Comment 2 for bug 378156

I can comfirm this bug on a Acer Extensa 5430-5855. Atheros Communications Inc. AR928X Wireless Network Adapter .Connection drops often. Large file transfers from bit torrent or scp can force this condition. Started out default. Network Manager wouldn't reconnect on it's own. Tried jaunty-backports no effect. Tried Wicd. still dropping connections but will reconnect on it's own more often. Also tried compile compat-wireless stable module no effect. Tried compiling bleeding edge driver but error in the source code so stopped. Tried bluetooth coexistence to no effect. Disabled bluetooth to no effect. Also it is noteworthy that the bitrate in iwconfig for wlan0 is Bit Rate=0 kb/s. I had that issue with a broadcom driver a few distros back and the results were similiar to this.

All worked fine in hardy never had an issue on the same hardware. Only good thing i can say is when connected scp speeds are 5MB/s where in hardy they were 2.5MB/s.

Router Linksys wrt160n DD-WRT v24-sp1 (07/27/08) vpn
(SVN revision 10011)
This is current but i have tried multiple versions including the stock firmware to rule this out.
Settings mixed mode. WPA2 but again I have tried g only, n only, and WPA . all have issues.

uname -r
2.6.28-11-generic ** running this one clean install but have tested all below kernels problem persists
uname -r
2.6.28-12-generic
uname -r
2.6.28-11-server
uname -r
2.6.28-12-server

lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:01.0 PCI bridge: Acer Incorporated [ALI] Device 9602
00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1)
00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2)
00:07.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 3)
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 11h HyperTransport Configuration (rev 40)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 11h Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 11h DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 11h Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 11h Link Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics]
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
03:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5764M Gigabit Ethernet PCIe (rev 10)
06:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)
0c:06.0 CardBus bridge: O2 Micro, Inc. Cardbus bridge (rev 01)
0c:06.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller (rev 02)
0c:06.3 Mass storage controller: O2 Micro, Inc. Integrated MS/xD Controller (rev 03)

iwconfig
wlan0 IEEE 802.11bgn ESSID:"Abyss"
          Mode:Managed Frequency:2.437 GHz Access Point: 00:21:29:9B:B1:6D
          Bit Rate=0 kb/s Tx-Power=20 dBm
          Retry min limit:7 RTS thr:off Fragment thr=2352 B
          Power Management:off
          Link Quality=58/70 Signal level=-52 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

dmesg | grep ath9k
[ 11.545108] ath9k 0000:06:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 11.545123] ath9k 0000:06:00.0: setting latency timer to 64
[ 11.976667] phy0: Selected rate control algorithm 'ath9k_rate_control'
[ 12.206366] Registered led device: ath9k-phy0::radio
[ 12.206416] Registered led device: ath9k-phy0::assoc
[ 12.206455] Registered led device: ath9k-phy0::tx
[ 12.206525] Registered led device: ath9k-phy0::rx

dmesg | grep wlan0
[ 18.164990] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 86.381267] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 87.861557] wlan0: authenticate with AP f603e6b8
[ 87.861595] wlan0: privacy configuration mismatch and mixed-cell disabled - disassociate
[ 87.863840] wlan0: authenticated
[ 87.863848] wlan0: associate with AP f603e6b8
[ 87.863857] wlan0: mismatch in privacy configuration and mixed-cell disabled - abort association
[ 88.064050] wlan0: privacy configuration mismatch and mixed-cell disabled - disassociate
[ 91.727423] wlan0: authenticate with AP f603e6b8
[ 91.731496] wlan0: authenticated
[ 91.731505] wlan0: associate with AP f603e6b8
[ 91.735807] wlan0: RX AssocResp from f5d4e02a (capab=0x411 status=0 aid=1)
[ 91.735814] wlan0: associated
[ 91.747029] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 102.661032] wlan0: no IPv6 routers present
[17094.724157] wlan0: deauthenticating by local choice (reason=3)
[17094.773256] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[17095.394721] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[17095.627670] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[17096.844805] wlan0: authenticate with AP f603e6b8
[17096.847015] wlan0: authenticated
[17096.847020] wlan0: associate with AP f603e6b8
[17096.851088] wlan0: RX AssocResp from f5a1802a (capab=0x411 status=0 aid=1)
[17096.851097] wlan0: associated
[17096.862128] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[17106.881021] wlan0: no IPv6 routers present
[18190.900548] wlan0: deauthenticating by local choice (reason=3)
[18190.959405] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[18195.169583] wlan0: authenticate with AP f603e6b8
[18195.171817] wlan0: authenticated
[18195.171823] wlan0: associate with AP f603e6b8
[18195.175884] wlan0: RX AssocResp from f5e8602a (capab=0x411 status=0 aid=1)
[18195.175891] wlan0: associated
[18195.187180] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[18195.998689] wlan0: deauthenticating by local choice (reason=3)
[18196.133261] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[18196.266820] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[18197.489593] wlan0: authenticate with AP f603e6b8
[18197.492630] wlan0: authenticated
[18197.492636] wlan0: associate with AP f603e6b8
[18197.496720] wlan0: RX AssocResp from f615402a (capab=0x411 status=0 aid=1)
[18197.496729] wlan0: associated
[18197.507911] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[18208.188033] wlan0: no IPv6 routers present
[19118.238355] wlan0: deauthenticated (Reason: 7)
[19119.237044] wlan0: direct probe to AP f603e6b8 try 1
[19119.437287] wlan0: direct probe to AP f603e6b8 try 2
[19119.440491] wlan0 direct probe responded
[19119.440497] wlan0: authenticate with AP f603e6b8
[19119.445266] wlan0: authenticated
[19119.445271] wlan0: associate with AP f603e6b8
[19119.449762] wlan0: RX ReassocResp from f2fcc02a (capab=0x411 status=0 aid=1)
[19119.449771] wlan0: associated
[37990.734140] wlan0: deauthenticating by local choice (reason=3)
[37990.784128] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[37991.809265] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[37992.020255] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[37993.268396] wlan0: authenticate with AP f603e6b8
[37993.270634] wlan0: authenticated
[37993.270639] wlan0: associate with AP f603e6b8
[37993.274765] wlan0: RX AssocResp from f5c1c02a (capab=0x411 status=0 aid=1)
[37993.274773] wlan0: associated
[37993.286011] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[38003.508031] wlan0: no IPv6 routers present
[41729.168190] wlan0: deauthenticating by local choice (reason=3)
[41729.223425] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[41730.117314] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[41730.254472] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[41731.490263] wlan0: authenticate with AP f603e6b8
[41731.494385] wlan0: authenticated
[41731.494394] wlan0: associate with AP f603e6b8
[41731.499438] wlan0: RX AssocResp from f5df602a (capab=0x411 status=0 aid=1)
[41731.499446] wlan0: associated
[41731.510316] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[41742.221033] wlan0: no IPv6 routers present