Re: ath wireless power management failure

[Ricardo Wurmus <rekado@elephly.net>]

Tiberiu <tiberiu@tehnoetic.com> writes:

> On 07.02.2017 18:03, Ricardo Wurmus wrote:
>> Tiberiu <tiberiu@tehnoetic.com> writes:
>>
>>> Do you also have ath9k log messages and if so, could you please paste
>>> them here? Also, what chip does your WiFi card have?
>>
>> There aren’t many ath9k log messages.  Here are the messages from
>> yesterday and today:
>>
>> Feb  6 00:35:57 localhost vmunix: [   11.849588] ath9k 0000:02:00.0: enabling device (0000 -> 0002)
>> Feb  6 00:35:57 localhost vmunix: [   12.052196] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  6 09:23:44 localhost vmunix: [   12.052555] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  6 16:41:02 localhost vmunix: [21782.562086] [<ffffffffc0687570>] ath_isr [ath9k]
>> Feb  6 16:48:04 localhost vmunix: [   67.024255] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  6 18:18:40 localhost vmunix: [ 5507.166605] [<ffffffffc02eb570>] ath_isr [ath9k]
>> Feb  6 18:25:22 localhost vmunix: [   25.190524] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  6 22:02:25 localhost vmunix: [   53.568402] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  7 07:49:13 localhost vmunix: [ 4619.392030] ath9k 0000:02:00.0: Refused to change power state, currently in D3
>> Feb  7 07:53:51 localhost vmunix: [   64.161516] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  7 08:39:19 localhost vmunix: [ 2787.166577] [<ffffffffc0557570>] ath_isr [ath9k]
>> Feb  7 08:50:07 localhost vmunix: [   18.319719] ath9k 0000:02:00.0: enabling device (0000 -> 0002)
>> Feb  7 08:50:07 localhost vmunix: [   18.652179] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>> Feb  7 11:55:49 localhost vmunix: [   69.031690] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
>>
>> lspci says this about my network controller:
>>
>> 02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
>>
>> It used to work fine for several months.  Not sure if it’s failing or if
>> there’s bad interaction with the kernel/libreboot.
>
> To make sure it's not a hardware problem, you could boot with a Live USB
> with Trisquel 7.0 (it has an older stable kernel) and see if you have
> stable WiFi. If not, maybe this is a good opportunity to upgrade to the
> best WiFi card compatible with fully free systems: Tehnoetic N450DB
> (a/b/g/n compliant, up to 450Mbps, Dual Band, 3-antenna connectors):
> https://tehnoetic.com/tet-n450db

I’m pretty sure now that it’s either a hardware problem or a weird
interaction of an older version of Libreboot with my failing hardware.
Can’t say for sure if it’s the mainboard giving up or just the WiFi card
(either is possible).  I’ll try updating Libreboot next and then move on
to buying a new WiFi card if that doesn’t help.

Thanks for the URL and the recommendation!

--
Ricardo

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