The kernel still isn't public, but part of the issue appears to be my
router - Once a couple of failures have happened, i'm then unable to get
known 'good' configurations working.
Good:
3.11.0-12-generic using firmware:
[ 4679.763448] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build
25532 op_mode iwldvm
# iwconfig wlan0
wlan0 IEEE 802.11abgn ESSID:"Envy"
Mode:Managed Frequency:2.437 GHz Access Point: <mac>
Bit Rate=270 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=69/70 Signal level=-41 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1257 Invalid misc:90 Missed beacon:0
I'm getting transfer speeds > 3MB/s
I'll post bad after a reboot of both router and laptop in a couple of
hours.
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https://bugs.launchpad.net/bugs/1270208
Title:
linux-image-3.11.0-15-generic appears to regress connection speed for
iwlwifi
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