Linux Mint Forums

by **Arnas** on Tue Nov 13, 2012 5:47 pm

Hello,
I installed Mint to my secondary machine (a laptop - Asus F3Jc) back in summer. Wireless worked perfectly fine...
..until recently.
Basically, my problem is that something makes the Wireless signal quality decrease - up to the point where I get terrible speeds or even random disconnects from time to time. I tried various solutions that I found on the internet (like installing wicd), but nothing helps.
Also, after scanning, wicd reports the signal strength at around 50 percent. After connecting it shows 60, later drops to 50. If it drops to 40, the problems start.

by **remoulder** on Tue Nov 13, 2012 6:29 pm

You need to provide more information when posting in here, see http://forums.linuxmint.com/viewtopic.php?f=53&t=1085

by **Arnas** on Wed Nov 14, 2012 8:57 am

OK, here it is:

Code: Select all: Namai2 arnas # sudo /usr/lib/linuxmint/mintWifi/mintWifi.py ------------------------- * I. scanning WIFI PCI devices... -- Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) ==> PCI ID = 8086:4222 (rev 02) ------------------------- * II. querying ndiswrapper... ------------------------- * III. querying iwconfig... lo no wireless extensions. wlan0 IEEE 802.11abg ESSID:"Namai" Mode:Managed Frequency:2.462 GHz Access Point: D4:D1:84:A8:C9:2B Bit Rate=24 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=26/70 Signal level=-84 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:5 Invalid misc:1304 Missed beacon:0 eth0 no wireless extensions. ------------------------- * IV. querying ifconfig... eth0 Link encap:Ethernet HWaddr 00:1a:92:19:40:d7 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:44 Base address:0xa000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480 (480.0 B) TX bytes:480 (480.0 B) wlan0 Link encap:Ethernet HWaddr 00:18:de:c0:e6:3a inet addr:192.168.1.92 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::218:deff:fec0:e63a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:38836 errors:0 dropped:0 overruns:0 frame:0 TX packets:23475 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:55665088 (55.6 MB) TX bytes:2374662 (2.3 MB) ------------------------- * V. querying DHCP... Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service smbd reload Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the reload(8) utility, e.g. reload smbd RTNETLINK answers: File exists ------------------------- * VI. querying nslookup google.com... Server: 192.168.1.254 Address: 192.168.1.254#53 Non-authoritative answer: Name: google.com Address: 173.194.70.100 Name: google.com Address: 173.194.70.139 Name: google.com Address: 173.194.70.101 Name: google.com Address: 173.194.70.102 Name: google.com Address: 173.194.70.138 Name: google.com Address: 173.194.70.113

I should probably mention that right now, the signal is at ~40% and kinda-somewhat slow. Not enough for 720p YouTube videos.

by **Arnas** on Wed Nov 14, 2012 9:20 am

Don't know if it makes a difference, but it just increased to ~50% and I am watching a 720p video right now. Also did the mintWifi thing again:

Code: Select all: Namai2 arnas # sudo /usr/lib/linuxmint/mintWifi/mintWifi.py ------------------------- * I. scanning WIFI PCI devices... -- Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) ==> PCI ID = 8086:4222 (rev 02) ------------------------- * II. querying ndiswrapper... ------------------------- * III. querying iwconfig... lo no wireless extensions. wlan0 IEEE 802.11abg ESSID:"Namai" Mode:Managed Frequency:2.462 GHz Access Point: D4:D1:84:A8:C9:2B Bit Rate=24 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=35/70 Signal level=-75 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:6 Invalid misc:3638 Missed beacon:0 eth0 no wireless extensions. ------------------------- * IV. querying ifconfig... eth0 Link encap:Ethernet HWaddr 00:1a:92:19:40:d7 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:44 Base address:0xa000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480 (480.0 B) TX bytes:480 (480.0 B) wlan0 Link encap:Ethernet HWaddr 00:18:de:c0:e6:3a inet addr:192.168.1.92 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::218:deff:fec0:e63a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:103375 errors:0 dropped:0 overruns:0 frame:0 TX packets:59121 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:150742041 (150.7 MB) TX bytes:5643441 (5.6 MB) ------------------------- * V. querying DHCP... Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service smbd reload Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the reload(8) utility, e.g. reload smbd RTNETLINK answers: File exists ------------------------- * VI. querying nslookup google.com... Server: 192.168.1.254 Address: 192.168.1.254#53 Non-authoritative answer: Name: google.com Address: 173.194.70.101 Name: google.com Address: 173.194.70.100 Name: google.com Address: 173.194.70.138 Name: google.com Address: 173.194.70.139 Name: google.com Address: 173.194.70.102 Name: google.com Address: 173.194.70.113

by **Arnas** on Wed Nov 14, 2012 2:15 pm

I seem to have fixed the problem. I moved the router plug from the cord extender directly into the plug, and it works now.
I didn't take the fact that I upgraded the desktop a ~month ago and the power drain, obviously, increased.

Not for long though

I am taking it's a router issue, then? Because restarting it appeared to have worked. For some time, at least.

Hmmm. It's been working for the last ~2 hours perfectly fine. Perhaps that was a solution.
I'll continue using the same setup tomorrow and report back.

by **Arnas** on Sun Nov 18, 2012 2:39 pm

So here I am: confirming that it's not a router thing. A different laptop works.
Rebooting the router works, but for a limited time. That time varies highly, from a couple of minutes to a few hours. Sometimes it just slows down, sometimes it disconnects completely. The first one happens more often, though.
I am completely lost right now. This single problem is ruining the whole Mint experience for me: even though everything was perfect for a few months.

A reinstall perhaps?
Or if all else fails, switch back to Windows... Which would suck.

Anyone know something?

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