wrong, your script auto-rebooted the system so I had not chance to fix it manually.

By now I have learned how to chroot into arm from x86 and that I should properly read scripts I download from forums before executing them. But still I suggest checking for success before auto-rebooting after a kernel update..

Also is it possible for you to provide the updates as a dpkg?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Mon Feb 10, 2014 6:21 am

Weird.. my script doesn't reboot.

If you are using the script from this thread.. this isn't mines.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Mon Feb 10, 2014 8:29 am

mdrjr wrote:Weird.. my script doesn't reboot.

If you are using the script from this thread.. this isn't mines.
You mean to say that the commands at lines 47-49 aren't from the script on this thread?

update_kernel
clean_up
reboot <<---

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Mon Feb 10, 2014 8:30 am

mdrjr wrote:
homedroid wrote:
mdrjr wrote:Have you decompressed the image?
yes I have. As mentioned, I had to revert back to the official 13.10 image, as this update disabled me from booting with USB devices connected, let alone the Wifi.

I'll be waiting for another update prior to retrying this update... Perhaps it would be possible to test out these updates/images using partitions so that I can revert back easily?
The kernel image right now has it fixed :P
Download the kernel-update again and run it :)
Yes it finally works! Good work! Wifi is up and running just fine now!

A+

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Mon Feb 10, 2014 8:39 am

Ahh.. This thread's kernel-update .. sorry.. this isn't mines.

Code: Select all

wget builder.mdrjr.net/tools/kernel-update.sh
chmod +x kernel-update.sh
sudo ./kernel-update.sh

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by macey » Mon Feb 10, 2014 3:35 pm

Question regarding this device:-
Does it allow for WiFi connection sharing (via the ethernet connection)?
Sorry if been asked/answered before....

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Mon Feb 10, 2014 7:57 pm

Of course.. its just Linux... configure iptables or use network manage to configure that.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by macey » Mon Feb 10, 2014 9:11 pm

mdrjr wrote:Of course.. its just Linux... configure iptables or use network manage to configure that.
Great, thanks, just about to order my ODROID-U3 & stuff...

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by SteveW » Tue Feb 11, 2014 3:00 am

Now, you have me concerned, mdjr. Please clarify. Are there two different kernel-update.sh files, that perform different updates (one from you and one from odroid), or was that just a misunderstanding? It would be a mess if we have competing kernel updates.

Also, I have been trying two different Ralink-based USB WiFi adapters. I've been experiencing intermittent hangs, where the connection drops. It may be related to a USB problem, as sometimes, the entire USB bus hangs, and I have to unplug and replug the power to get it to restart. Both WiFi dongles use the rt2800usb driver, although the newer one is based on the RT3572 chip, and should use the rt35xx code. If you could keep those drivers up to date with whatever is the latest available version from Mediatek/Ralink, that would be great. Thanks.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Tue Feb 11, 2014 5:36 am

SteveW,

This update from odroid was done under emergency. I wasn't working on the last week.

Mines still the only one and official.. I'll update the OP

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by atAnyTimeButNow » Tue Feb 11, 2014 7:49 pm

@macey: i used network manager for sharing wifi. mode "Ad-hoc" and under IPv4 / Method "Shared to others". i guess this is the right way to do it, because it worked nicely for me.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by atAnyTimeButNow » Tue Feb 11, 2014 8:26 pm

so our options are to run either the update-kernel.sh with the driver from realtek
which makes it possible to have wifi on the vertical usb port, but is very unstable, and sometimes random usb devices don't work
or this: builder.mdrjr.net/tools/kernel-update.sh
which is stable, but the vertical usb can't be used for wifi

..... correct? sorry, but i'm a little confused

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Tue Feb 11, 2014 8:32 pm

Running the kernel-update.sh whould fix the usb stability issue

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by lohibolg » Wed Feb 12, 2014 1:08 am

Is there a way to make this update work with Debian images? Or has someone already done it?

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Wed Feb 12, 2014 1:12 am

lohibolg wrote:Is there a way to make this update work with Debian images? Or has someone already done it?
All the images that I released or are "OFFICIAL" are supported.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Wed Feb 12, 2014 9:19 am

I am experiencing some speed issues with the wifi... any ideas?

from odroid: iperf -c 192.168.1.XX
------------------------------------------------------------
Client connecting to 192.168.1.XX, TCP port 5001
TCP window size: 20.7 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.YY port 42876 connected with 192.168.1.XX port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-15.8 sec 1.12 MBytes 596 Kbits/sec

but the other way around:

from odroid: perf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 192.168.1.YY port 5001 connected with 192.168.1.XX port 53362
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.8 sec 3.00 MBytes 2.33 Mbits/sec

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Wed Feb 12, 2014 9:21 am

I've just updated a new ubuntu image that packs a new kernel..
This should be fixed.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Fri Feb 14, 2014 10:41 am

Hello,

I figured that connecting the ODROID Wifi dongle to the upper horizontal usb port, it connects/detects better. But I do have a pretty bad signal level (47/100, as low as 33 and highest seen being 55), whereas other devices are just fine. I would pretty much careless about the numbers, but the transfer speed is greatly impacted which makes it quite unusable.

Anyone has any ideas? Or can someone recommend another adapter (specific model# preferably, as I want to play around the shield and not with wifi dongles...

thanks

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by henke2 » Fri Feb 14, 2014 8:53 pm

homedroid wrote:Hello,

I figured that connecting the ODROID Wifi dongle to the upper horizontal usb port, it connects/detects better. But I do have a pretty bad signal level (47/100, as low as 33 and highest seen being 55), whereas other devices are just fine. I would pretty much careless about the numbers, but the transfer speed is greatly impacted which makes it quite unusable.

