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Old 08-12-2016, 07:58 AM   #1
themeone
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Registered: Mar 2008
Location: Croydon UK
Distribution: Debian
Posts: 33

Rep: Reputation: 15
Cannot scan networks with RTL8723BE


Despite trying numerous how-to's and trying different module options I'm unable to scan networks with my RT8723BE wireless.

The system is HP ProBook 455 running Debian testing, kernel 4.6.0-1-amd64.

Other information which may be useful:

Code:
Output of "lspci -nn | grep Wireless"
=====================================
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]

Output of "modinfo rtl8723be"
=============================
filename:       /lib/modules/4.6.0-1-amd64/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8723be/rtl8723be.ko
firmware:       rtlwifi/rtl8723befw.bin
description:    Realtek 8723BE 802.11n PCI wireless
license:        GPL
author:         Realtek WlanFAE	<wlanfae@realtek.com>
author:         PageHe	<page_he@realsil.com.cn>
alias:          pci:v000010ECd0000B723sv*sd*bc*sc*i*
depends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree:         Y
vermagic:       4.6.0-1-amd64 SMP mod_unload modversions 
parm:           swenc:Set to 1 for software crypto (default 0)
 (bool)
parm:           ips:Set to 0 to not use link power save (default 1)
 (bool)
parm:           swlps:Set to 1 to use SW control power save (default 0)
 (bool)
parm:           fwlps:Set to 1 to use FW control power save (default 1)
 (bool)
parm:           msi:Set to 1 to use MSI interrupts mode (default 0)
 (bool)
parm:           debug:Set debug level (0-5) (default 0) (int)
parm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)
 (bool)
parm:           ant_sel:Set to 1 or 2 to force antenna number (default 0)
 (int)

Output of "cat /etc/modprobe.d/rtl8723.conf"
============================================
options rtl8723be ips=0 ant_sel=2
I've also tried compiling a new module from https://github.com/lwfinger/rtlwifi_...ock.new.btcoex but get the following fatal errors when doing make:
Code:
/home/mark/Videos/rtlwifi_new-rock.new_btcoex/efuse.c:39:31: error: ‘RTL8712_SDIO_EFUSE_TABLE’ defined but not used [-Werror=unused-const-variable=]
 static const struct efuse_map RTL8712_SDIO_EFUSE_TABLE[] = {
                               ^~~~~~~~~~~~~~~~~~~~~~~~
/home/mark/Videos/rtlwifi_new-rock.new_btcoex/efuse.c:35:17: error: ‘MAX_PGPKT_SIZE’ defined but not used [-Werror=unused-const-variable=]
 static const u8 MAX_PGPKT_SIZE = 9;
Any ideas as to how to proceed would be welcome.

Last edited by themeone; 08-12-2016 at 08:07 AM.
 
Old 08-13-2016, 02:17 AM   #2
themeone
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Registered: Mar 2008
Location: Croydon UK
Distribution: Debian
Posts: 33

Original Poster
Rep: Reputation: 15
I eventually got the stock kernel module working, so no need to compile anything.

It seems I just needed different module options, so my /etc/modprobe.d/rtl8723be.conf now reads:

Code:
options rtl8723be fwlps=0 msi=1
I suspect it will not work for everyone, but hopefully will help some.

Last edited by themeone; 08-13-2016 at 02:18 AM.
 
  


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