Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.13 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13-rc4 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1711062 Title: Atheros wireless AR9462 keeps disconnecting Status in linux package in Ubuntu: Incomplete Bug description: Identical experience to the description in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1361646 with the AR9285 although with a slightly different card. My impression is that the disconnects started with this upgrade, although it could have been slightly earlier due to the holidays: Linux 3.13.0-128-generic #177-Ubuntu SMP Tue Aug 8 11:40:23 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Description: Ubuntu 14.04.5 LTS Release: 14.04 [ 210.592223] ath: phy0: Chip reset failed [ 210.592225] ath: phy0: Unable to reset channel, reset status -22 [ 210.592234] ath: phy0: Unable to set channel [ 210.604144] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff [ 210.604154] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up [ 210.673418] ath: phy0: Failed to stop TX DMA, queues=0x18f! ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-128-generic 3.13.0-128.177 ProcVersionSignature: Ubuntu 3.13.0-128.177-generic 3.13.11-ckt39 Uname: Linux 3.13.0-128-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.25 Architecture: amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711062/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

