Advices to install a module for RTL8188EUS

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br_Orion
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Advices to install a module for RTL8188EUS

Postby br_Orion » Fri Nov 28 2014 - 14:36:59

I had this https://wikidevi.com/wiki/TP-LINK_TL-WN725N_v2 usb wifi adapter.
Following this guide http://raspberry-at-home.com/installati ... wn725n-v2/ i should install a module to make it work.
I did the how to, but now the rpi do not boot anymore.
I will do a new fresh installation and ill try other way to install it.
So, any advices? A slackbuild maybe? Any hints or some similar slackbuild where i can get some info to start?

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Re: Advices to install a module for RTL8188EUS

Postby linicks » Fri Nov 28 2014 - 17:19:48

Seeing as you posted here, I guess you are running Slack Pi... well, if so then I doubt that kernel module is the right compiled version.

If you get the source code for your exact kernel version, you can then just build that kernel module as detailed here:

http://www.linuxquestions.org/questions ... le-595116/

Nick

EDIT: Just thinking, you may not need do a reinstall. Mount the SD card in another machine, and add that dodgy module to a file -> /etc/modprobe.d/blacklist.conf in the format:

Code: Select all

blacklist 8188eu


That might stop the kernel loading the module and allow your Pi to come up. Then you can remove it properly.
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Re: Advices to install a module for RTL8188EUS

Postby br_Orion » Fri Nov 28 2014 - 20:55:59

thks i will do that
also more result that google does not provide in first instance:
https://github.com/notro/rpi-source/wik ... 2-lwfinger

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Re: Advices to install a module for RTL8188EUS

Postby linicks » Sat Nov 29 2014 - 12:57:32

I just grabbed the module you used and ran modinfo on it:

Code: Select all

modinfo /lib/modules/3.12.33+/kernel/drivers/net/wireless/8188eu.ko
filename:       /lib/modules/3.12.33+/kernel/drivers/net/wireless/8188eu.ko
version:        v4.1.4_6773.20130222
author:         Realtek Semiconductor Corp.
description:    Realtek Wireless Lan Driver
license:        GPL
srcversion:     EC6807C05C023B02099CD76
alias:          usb:v8179p07B8d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0BDAp0179d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0BDAp8179d*dc*dsc*dp*ic*isc*ip*in*
depends:       
vermagic:       3.6.11 preempt mod_unload modversions ARMv6
parm:           rtw_ips_mode:The default IPS mode (int)
parm:           ifname:The default name to allocate for first interface (charp)
parm:           if2name:The default name to allocate for second interface (charp)
parm:           rtw_initmac:charp
parm:           rtw_channel_plan:int
parm:           rtw_chip_version:int
parm:           rtw_rfintfs:int
parm:           rtw_lbkmode:int
parm:           rtw_network_mode:int
parm:           rtw_channel:int
parm:           rtw_mp_mode:int
parm:           rtw_wmm_enable:int
parm:           rtw_vrtl_carrier_sense:int
parm:           rtw_vcs_type:int
parm:           rtw_busy_thresh:int
parm:           rtw_ht_enable:int
parm:           rtw_cbw40_enable:int
parm:           rtw_ampdu_enable:int
parm:           rtw_rx_stbc:int
parm:           rtw_ampdu_amsdu:int
parm:           rtw_lowrate_two_xmit:int
parm:           rtw_rf_config:int
parm:           rtw_power_mgnt:int
parm:           rtw_smart_ps:int
parm:           rtw_low_power:int
parm:           rtw_wifi_spec:int
parm:           rtw_antdiv_cfg:int
parm:           rtw_antdiv_type:int
parm:           rtw_enusbss:int
parm:           rtw_hwpdn_mode:int
parm:           rtw_hwpwrp_detect:int
parm:           rtw_hw_wps_pbc:int
parm:           rtw_max_roaming_times:The max roaming times to try (uint)
parm:           rtw_fw_iol:FW IOL (int)
parm:           rtw_mc2u_disable:int
parm:           rtw_80211d:Enable 802.11d mechanism (int)
parm:           rtw_notch_filter:0:Disable, 1:Enable, 2:Enable only for P2P (uint)
parm:           debug:Set debug level (1-9) (default 1) (int)


It is indeed the wrong version - look at vermagic arg above.

Nick
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Re: Advices to install a module for RTL8188EUS

Postby linicks » Sat Nov 29 2014 - 13:13:45

OK, see this page - I just got that module for my version kernel 3.12.33+:

http://www.raspberrypi.org/forums/viewt ... 82#p462982

Code: Select all

modinfo 8188eu.ko
filename:       /root/8188eu.ko
version:        v4.1.8_9499.20131104
author:         Realtek Semiconductor Corp.
description:    Realtek Wireless Lan Driver
license:        GPL
srcversion:     66CDCAD22C1F82CE3B3FBAE
alias:          usb:v056Ep4008d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v2001p3311d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0DF6p0076d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v2001p3310d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v2001p330Fd*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v07B8p8179d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0BDAp0179d*dc*dsc*dp*ic*isc*ip*in*
alias:          usb:v0BDAp8179d*dc*dsc*dp*ic*isc*ip*in*
depends:       
vermagic:       3.12.32+ preempt mod_unload modversions ARMv6
parm:           rtw_ips_mode:The default IPS mode (int)


Nick
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Q. What is the difference between a duck and an elephant?
A. You can't get down off an elephant.

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Re: Advices to install a module for RTL8188EUS

Postby br_Orion » Mon Dec 01 2014 - 14:48:09

The rpi it is booting after all, from this link http://raspberry-at-home.com/installati ... wn725n-v2/ , which is the wrong version.
Its been a long time since i boot the rpi without the eth plugged in (i cant even remember when i did it last time), and i always expected the red and green light wink thinking that was boot occured ok.
So, when i removed the eth and didnt see those lights my mistake was not check the LAN for the rpi IP shows up. Then i assumed that i did something wrong with the kernel :roll: . Sorry to bother here...
Anyway will batch for install the correct kernel module or the source to the next update.

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Re: Advices to install a module for RTL8188EUS

Postby linicks » Mon Dec 01 2014 - 18:50:30

br_Orion wrote:Sorry to bother here...


No problem - glad you got it sorted :)

Nick
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Q. What is the difference between a duck and an elephant?
A. You can't get down off an elephant.

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Re: Advices to install a module for RTL8188EUS

Postby br_Orion » Fri Feb 27 2015 - 01:40:39

At the time at this post on kernel 3.18.7+ on Raspberry B the stagging module from kernel tree plus the options for power management are working fine for RTL8188EUS which is 0BDA:8179.
Just a heads up.

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