Anyone has any ideas? Or can someone recommend another adapter (specific model# preferably, as I want to play around the shield and not with wifi dongles...

thanks
I too see diffrences between the ports. I tried an extention coord too but no diffrence.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Fri Feb 14, 2014 9:30 pm

I too see diffrences between the ports. I tried an extention coord too but no diffrence.
I tried a bigger antenna .. But no difference...

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Sun Feb 16, 2014 2:00 am

So I am finally giving up on this adapter. I tried powered usb hubs, bigger antennas - it's just not working properly. Or perhaps it is the USB ports that misbehave. Anyhow, I am going to use the ODROID wired.

:(

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by henke2 » Tue Feb 18, 2014 6:10 pm

I have great problems with WIFI. I tried the U3 ubuntu image and two U2 images from the U2 part of the forums. The U3 image is the one working worst I must say and both U2 images connects to wifi but at an extreme low bitrate. This forum takes 5min to load for example. Sometimes it can move at 15mBit as it should but those periods are very short and motsly it's not working.

This is my greatest issue with U3 so far. Fighting with the ubuntu part would be so much easier if we could get a good working wifi. :|

I have not had any luck with Android yet, I can't manage to install it to emmc. I tried the bootloader upgrade and recommended diskwriter, but no luck. And I still feel ubuntu is the way to go.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by homedroid » Wed Feb 19, 2014 9:18 am

Let the wire reach your device! :-) I have a great speed now - but without the wifi... :-(

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by meveric » Wed Feb 19, 2014 4:00 pm

henke2 wrote:I have great problems with WIFI. I tried the U3 ubuntu image and two U2 images from the U2 part of the forums. The U3 image is the one working worst I must say and both U2 images connects to wifi but at an extreme low bitrate. This forum takes 5min to load for example. Sometimes it can move at 15mBit as it should but those periods are very short and motsly it's not working.

This is my greatest issue with U3 so far. Fighting with the ubuntu part would be so much easier if we could get a good working wifi. :|

I have not had any luck with Android yet, I can't manage to install it to emmc. I tried the bootloader upgrade and recommended diskwriter, but no luck. And I still feel ubuntu is the way to go.
I guess you have the Wifi Dongle 3?
If so, you should get the Wifi Dongle 2, or check on ebay or amazon for a wifi dongle with RTL8191SU chipset they should work a lot better then the Wifi Module 3
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Check out the Games and Emulators section to find some of my work or check the files in my repository to find the software i build for ODROIDs.
If you want to add my repository to your image read my HOWTO integrate my repo into your image.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by henke2 » Sat Feb 22, 2014 6:26 pm

meveric wrote:I guess you have the Wifi Dongle 3?
If so, you should get the Wifi Dongle 2, or check on ebay or amazon for a wifi dongle with RTL8191SU chipset they should work a lot better then the Wifi Module 3
Asus with RTL8188CUS

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by meveric » Sun Feb 23, 2014 4:09 am

RTL8188CUS, yep that is what the Wifi Module 3 is useing and is having issues.. the RTL8191SU is working out of the box without any issues.
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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by odroid » Sun Feb 23, 2014 3:43 pm

I heard a few RTL8191SU users had the compatibility issue with some 802.11n type APs.
Even the WiFi was connected, the real internet was not accessible.
So they should change the AP mode to b/g type.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by henke2 » Sun Feb 23, 2014 6:57 pm

As the Wifi issue seems to be unsolvable I found a way around it. I setup my old RT56U router as a wifi bridge. So now I have the odroid connected via LAN port without having to route a cable across the whole house. Getting 60Mbit of speed too compared to about 6Mbit the times the wifi actually worked.

This is not the perfect solution as I wanted to use multiple odroids for my various screens and projectors around the house, but I can not buy a router per odroid haha. I will however get me going on ubuntu without going insane on the wifi issue. :mrgreen:

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by butla » Sun May 11, 2014 3:04 am

mdrjr wrote:I've just updated a new ubuntu image that packs a new kernel..
This should be fixed.
Is the latest Xubuntu image (xubuntu-13.10-desktop-armhf_odroidu_20140211.img) from official downloads' site the one you were speaking about?
Should I run the kernel update script even though I have this image?

I have two Odroid-U3s (with the above image installed) and two WiFi identical adapters. One of the adapters doesn't work on the vertical ports in both Odroids.

[EDIT]: I've checked the script from builder.mdrjr.net/tools/kernel-update.sh on my image (don't know why I didn't do that before the original post) and it doesn't work - the WiFi dongle still doesn't work on the vertical port. It's not visible for lsusb. It also doesn't for Android on the same Odroid. Everything is ok on the horizontal ports.
I don't know what to make out of this. One of my adpters is slightly damaged in a way that prevents it from working on the vertical ports? This sounds somewhat ridiculous.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by Zylophone » Sun May 11, 2014 10:11 am


ben.vanderploeg
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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by ben.vanderploeg » Tue Aug 25, 2015 7:47 am

Ran kernel update and was ok, but still disconnects when in use for over 30 seconds (during large downloads, VNC, etc.) Have tried every other tutorial out there -- Realtek's patched driver wouldn't compile and install because it didn't have armv71 support. Starting to seem like a lost cause.

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Re: Driver update for WiFi RTL8188CUS stability.

Unread post by mdrjr » Tue Aug 25, 2015 8:48 am

Please create your own thread and not ressurect a thread that its over 1 year old.

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