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Old 03-02-2013, 10:13 AM   #1
pestka
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Post Wifi disconnects fedora 18


Hi everybody!

I've been playing with the latest release of Fedora18 recently and here's what happens: wifi gets disconnected randomly and I can't do nothing about it.

This is what I get from logs:

Code:
Feb 24 18:54:04 skylark kernel: [10138.344027] ath: phy0: Failed to wakeup in 500us
Feb 24 18:54:04 skylark kernel: [10138.363072] ath: phy0: Failed to wakeup in 500us
Feb 24 18:54:05 skylark kernel: [10138.554820] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Feb 24 18:54:05 skylark kernel: [10138.554860] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up
Feb 24 18:54:05 skylark kernel: [10138.617200] ath: phy0: Failed to stop TX DMA, queues=0x10f!
Feb 24 18:54:05 skylark kernel: [10138.729272] ath: phy0: Chip reset failed
Feb 24 18:54:05 skylark kernel: [10138.729277] ath: phy0: Unable to reset channel, reset status -22
Feb 24 18:54:06 skylark kernel: [10140.222172] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Feb 24 18:54:06 skylark kernel: [10140.222183] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up
Feb 24 18:54:06 skylark kernel: [10140.284498] ath: phy0: Failed to stop TX DMA, queues=0x10f!
Feb 24 18:54:06 skylark kernel: [10140.396500] ath: phy0: Chip reset failed
Feb 24 18:54:06 skylark kernel: [10140.396505] ath: phy0: Unable to reset channel, reset status -22
Feb 24 18:54:06 skylark kernel: [10140.396521] ath: phy0: Unable to set channel
Feb 24 18:54:06 skylark NetworkManager[715]: <info> (wlan0): supplicant interface state: completed -> disconnected
In such a case I always have to reboot, I can not stop the network nor do anything. Any clues anyone?
 
Old 03-07-2013, 10:56 PM   #2
Ztcoracat
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Hi:

pestka

Are you running Fedora on a Desktop (or) a laptop?
Is your computer a Dell? Toshiba? Sony? Mac? or a Lenovo? Do clarify:-

It's possible that you made just need a driver for your network interface card.

Is this an older computer?

Last edited by Ztcoracat; 03-07-2013 at 10:58 PM.
 
Old 03-15-2013, 03:55 PM   #3
pestka
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Post

Hello,

I am running Fedora on a laptop. It is Acer Aspire ONE 756-987BCkk.
It is a pretty new computer, although a budget one as I don't need anything fancy on my Desktop, just a transparent terminal and my favourite tools.

Maybe it's worth mentioning. Please take a look below at my network card specification; perhaps it will trigger something...

03:00.0 Network controller: Atheros Communications Inc. AR9485 Wireless Network Adapter (rev 01)

lsmod:
ath9k 134913 0
ath9k_common 13432 1 ath9k
ath9k_hw 393666 2 ath9k_common,ath9k
ath 18606 3 ath9k_common,ath9k,ath9k_hw
mac80211 499595 1 ath9k
of_i2c 12907 1 i2c_i801
joydev 17097 0
cfg80211 425812 3 ath,ath9k,mac80211
 
Old 03-16-2013, 10:30 PM   #4
Ztcoracat
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Went to make sure that you have the right driver and you do-
The ath9kis the right one
http://linuxwireless.org/en/users/Drivers/ath9k

Wonder if because developers are still woring on the ath9k if that why your connection keeps dropping!?
Quote:
wireless-testing: through the 802.11 development git tree used by developers working on ath9k
Was there by any chance additional lines of information to the output of the lsmodcmd? Generally running that cmd provides a synopsis and shows what modules are currently loaded.
The output seems short-

Quote:
Whenever this happens my wireless connection dies and nothing short of a reboot will bring it back online.
http://forums.fedoraforum.org/showthread.php?t=252913

Looking for more information to help you...

Last edited by Ztcoracat; 03-17-2013 at 01:16 AM. Reason: Additional question about modules
 
Old 03-17-2013, 01:18 AM   #5
Ztcoracat
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Try running:
Code:
lspci -vv
Do you see in that output where it says:
Code:
kernel driver in use (# and description)
 
  


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