On 3.6.5 my rt2800usb adapter's speeds (measured downloading a file on
the my LAN with wget) dropped down to around 900 Kbyte/s from the usual
approx. 4 Mbyte/s. Also some packet loss and latency spikes. Nothing
unusual reported in dmesg.
Rebooting back into 3.6.4 with identical .config and the problem goes away.
So I reversed the following 4 patches introduced in 3.6.5:
Felix Fietkau:
mac80211: use ieee80211_free_txskb in a few more places
Johannes Berg:
mac80211: connect with HT20 if HT40 is not permitted
Stanislaw Gruszka:
mac80211: check if key has TKIP type before updating IV
cfg80211/mac80211: avoid state mishmash on deauth
rebuilt 3.6.5, rebooted into it, and speeds back to normal.
Sorry can't be more specific, didn't have enough time to revert each one
individually to find out which one caused the regression. Though if
anyone would really like me to find out let me know.
This is my rt2800usb device:
07d1:3c0a D-Link System DWA-140 RangeBooster N Adapter(rev.B2) [Ralink
RT3072]
It's a Compaq NC6400 laptop, 64 bit Gentoo, Intel Core2 cpu.
I double checked with md5 checksum and /lib/firmware/rt2870.bin was not
touched at all at any time, in case anyone suspected a firmware issue.
However, I am using the latest Ralink firmware [1] as opposed to the
firmware supplied in the kernel, which is necessary in order to achieve
N speeds unfortunately.
I'm just a user, just wanted to report it. Please be gentle :-)
Thanks!
[1] "Firmware RT28XX/RT30XX USB series (RT2870/RT2770/RT3572/RT3070)
from" ( RT2870_Firmware_V22.zip ) from
http://www.ralinktech.com/en/04_support/support.php?sn=501
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
