2009-06-01 20:43:09

by Maxim Levitsky

[permalink] [raw]
Subject: Pending ath5k bugs

Hi,

Just like ath9k thread, here is the list of bugs, I have seen on my
aspire one (with ath5k).

This is an AR2425 device.


#1) - Data transfer often stalls, sometimes for few seconds, sometimes
for much longer periods.

Transfer rate doesn't affect this, nether does network load (happens
much more often when it is high, but also happens, while it is medium to
low).

I observed that, resetting the phy by triggering a scan, sometimes help,
although running the scan inside a 2 second per iteration loop, doesn't
prevent this stall to occur.

Also encryption doesn't play any role in this, I have seen same
scenario on open network configuration as well.


#2) - Driver sometimes doesn't wake the device up, after resume from
ram/disk. It happens not much often, but when it does, only a power
cycle (reboot or poweroff) helps to recover the device, and nether s2ram
nor s2disk do anything.



#3) Ath5k often panics the kernel when it is in ibss/ap mode. This
reported to be fixed, but I use latest wireless-testing (less that 3 day
old, on average)


#4) Ath5k doesn't send beacons, when hostapd is run for the first time.


#5) Can't send any frames between AP (ath5k) and a client.
But If I create a second monitor iface (in addition to the one hostapd
have created) I do see the frames from client on AP.


I especially hate bug #1, and would be happy to see bug #2 fixed.
I don't use AP mode much yet, but it would be nice if it were in working
state.



Best regards,
Maxim Levitsky



2009-06-01 21:48:36

by Tim Hawkins

[permalink] [raw]
Subject: Re: Pending ath5k bugs

I can confirm 1 & 2, i have the same problems on my aspire one.

Also wrt: 1

The reported signal strength is much lower than running say madwifi on
the same hardware/os.

On 1 Jun 2009, at 21:43, Maxim Levitsky wrote:

> Hi,
>
> Just like ath9k thread, here is the list of bugs, I have seen on my
> aspire one (with ath5k).
>
> This is an AR2425 device.
>
>
> #1) - Data transfer often stalls, sometimes for few seconds, sometimes
> for much longer periods.
>
> Transfer rate doesn't affect this, nether does network load (happens
> much more often when it is high, but also happens, while it is
> medium to
> low).
>
> I observed that, resetting the phy by triggering a scan, sometimes
> help,
> although running the scan inside a 2 second per iteration loop,
> doesn't
> prevent this stall to occur.
>
> Also encryption doesn't play any role in this, I have seen same
> scenario on open network configuration as well.
>
>
> #2) - Driver sometimes doesn't wake the device up, after resume from
> ram/disk. It happens not much often, but when it does, only a power
> cycle (reboot or poweroff) helps to recover the device, and nether
> s2ram
> nor s2disk do anything.
>
>
>
> #3) Ath5k often panics the kernel when it is in ibss/ap mode. This
> reported to be fixed, but I use latest wireless-testing (less that 3
> day
> old, on average)
>
>
> #4) Ath5k doesn't send beacons, when hostapd is run for the first
> time.
>
>
> #5) Can't send any frames between AP (ath5k) and a client.
> But If I create a second monitor iface (in addition to the one hostapd
> have created) I do see the frames from client on AP.
>
>
> I especially hate bug #1, and would be happy to see bug #2 fixed.
> I don't use AP mode much yet, but it would be nice if it were in
> working
> state.
>
>
>
> Best regards,
> Maxim Levitsky
>
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