[SOLVED] Wifi connection dropping, is there a cure?

Message

bryanmc · #1 Post by **bryanmc** » 2016-11-20 20:54

I have Debian Jessie (installed from the "hybrid" non-free iso) running on an older Toshiba laptop. It has a Realteck RTL8188CE wireless adapter and an Atheros AR8152 v1.1 ethernet adapter. The problem I'm having is that the wireless connection will drop intermittently and I will have to switch off wifi in the network manager and switch it back on to make it transfer data again, even though it shows the connection is still up. I have done several searches and found many "fixes" which haven't helped the issue. Does anyone know if an actual fix exists?

Dai_trying · #2 Post by **Dai_trying** » 2016-11-20 21:11

This was the first response from google
I had similar issues with a RTL8192CE and had to compile my own driver (from a different source) which worked flawlessly afterwards.

This is the one I used for my 8192 card, and it might support 8188 but the readme says it is hit and miss so might not work.

bryanmc · #3 Post by **bryanmc** » 2016-11-21 01:28

Thanks... I ran through the process in the google link you provided (I had tried a similar suggestion from a different repository). It actually made the connection drop more frequently, thankfully I had a clean clone image to restore so I'm still on the hunt for the cure.

Bulkley · #4 Post by **Bulkley** » 2016-11-21 02:54

I have a Toshiba Satellite L745 that came with a RTL8192CE mini Wifi card. It drove me nuts for several months dropping connections. Nothing I could do with software helped. In frustration I swapped out the card for one from Intel and it has never dropped a connection since. At that time there were complaints about Toshiba's use of the Realteck card all over the Internet.

Try what you can with different drivers. Maybe they have improved drivers since then but keep in mind that the Realteck card may itself be the problem.

bryanmc · #5 Post by **bryanmc** » 2016-11-21 03:06

Changing cards may be the next option. I thought about it but wasn't sure if the bios would reject it or not.

v&n · #6 Post by **v&n** » 2016-11-21 05:31

How about showing us some diagnostics info about your card/setup? Instead of going into a bunch of commands, a quick script for that : http://forums.debian.net/viewtopic.php?p=579154#p579154

Ardouos · #7 Post by **Ardouos** » 2016-11-21 12:49

Seems similar to this issue:
http://forums.debian.net/viewtopic.php? ... ilit=fwlps

Have you tried blacklisting options for the card?

Code: Select all

echo "options rtl8188ce fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8188.conf

bryanmc · #8 Post by **bryanmc** » 2016-11-21 13:23

v&n wrote:How about showing us some diagnostics info about your card/setup?

Here's the info you requested. Appreciate the help.

Code: Select all

 
	======== Wireless-Info START ========

System-Info ~~~~~~~~~~~~~~~~~~~~~~~~

zeus 3.16.0-4-amd64 x86_64,  Debian GNU/Linux 8.6 (jessie), jessie

CPU    : AMD E-300 APU with Radeon(tm) HD Graphics
Memory : 3560 MB
Uptime : 07:15:53 up 8 min,  2 users,  load average: 0.36, 0.52, 0.33


lspci ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)
	Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:8181]
	Kernel driver in use: rtl8192ce
06:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8152 v1.1 Fast Ethernet [1969:2060] (rev c1)
	Subsystem: Toshiba America Info Systems Device [1179:ff1e]
	Kernel driver in use: atl1c


lsusb ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Bus 003 Device 002: ID 10f1:1a34 Importek 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


