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adrianbs

Member

From: Uruguay

Registered: 2009-08-13

Posts: 31

ath9k random connection drops

Hi all,

I have an Asus UL80 with an Atheros AR9285 wireless network card. I have managed to get all working but my wireless card has always have problems.

I have trying wicd and netcfg with same results.

When connection drops in dmesg I get

[  923.259827] ath: Failed to wakeup in 500us
[  923.327855] ath: Failed to stop TX DMA!
[  923.341076] ath: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
[  923.341084] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up
[  923.458547] ath: Chip reset failed
[  923.458554] ath: Unable to reset channel (2417 MHz), reset status -22
[  923.592844] ath: Failed to wakeup in 500us
[  923.710545] ath: Chip reset failed
[  923.710554] ath: Unable to reset hardware; reset status -22 (freq 2417 MHz)
[  923.764316] atl1c 0000:04:00.0: irq 47 for MSI/MSI-X
[  923.821310] ADDRCONF(NETDEV_UP): eth0: link is not ready
[  927.052362] ath: Failed to wakeup in 500us
[  927.171392] ath: Chip reset failed
[  927.171401] ath: Unable to reset hardware; reset status -22 (freq 2417 MHz)
[  932.046727] ath: Failed to wakeup in 500us
[  932.165859] ath: Chip reset failed
[  932.165870] ath: Unable to reset hardware; reset status -22 (freq 2417 MHz)

I have tried different things that supposed to work for some users, but I can't get a solution. Those solutions include:

* blacklisted eth module
* when I get the drop I have tried:

rc.d stop wicd
iwconfig wlan0 power off
iwconfig wlan0 power on
rc.d start wicd

* also I've added nohwcrypt=1 to ath9k module

I have a new Intel wireless card to replace the Atheros one, but the card is not simple accessible and the laptop is somewhat difficult to disassemble completely.

Any suggestions would be really appreciated since I have to reboot the machine frecuenly, and I have been with this issue for several months.

Gusar

Member

Registered: 2009-08-25

Posts: 3,607

Re: ath9k random connection drops

Searching around a bit, this seems to be an old issue that pops up every now and then, not related to the recent ath9k bugs. The only thing that comes to mind is try the latest wireless-compat.

It kinda seems like a power management issue. Try "iwconfig wlan0 power off"

Last edited by Gusar (2012-02-13 16:50:52)

adrianbs

Member

From: Uruguay

Registered: 2009-08-13

Posts: 31

Re: ath9k random connection drops

It kinda seems like a power management issue. Try "iwconfig wlan0 power off"

I have it in /etc/rc.local, and doesn't resolve the problem.