I am seeing what appears to be a similar/related issue on Ubuntu 26.04 LTS with an Intel AX201 adapter. System: - Ubuntu 26.04 LTS (resolute) - Kernel: 7.0.0-22-generic - Laptop: ASUS TUF Gaming F15 FX507ZC_FX507ZC - BIOS: FX507ZC.315, dated 2022-06-17 - Wi-Fi: Intel Alder Lake-P PCH CNVi WiFi [8086:51f0] rev 01 - Subsystem: Intel AX201 160MHz [8086:0074] - Firmware loaded: 89.123cf747.0 so-a0-hr-b0-89.ucode - linux-firmware: 20260319.git217ca6e4.1ubuntu Impact: Wi-Fi disappears/becomes unusable after iwlwifi firmware crashes. After the failure, lspci still shows the device and the iwlwifi/iwlmvm/mac80211/cfg80211 modules are loaded, but no wireless interface exists: - `iw dev` shows no wireless interfaces - `nmcli device status` shows only ethernet and loopback - `rfkill list all` shows Bluetooth only, no Wi-Fi device Relevant dmesg excerpts: iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0. iwlwifi 0000:00:14.3: Loaded firmware version: 89.123cf747.0 so-a0-hr-b0-89.ucode iwlwifi 0000:00:14.3: 0x00000034 | NMI_INTERRUPT_WDG iwlwifi 0000:00:14.3: 0x20000070 | NMI_INTERRUPT_LMAC_FATAL iwlwifi 0000:00:14.3: Failed to start RT ucode: -110 iwlwifi 0000:00:14.3: Failed to run INIT ucode: -110 iwlwifi 0000:00:14.3: Device error - reprobe! Hardware became unavailable during restart. WARNING: net/mac80211/util.c:1877 at ieee80211_reconfig+0x11e/0x1620 [mac80211], CPU#4: kworker/4:1/206 Timeline from one boot: - 2026-06-13 22:26:32: firmware 89.123cf747.0 so-a0-hr-b0-89.ucode loaded - 2026-06-13 22:26:32: NMI_INTERRUPT_WDG / NMI_INTERRUPT_LMAC_FATAL - 2026-06-13 22:26:32: Failed to start RT ucode: -110 - 2026-06-13 22:26:34: Failed to run INIT ucode: -110 - 2026-06-13 22:30:52: Microcode SW error detected. Restarting 0x0. - 2026-06-13 22:38:16: repeated Microcode SW error, followed by Device error - reprobe! - 2026-06-13 22:39:40: Hardware became unavailable during restart / ieee80211_reconfig warning - 2026-06-13 22:41:23: another Microcode SW error followed by reprobe and failed RT/INIT ucode starts This looks related because the hardware is Intel AX201 / Alder Lake-P CNVi and the failure mode is iwlwifi losing the device/interface after firmware restart. I can provide full dmesg, journalctl -k, NetworkManager logs, lspci -vvnn, and package versions if useful. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2121693 Title: iwlwifi drivers make network unavailable after some time Status in linux package in Ubuntu: Triaged Status in linux source package in Noble: Triaged Status in linux source package in Plucky: Won't Fix Bug description: Using an ACER Laptop here unddddddder Ubuntu 25.04, behavior was the same under 24.10 and 24.04 : System Information Manufacturer: Acer Product Name: Aspire A515-57 Version: V1.30 WiFi card is : 0000:00:14.3 Network controller: Intel Corporation Alder Lake-P PCH CNVi WiFi (rev 01) Subsystem: Intel Corporation Dual Band Wi-Fi 6(802.11ax) AX201 160MHz 2x2 [Harrison Peak] Flags: bus master, fast devsel, latency 0, IRQ 16, IOMMU group 9 Memory at 601f274000 (64-bit, non-prefetchable) [size=16K] Capabilities: [c8] Power Management version 3 Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [40] Express Root Complex Integrated Endpoint, IntMsgNum 0 Capabilities: [80] MSI-X: Enable+ Count=16 Masked- Capabilities: [100] Latency Tolerance Reporting Capabilities: [164] Vendor Specific Information: ID=0010 Rev=0 Len=014 <?> Kernel driver in use: iwlwifi Kernel modules: iwlwifi When using WiFi connected to a 5GHz access point, within a random time though mins to hours depending on the traffic usage on the card, the iwlwifi driver can get unusable leading to impossibility to use WiFi on the PC, only way to solve the problem after crash is to shutdown totally the laptop and cold boot to recover a usable connection. Attached are the logs found under dmesg which show when the problem occurs. Found a way to avoid the problem to occurs but it leads to have an almost unusable WiFi as the transfer rate is limited to 15~16Mbits/sec ... by adding options iwlwifi 11n_disable=1 to /etc/modprobe.d/iwlwifi.conf there is no crash anymore but it renders the laptop very laggy on some situations... I have a double boot with Windows 11 on this laptop and can confirm that I have no problem even with heavy speed usage under Windows, never had annny crash related to WiFi under Windows, but sorry Windows is not a solution for me :) Others tests I've done : - tried with different Live USB : Fedora / Ubuntu / Mint : all failed so the problem could be related to a common issue with wilwifi drivers under Linux ? - tried to change some settings at the access point's side : Mercusys HALO H80X which is 3 nodes Wifi 6 AX3000 Mesh but didn't find any setting which permit to solve the problem. I do not have access to another Access Point to test if this could be the culprit ... - some more configurations under /etc/modprobe.d/iwlwifi.conf ( I will output them below in a separate attachment). Available and at your disposal to give some more informations and/or debug more if you need some more tests. Thanks a lot for reading ! :) ------------------------------------------------------- ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: linux-image-generic 6.14.0-29.29 ProcVersionSignature: Ubuntu 6.14.0-29.29-generic 6.14.8 Uname: Linux 6.14.0-29-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lolomin 2090 F.... pipewire lolomin 2093 F.... wireplumber /dev/snd/seq: lolomin 2090 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: X-Cinnamon Date: Fri Aug 29 16:40:09 2025 InstallationDate: Installed on 2024-07-05 (420 days ago) InstallationMedia: Ubuntu-Cinnamon 24.04 LTS "Noble Numbat" - Release amd64 (20240425) MachineType: Acer Aspire A515-57 ProcEnviron: LANG=fr_FR.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-29-generic root=UUID=3b1ab1f5-3c43-4750-a198-2f3128d73147 ro security=selinux quiet splash pcie_port_pm=off pcie_aspm.policy=performance vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.14.0-29-generic N/A linux-backports-modules-6.14.0-29-generic N/A linux-firmware 20250317.git1d4c88ee-0ubuntu1.5 SourcePackage: linux UpgradeStatus: Upgraded to plucky on 2025-04-29 (122 days ago) dmi.bios.date: 01/13/2025 dmi.bios.release: 1.30 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.30 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: Ganymede_ADU dmi.board.vendor: ADL dmi.board.version: V1.30 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.30 dmi.ec.firmware.release: 1.29 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.30:bd01/13/2025:br1.30:efr1.29:svnAcer:pnAspireA515-57:pvrV1.30:rvnADL:rnGanymede_ADU:rvrV1.30:cvnAcer:ct10:cvrV1.30:sku0000000000000000: dmi.product.family: Aspire 5 dmi.product.name: Aspire A515-57 dmi.product.sku: 0000000000000000 dmi.product.version: V1.30 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2121693/+subscriptions
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