PCMCIA Card Info ~~~~~~~~~~~~~~~~~~~



iwconfig ~~~~~~~~~~~~~~~~~~~~~~~~~~~

wlan1     IEEE 802.11bgn  ESSID:"lchouse"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: <MAC C-01 lchouse>   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-34 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:8   Missed beacon:0



rfkill ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

wl                   6299053  0 
rtl8192ce              52164  0 
rtl_pci                25947  1 rtl8192ce
rtlwifi                54719  2 rtl_pci,rtl8192ce
rtl8192c_common        40162  1 rtl8192ce
mac80211              482315  3 rtl_pci,rtlwifi,rtl8192ce
cfg80211              413730  3 wl,mac80211,rtlwifi
wmi                    17339  1 toshiba_acpi


module parameters ~~~~~~~~~~~~~~~~~~

cfg80211      (2): cfg80211_disable_40mhz_24ghz=N | ieee80211_regdom=00
mac80211      (5): beacon_loss_count=7 | ieee80211_default_rc_algo=minstrel_ht | max_nullfunc_tries=2 | max_probe_tries=5 | probe_wait_ms=500
rtl8192ce     (5): debug=0 | fwlps=N | ips=N | swenc=N | swlps=N
wmi           (2): debug_dump_wdg=N | debug_event=N


nm-tool ~~~~~~~~~~~~~~~~~~~~~~~~~~~~


================o======o========o========o=========o===========o==============o===========
 Interface & ID | Type | Driver | State  | Default | Speed     | Support      | HW Addr   
================o======o========o========o=========o===========o==============o===========
                |      |        |        |         |           |              |           
----------------+------+--------+--------+---------+-----------+--------------+-----------


NetworkManager.state ~~~~~~~~~~~~~~~
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true


NetworkManager.conf ~~~~~~~~~~~~~~~~

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false


NM WiFi Profiles ~~~~~~~~~~~~~~~~~~~
 


interfaces ~~~~~~~~~~~~~~~~~~~~~~~~~

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

resolv.conf ~~~~~~~~~~~~~~~~~~~~~~~~

nameserver 192.168.0.1


Routes & Ping ~~~~~~~~~~~~~~~~~~~~~~

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    1024   0        0 wlan1
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlan1
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 wlan1

--- 192.168.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 1.425/2.164/2.904/0.740 ms

--- 192.168.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 1.333/1.393/1.454/0.071 ms


iw reg get ~~~~~~~~~~~~~~~~~~~~~~~~~

(Region : "en_US.UTF-8")
country 00: DFS-UNSET
	(2402 - 2472 @ 40), (N/A, 20), (N/A)
	(2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
	(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
	(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
	(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
	(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
	(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
	(57240 - 63720 @ 2160), (N/A, 0), (N/A)


iwlist chan ~~~~~~~~~~~~~~~~~~~~~~~~

wlan1     13 channels in total; available frequencies :
          Channel 01 (2.412 GHz) - 13 (2.472 GHz)

          Current Frequency:2.412 GHz (Channel 1)


iwlist scan ~~~~~~~~~~~~~~~~~~~~~~~~

wlan1     Scan completed :
          Cell 01 - Address: <MAC C-01 lchouse>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=70/70  Signal level=-38 dBm  
                    Encryption key:on
                    ESSID:"lchouse"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000001e4584c1a3
                    Extra: Last beacon: 72ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: <MAC C-02 DIRECT-roku-17284E>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=67/70  Signal level=-43 dBm  
                    Encryption key:on
                    ESSID:"DIRECT-roku-17284E"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000001195862c484
                    Extra: Last beacon: 72ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 03 - Address: <MAC C-03 NETGEAR69>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=26/70  Signal level=-84 dBm  
                    Encryption key:on
                    ESSID:"NETGEAR69"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000011984c7d180
                    Extra: Last beacon: 3580ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 04 - Address: <MAC C-04 suddenlink.net-8040>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=22/70  Signal level=-88 dBm  
                    Encryption key:on
                    ESSID:"suddenlink.net-8040"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000011954e2e152
                    Extra: Last beacon: 3564ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
          Cell 05 - Address: <MAC C-05 suddenlink.net-4B25>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=34/70  Signal level=-76 dBm  
                    Encryption key:on
                    ESSID:"suddenlink.net-4B25"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000001194849e180
                    Extra: Last beacon: 472ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK


blacklist ~~~~~~~~~~~~~~~~~~~~~~~~~~

[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode

[/etc/modprobe.d/broadcom-sta-dkms.conf]
blacklist b43
blacklist b43legacy
blacklist b44
blacklist bcma
blacklist brcm80211
blacklist brcmsmac
blacklist ssb

