Comment 266 for bug 836250

Ben Hilburn (bhilburn) wrote :

I am running an up-to-date Ubuntu 13.04, and seeing this problem on my Lenovo T430s. Many of my coworkers have this same laptop, and we are all experiencing serious problems.

The card:

03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 3e)
 Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN

You can see the excessive retries bit here:

wlan0 IEEE 802.11abgn ESSID:"NI"
          Mode:Managed Frequency:2.462 GHz Access Point: CC:D5:39:BB:73:D0
          Bit Rate=65 Mb/s Tx-Power=15 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=46/70 Signal level=-64 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:2432 Invalid misc:96 Missed beacon:0

Kernel:

          Linux 3.8.0-27-generic #40-Ubuntu SMP Tue Jul 9 00:17:05 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Disappointing that this has been a bug for ~2 years - it's fairly serious.