from #31, the wifi should work well on preload image 18.04+oem kernel 4.15(also refer to [1]), so it could be a regression on non-LTS Ubuntu. In this case, the crash could be caused by a kernel regression or some binary in linux-firmware.
On non-LTS Ubuntu, there are some ways can be tried. OEM kernel: - refer to this post [2], the machine is certified by OEM kernel, so OEM kernel is supposed to works well on device function. - https://bugs.launchpad.net/ubuntu/+source/linux-oem-osp1 - https://bugs.launchpad.net/ubuntu/+source/linux-oem mainline kernel: - the latest mainline kernel should already include most of the existed fix. - https://kernel.ubuntu.com/~kernel-ppa/mainline/ - a script to help you install it: https://github.com/fourdollars/scripts/blob/master/mainline-kernels.sh latest linux-firmware: - the one you are using looks already the latest one [3] most of device function failure is supposed to be fixed by the mainline kernel or OEM kernel, then it might take some time to land it to the generic kernel. BTW, I once test a 9380 by the way of [2], wifi worked well on the combination kernel linux-image-4.15.0-1045-oem + linux-firmware 1.173.9 (more detail about my system information [4]). Compare the dmesg to yours, the firmware of wifi module looks difference, it could be a clue. Mine : ath10k_pci 0000:02:00.0: firmware ver WLAN.RM.4.4.1-00079-QCARMSWPZ-1 api 6 features wowlan,ignore-otp crc32 fd869beb Yours : ath10k_pci 0000:02:00.0: firmware ver RM.4.4.1.c2-00057-QCARMSWP-1 api 6 features wowlan,ignore-otp,no-4addr-pad,raw-mode crc32 e061250a [1] https://certification.ubuntu.com/hardware/201810-26512/ [2] https://alex-tu-cc.github.io/2019/07/buy-a-certified-ubuntu-machine/ [3] https://qa.debian.org/madison.php?package=linux-firmware&table=ubuntu&a=&c=&s=# [4] https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1837683 -- 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/1818881 Title: ath10k_pci crashing Status in OEM Priority Project: Triaged Status in linux package in Ubuntu: Confirmed Bug description: The below happens on a regular basis on my DELL XPS 13 9380: [77451.338493] RIP: 0010:ath10k_htt_rx_pop_paddr.isra.29+0xd9/0xf0 [ath10k_core] [77451.338494] Code: 74 32 48 8b 87 10 02 00 00 48 85 c0 74 26 48 8b 40 28 48 85 c0 74 17 45 31 c0 b9 02 00 00 00 e8 dd c1 d7 db 48 89 d8 5b 5d c3 <0f> 0b 31 db 48 89 d8 5b 5d c3 48 8b 05 de 67 5a dc eb d1 0f 1f 40 [77451.338531] RSP: 0018:ffff9d996e503d78 EFLAGS: 00010246 [77451.338533] RAX: 0000000000000000 RBX: ffff9d97b7c12290 RCX: ffff9d96cbfd5528 [77451.338534] RDX: 0000000037af2804 RSI: ffff9d9944c51ed4 RDI: ffff9d9944c51de0 [77451.338535] RBP: ffff9d996e503d80 R08: 0000000000200000 R09: 0000000000000000 [77451.338537] R10: ffff9d94f045ecd8 R11: 00000000000001ff R12: ffff9d9944c51520 [77451.338538] R13: ffff9d996e503e40 R14: 0000000000000040 R15: ffff9d996e503e28 [77451.338540] FS: 0000000000000000(0000) GS:ffff9d996e500000(0000) knlGS:0000000000000000 [77451.338541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [77451.338542] CR2: 00001f1104c31000 CR3: 000000017aa0a005 CR4: 00000000003606e0 [77451.338543] Call Trace: [77451.338545] <IRQ> [77451.338557] ath10k_htt_txrx_compl_task+0x3d6/0xe40 [ath10k_core] [77451.338561] ? ath10k_pci_irq_msi_fw_unmask+0x70/0x70 [ath10k_pci] [77451.338563] ? ath10k_pci_wake.part.24+0xa0/0xa0 [ath10k_pci] [77451.338567] ath10k_pci_napi_poll+0x54/0x110 [ath10k_pci] [77451.338571] net_rx_action+0x140/0x3a0 [77451.338575] __do_softirq+0xe4/0x2d4 [77451.338580] irq_exit+0xc5/0xd0 [77451.338582] do_IRQ+0x8a/0xe0 [77451.338585] common_interrupt+0xf/0xf [77451.338586] </IRQ> [77451.338589] RIP: 0010:cpuidle_enter_state+0xa5/0x2c0 [77451.338590] Code: 8b 3d df bf 9d 63 e8 6a 09 89 ff 48 89 c3 0f 1f 44 00 00 31 ff e8 cb 14 89 ff 45 84 ff 0f 85 c8 01 00 00 fb 66 0f 1f 44 00 00 <48> 2b 5d d0 48 ba cf f7 53 e3 a5 9b c4 20 48 89 d8 48 c1 fb 3f 48 [77451.338621] RSP: 0018:ffffaf4601993e50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffde [77451.338623] RAX: ffff9d996e522c40 RBX: 000046710b80e2b6 RCX: 000000000000001f [77451.338624] RDX: 000046710b80e2b6 RSI: 000000004041cc98 RDI: 0000000000000000 [77451.338625] RBP: ffffaf4601993e90 