[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode


modinfo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[wl]
filename:       /lib/modules/3.16.0-4-amd64/updates/dkms/wl.ko
depends:        cfg80211
parm:           passivemode:int
parm:           wl_txq_thresh:int
parm:           oneonly:int
parm:           piomode:int
parm:           instance_base:int
parm:           nompc:int
parm:           intf_name:string

[rtl8192ce]
filename:       /lib/modules/3.16.0-4-amd64/kernel/drivers/net/wireless/rtlwifi/rtl8192ce/rtl8192ce.ko
firmware:       rtlwifi/rtl8192cfwU_B.bin
firmware:       rtlwifi/rtl8192cfwU.bin
firmware:       rtlwifi/rtl8192cfw.bin
depends:        rtlwifi,rtl_pci,rtl8192c-common,mac80211
parm:           swenc:Set to 1 for software crypto (default 0)
parm:           ips:Set to 0 to not use link power save (default 1)
parm:           swlps:Set to 1 to use SW control power save (default 0)
parm:           fwlps:Set to 1 to use FW control power save (default 1)
parm:           debug:Set debug level (0-5) (default 0) (int)

[rtl_pci]
filename:       /lib/modules/3.16.0-4-amd64/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko
depends:        mac80211,rtlwifi

[rtlwifi]
filename:       /lib/modules/3.16.0-4-amd64/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
depends:        mac80211,cfg80211

[rtl8192c_common]
filename:       /lib/modules/3.16.0-4-amd64/kernel/drivers/net/wireless/rtlwifi/rtl8192c/rtl8192c-common.ko
depends:        

[mac80211]
filename:       /lib/modules/3.16.0-4-amd64/kernel/net/mac80211/mac80211.ko
depends:        cfg80211
parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)

[cfg80211]
filename:       /lib/modules/3.16.0-4-amd64/kernel/net/wireless/cfg80211.ko
depends:        rfkill
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

[wmi]
filename:       /lib/modules/3.16.0-4-amd64/kernel/drivers/platform/x86/wmi.ko
depends:        
parm:           debug_event:Log WMI Events [0/1] (bool)
parm:           debug_dump_wdg:Dump available WMI interfaces [0/1] (bool)


udev rules ~~~~~~~~~~~~~~~~~~~~~~~~~

# PCI device 0x1969:0x2060 (atl1c)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC eth0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# USB device 0x:0x (ax88179_178a)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC eth1>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

# PCI device 0x10ec:0x8176 (rtl8192ce)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC wlan0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

# PCI device 0x10ec:0x8176 (rtl8192ce)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC wlan1>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan1"


Custom files/entries ~~~~~~~~~~~~~~~

/etc/modules        : Default
/etc/rc.local       : Default
/etc/modprobe.d     : Not Default
/etc/pm/(cnf|pw|sl) : Default

[/etc/modprobe.d]
modesetting.conf  : options cirrus modeset=1
                    options mgag200 modeset=1
nvidia.conf       : alias nvidia nvidia-current
                    remove nvidia-current rmmod nvidia-uvm nvidia
nvidia-kernel-common.conf: alias char-major-195* nvidia
                    options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=44 NVreg_DeviceFileMode=0660
open-vm-tools-dkms.conf: install pcnet32 /sbin/modprobe -q --ignore-install vmxnet; /sbin/modprobe -q --ignore-install pcnet32 $CMDLINE_OPTS; /bin/true;
rtl8192.conf      : options rtl8192ce fwlps=0 ips=0


