On 9/28/18 5:02 AM, Simon Beginn wrote:
That value means that the signal strength is way too low. One other
possibility is that the chip has retained the setting and is not obeying the
antenna number command. To check that, create a file (as root) named
/etc/modprobe.d/50-r8723bs.conf, and add a single line containing "options
r8723bs rtw_ant_num=2" (without the quotation marks). After that file is
ready, then do a cold boot so that the chip has been power cycled. Finally,
redo the signal test. Note: If your patch is applied, the above will not work!
I've applied my patch and got the following results (btw good idea with the cold
boot!):
***FILE CREATED***
options rtl8723bs rtw_ant_num=1
***POWEROFF + 2 MINUTES WAITING***
***REBOOT + COMMAND***
sudo iw dev wlan0 scan | egrep "SSID|signal"
-> Desk
signal: -93.00 dBm
SSID: Gonzales
signal: -63.00 dBm
SSID: Gonzales
signal: -63.00 dBm
SSID: Gonzales
signal: -50.00 dBm
SSID: TPC_Install
-> Place A
signal: -93.00 dBm
SSID: Gonzales
signal: -45.00 dBm
SSID: Gonzales
signal: -62.00 dBm
SSID: Gonzales
signal: -64.00 dBm
SSID: TPC_Install
***FILE MODIFIED***
options rtl8723bs rtw_ant_num=2
***POWEROFF + 2 MINUTES WAITING***
***REBOOT + COMMAND***
sudo iw dev wlan0 scan | egrep "SSID|signal"
-> Desk
signal: -85.00 dBm
SSID: Gonzales
signal: -64.00 dBm
SSID: Gonzales
signal: -65.00 dBm
SSID: Gonzales
signal: -48.00 dBm
SSID: Gonzales
signal: -48.00 dBm
SSID: TPC_Install
-> Place A
signal: -79.00 dBm
SSID: Gonzales
signal: -45.00 dBm
SSID: Gonzales
signal: -63.00 dBm
SSID: Gonzales
signal: -63.00 dBm
SSID: TPC_Install
ccepted. Even if it had been correctly done, I would have NACKed it.
Sry, would you reformulate this, please? I just can't understand/determine what
the word "NACKed" means in this situation (Neither google or the raw translation
helps me).
I do not think that changing rtw_ant_num made any difference. In each location,
both tests had one AP with a signal greater than -50, which should be strong
enough. We do not know if the driver is roaming correctly. At each location, is
that AP with the strongest signal actually the one that is selected? To see
that, change the scan command to
sudo iw dev wlan0 scan | egrep "associated|SSID|signal"
Check the output to see if the AP with the strongest signal is preceded by a BSS
line.
Sorry about using jargon that you could not run through a translator. As Bastien
explained, NACK means to reject a patch. You accept a patch by providing an
"ACKed-by: name <email address>" line. Thus NACK is the opposite.
Larry
