From mboxrd@z Thu Jan 1 00:00:00 1970 From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=) Subject: Re: ath wireless power management failure Date: Tue, 07 Feb 2017 15:46:25 +0100 Message-ID: <87y3xi9hz2.fsf@gnu.org> References: <87h9461ko4.fsf@elephly.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:50195) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cb72P-0002rA-71 for help-guix@gnu.org; Tue, 07 Feb 2017 09:46:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cb72L-00008u-8z for help-guix@gnu.org; Tue, 07 Feb 2017 09:46:33 -0500 In-Reply-To: <87h9461ko4.fsf@elephly.net> (Ricardo Wurmus's message of "Sun 05 Feb 2017 04:43:26 AM CET") List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+gcggh-help-guix=m.gmane.org@gnu.org Sender: "Help-Guix" To: Ricardo Wurmus Cc: help-guix Hello! Ricardo Wurmus skribis: > The error messages that appear in the log look like this: > > [ 1210.998408] ath: phy0: Unable to reset channel, reset status -22 > [ 1211.078027] ath: phy0: DMA failed to stop in 10 ms AR_CR=3D0xffffffff = AR_DIAG_SW=3D0xffffffff DMADBG_7=3D0xffffffff > [ 1211.078038] ath: phy0: Could not stop RX, we could be confusing the DM= A engine when we start RX up > > (Repeat ad infinitum.) I see some of these in /var/log/messages (using Linux-libre 4.9, on a UEFI laptop) but it=E2=80=99s only a couple of times, after which things get reinitialized: --8<---------------cut here---------------start------------->8--- [ 4880.470147] ath: phy2: Unable to reset channel (2437 Mhz) reset status -= 22 [ 4880.470149] ath: phy2: Unable to set channel [ 4880.480214] ath: phy2: Failed to wakeup in 500us [ 4880.490224] ath: phy2: Failed to wakeup in 500us [...] [ 4880.670796] usb 1-2: ath9k_htc: USB layer deinitialized [ 4881.414783] usb 1-2: new high-speed USB device number 13 using xhci_hcd [ 4881.631641] usb 1-2: New USB device found, idVendor=3D0cf3, idProduct=3D= 9271 [ 4881.631643] usb 1-2: New USB device strings: Mfr=3D16, Product=3D32, Ser= ialNumber=3D48 [ 4881.631644] usb 1-2: Product: UB93 [ 4881.631645] usb 1-2: Manufacturer: ATHEROS [ 4881.631646] usb 1-2: SerialNumber: 12345 [ 4881.632165] usb 1-2: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw req= uested [ 4881.632281] usb 1-2: Direct firmware load for ath9k_htc/htc_9271-1.4.0.f= w failed with error -2 [ 4881.632284] usb 1-2: ath9k_htc: Firmware htc_9271.fw requested ]: Deleting interface #7 wlp0s20f0u2, fe80::6202:b4ff:fe99:9b31%5#123, inte= rface stats: received=3D0, sent=3D0, dropped=3D0, active_time=3D8 secs [ 4881.919163] usb 1-2: ath9k_htc: Transferred FW: htc_9271.fw, size: 51008 [ 4882.171184] ath9k_htc 1-2:1.0: ath9k_htc: HTC initialized with 33 credits [ 4882.440251] ath9k_htc 1-2:1.0: ath9k_htc: FW Version: 1.4 [ 4882.440254] ath9k_htc 1-2:1.0: FW RMW support: On [ 4882.444769] ieee80211 phy3: Atheros AR9271 Rev:1 [ 4882.444890] ath9k_htc 1-2:1.0 wlp0s20f0u2: renamed from wlan0 --8<---------------cut here---------------end--------------->8--- So I don=E2=80=99t know what=E2=80=99s happening in your case. It=E2=80=99= s a good idea to try with a different WiFi card or dongle if you have one. Ludo=E2=80=99.