Kernel boot line ~~~~~~~~~~~~~~~~~~~

BOOT_IMAGE=/boot/vmlinuz-3.16.0-4-amd64 root=UUID=1423307c-2acf-46ff-a656-7ff4190207d9 ro initrd=/install/gtk/initrd.gz quiet


dmesg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[    0.024372] Initializing cgroup subsys net_cls
[    0.024406] Initializing cgroup subsys net_prio
[    1.797103] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[    1.798659] audit: initializing netlink subsys (disabled)
[    1.981389] radeon 0000:00:01.0: firmware: direct-loading firmware radeon/PALM_pfp.bin
[    1.981431] radeon 0000:00:01.0: firmware: direct-loading firmware radeon/PALM_me.bin
[    1.981463] radeon 0000:00:01.0: firmware: direct-loading firmware radeon/SUMO_rlc.bin
[    1.981918] radeon 0000:00:01.0: firmware: direct-loading firmware radeon/SUMO_uvd.bin
[    3.112497] psmouse serio1: elantech: assuming hardware version 3 (with firmware version 0x250f01)
[    4.867515] platform microcode: firmware: direct-loading firmware amd-ucode/microcode_amd.bin
[    9.817746] wmi: Mapper loaded
[   11.647133] rtl8192ce: rtl8192ce: Power Save off (module option)
[   11.647148] rtl8192ce: rtl8192ce: FW Power Save off (module option)
[   11.647180] rtl8192ce: Using firmware rtlwifi/rtl8192cfw.bin
[   11.711109] rtl8192ce 0000:02:00.0: firmware: direct-loading firmware rtlwifi/rtl8192cfw.bin
[   11.741358] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   11.742218] rtlwifi: wireless switch is on
[   12.377566] systemd-udevd[204]: renamed network interface wlan0 to wlan1
[   19.864294] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
[   21.104739] wlan1: authenticate with <MAC C-01 lchouse>
[   21.115033] wlan1: send auth to <MAC C-01 lchouse> (try 1/3)
[   21.123961] wlan1: authenticated
[   21.128749] wlan1: associate with <MAC C-01 lchouse> (try 1/3)
[   21.132884] wlan1: RX AssocResp from <MAC C-01 lchouse> (capab=0x431 status=0 aid=3)
[   21.133079] wlan1: associated
[   21.133219] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready

	======== Done ========

]

bryanmc · #9 Post by **bryanmc** » 2016-11-21 13:26

Ardouos wrote:Seems similar to this issue:
http://forums.debian.net/viewtopic.php? ... ilit=fwlps

Have you tried blacklisting options for the card?
Code: Select all
echo "options rtl8188ce fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8188.conf

Yes, I've tried that... no change.

falcon_cmh · #10 Post by **falcon_cmh** » 2016-11-22 03:57

Another thought would be to update firmware on your WiFi Router. Not to say the RealTek card isn't the problem here. Also after you update the firmware you might try the guy's compile your own driver suggestion above again.

v&n · #11 Post by **v&n** » 2016-11-22 08:30

bryanmc wrote:

Code: Select all

lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

wl                   6299053  0 
.... <snip> ....
cfg80211              413730  3 wl,mac80211,rtlwifi

What is 'wl' doing in there when there are no broadcom devices present? Did you load it manually or is it loading automatically on boot? I suggest removing it by either purging it (if is not needed) or by blacklisting it. As you can see in the quoted part above, it may be creating a conflict for cfg80211 driver.

bryanmc · #12 Post by **bryanmc** » 2016-11-22 13:20

v&n wrote:
bryanmc wrote:
Code: Select all
lsmod ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

wl                   6299053  0 
.... <snip> ....
cfg80211              413730  3 wl,mac80211,rtlwifi
What is 'wl' doing in there when there are no broadcom devices present? Did you load it manually or is it loading automatically on boot? I suggest removing it by either purging it (if is not needed) or by blacklisting it. As you can see in the quoted part above, it may be creating a conflict for cfg80211 driver.