R08: 0000000000000002 R09: 00000000000224c0 [77451.338626] R10: ffffaf4601993e20 R11: 00000000000000d9 R12: 0000000000000004 [77451.338626] R13: ffff9d996e52ce00 R14: ffffffff9d3849f8 R15: 0000000000000000 [77451.338630] cpuidle_enter+0x17/0x20 [77451.338632] call_cpuidle+0x23/0x40 [77451.338634] do_idle+0x204/0x280 [77451.338636] cpu_startup_entry+0x73/0x80 [77451.338639] start_secondary+0x1ab/0x200 [77451.338642] secondary_startup_64+0xa5/0xb0 [77451.338643] ---[ end trace 22914e3b3a848f81 ]--- [77451.338655] ath10k_pci 0000:02:00.0: failed to pop paddr list: -2 $ uname -a Linux perseus 4.18.0-15-generic #16~18.04.1-Ubuntu SMP Thu Feb 7 14:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux $ modinfo ath10k_pci filename: /lib/modules/4.18.0-15-generic/kernel/drivers/net/wireless/ath/ath10k/ath10k_pci.ko firmware: ath10k/QCA9377/hw1.0/board.bin firmware: ath10k/QCA9377/hw1.0/firmware-5.bin firmware: ath10k/QCA9377/hw1.0/firmware-6.bin firmware: ath10k/QCA6174/hw3.0/board-2.bin firmware: ath10k/QCA6174/hw3.0/board.bin firmware: ath10k/QCA6174/hw3.0/firmware-6.bin firmware: ath10k/QCA6174/hw3.0/firmware-5.bin firmware: ath10k/QCA6174/hw3.0/firmware-4.bin firmware: ath10k/QCA6174/hw2.1/board-2.bin firmware: ath10k/QCA6174/hw2.1/board.bin firmware: ath10k/QCA6174/hw2.1/firmware-5.bin firmware: ath10k/QCA6174/hw2.1/firmware-4.bin firmware: ath10k/QCA9887/hw1.0/board-2.bin firmware: ath10k/QCA9887/hw1.0/board.bin firmware: ath10k/QCA9887/hw1.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/board-2.bin firmware: ath10k/QCA988X/hw2.0/board.bin firmware: ath10k/QCA988X/hw2.0/firmware-5.bin firmware: ath10k/QCA988X/hw2.0/firmware-4.bin firmware: ath10k/QCA988X/hw2.0/firmware-3.bin firmware: ath10k/QCA988X/hw2.0/firmware-2.bin license: Dual BSD/GPL description: Driver support for Qualcomm Atheros 802.11ac WLAN PCIe/AHB devices author: Qualcomm Atheros srcversion: D49EBAB0107B6CE28383BB8 alias: pci:v0000168Cd00000050sv*sd*bc*sc*i* alias: pci:v0000168Cd00000042sv*sd*bc*sc*i* alias: pci:v0000168Cd00000046sv*sd*bc*sc*i* alias: pci:v0000168Cd00000056sv*sd*bc*sc*i* alias: pci:v0000168Cd00000040sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Esv*sd*bc*sc*i* alias: pci:v0000168Cd00000041sv*sd*bc*sc*i* alias: pci:v0000168Cd0000003Csv*sd*bc*sc*i* alias: pci:v00000777d000011ACsv*sd*bc*sc*i* depends: ath10k_core retpoline: Y intree: Y name: ath10k_pci vermagic: 4.18.0-15-generic SMP mod_unload signat: PKCS#7 signer: sig_key: sig_hashalgo: md4 parm: irq_mode:0: auto, 1: legacy, 2: msi (default: 0) (uint) parm: reset_mode:0: auto, 1: warm only (default: 0) (uint) $ lspci | grep -i atheros 02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) I've updated the firmware manually as a first step trying to resolve the issue per https://www.dell.com/community/Linux-Developer-Systems/XPS-13-9370-ath10k-pci-firmware-crash/td-p/6114945 I'm not sure whether this is related to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730331 but it doesn't seem to have been resolved. As a side-note, seems as if linux-firmware doesn't ship the latest for the QCA6174. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: stephan 2978 F.... pulseaudio /dev/snd/controlC2: stephan 2978 F.... pulseaudio /dev/snd/controlC1: stephan 2978 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=75c252d4-dee6-4b0f-9ed2-0ac33d36b273 InstallationDate: Installed on 2019-02-04 (29 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Dell Inc. XPS 13 9380 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-15-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20 RelatedPackageVersions: linux-restricted-modules-4.18.0-15-generic N/A linux-backports-modules-4.18.0-15-generic N/A linux-firmware 1.173.3 Tags: bionic Uname: Linux 4.18.0-15-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev root sambashare sudo _MarkForUpload: True dmi.bios.date: 01/08/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.1 dmi.board.name: 0KTW76 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.1.1:bd01/08/2019:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9380 dmi.product.sku: 08AF dmi.sys.vendor: Dell Inc. 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