I have no idea . I didn't load it (could it be from my usb ethernet dongle?). What would be the best way to purge it?

v&n · #13 Post by **v&n** » 2016-11-22 14:45

The 'wl' module is for wifi cards, and only PCI ones (from what I can see in modinfo on an old version of it here). So no, it can't be for your Ethernet adapter.

bryanmc wrote:What would be the best way to purge it?

First, check which of the 'broadcom-sta-*' packages is installed -

Code: Select all

dpkg -l | grep broadcom

The installed packages should show up with the line(s) starting with "ii". Once identified (most probably it would be "broadcom-sta-dkms"), purge it with -

Code: Select all

# apt-get purge <package name(s)>

Reboot shouldn't be necessary, but if purging it alone doesn't seem to help, go for it.

bryanmc · #14 Post by **bryanmc** » 2016-11-22 18:28

Purged the broadcom package and the wl driver is no longer showing in lsmod, however, the problem persists.

Falcon_cmh: There are no available updates for the router.

falcon_cmh · #15 Post by **falcon_cmh** » 2016-11-22 22:53

Not to beat a dead horse but how about trying a different router if you have one. I know I have had better success with ASUS routers instead of DLink and Netgear but no matter what router I used I had to get updates to the firmware several times before they worked properly. I know these guys with the latest routers tend to use the same chips like Broadcom. The firmware they were released with was sub-par no matter the mfg when the router first came out. Connection dropping was one of the most prevalent issues. And of course distance is an issue sometimes too but I am sure you know all that. Also some routers work with third party firmware.

Bulkley · #16 Post by **Bulkley** » 2016-11-22 23:48

bryanmc, is your laptop dropping connections when you are out and about or is this just a problem at home? If it's the latter, falcon_cmh might be right. Tuning a home router should be a must whenever in doubt. If a neighbour is using the same channel as you are you might be competing. Is Your Wireless Connection Dropping? Amazingly, some routers are directional; simply rotating it 90 degrees can make a big difference.

dasein · #17 Post by **dasein** » 2016-11-23 00:05

The larger point is that WiFi issues can be difficult-to-impossible to diagnose. There are simply too many variables that can't be controlled (including and in particular RFI).

bryanmc · #18 Post by **bryanmc** » 2016-11-23 00:12

Bulkley wrote:bryanmc, is your laptop dropping connections when you are out and about or is this just a problem at home? If it's the latter, falcon_cmh might be right. Tuning a home router should be a must whenever in doubt. If a neighbour is using the same channel as you are you might be competing. Is Your Wireless Connection Dropping? Amazingly, some routers are directional; simply rotating it 90 degrees can make a big difference.

I haven't had the laptop out of the house to check it. It's dropping the signal 8ft across the room from the router. My wife's win 10 laptop, my mint 18 netbook and various other wifi devices in the house are not having the issue. Running

Code: Select all

sudo iwlist wlan1 scan | grep \(channel

shows my router on ch1 another on ch3 and another on ch11. The houses in my neighborhood are all on 1/2 acre lots so it's not like an apt building where interference could be an issue.

dasein · #19 Post by **dasein** » 2016-11-23 00:16

bryanmc wrote:... it's not like an apt building where interference could be an issue.

You have a profoundly misinformed notion of when/how RFI "could" be an issue. Diagnosing WiFi problems is hard enough without you rejecting ideas without testing them.

bw123 · #20 Post by **bw123** » 2016-11-23 00:23

my router on ch1 another on ch3 and another on ch11

So you set yours to channel 7 and don't let it move. Stake out your territory, because those other routers are probably switching channels constantly. Also, you should be aware of overlapping coverage, or "blind spots" when routers conflict with each other, no matter what channel they are on. It has to do with the ACK signal from sent packages, there's a wiki page somewhere. can't recall the topic.

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Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?

Re: Wifi connection dropping, is there a cure?