I believe I also have this bug on a HP Envy 13-ab002na. It is a vanilla 17.10 install.
As with @bwduncan the laptop becomes completely unresponsive to any inputs and needs hard power off. The last thing in /var/log/kern.log is iwlwifi Microcode SW error detected. It has happened 3 times in the last 30 min. It had previously been less frequent and mostly only when the machine was sleeping. If I disable WiFi and tether to my phone (via USB) I have not yet experienced such a lockup. I installed 17.10 from new with this laptop so cannot say whether it is 17.10 specific (previously had a ThinkPad; seems I had a narrow escape with the BIOS write bit!). [...] Hardware name: HP HP ENVY Notebook 13-ab0XX/82B9, BIOS F.04 09/29/2016 [...] Dec 30 21:35:56 schramm kernel: [ 1364.091405] iwlwifi 0000:01:00.0: Microcode SW error detected. Restarting 0x82000000. Dec 30 21:35:56 schramm kernel: [ 1364.091570] iwlwifi 0000:01:00.0: Start IWL Error Log Dump: Dec 30 21:35:56 schramm kernel: [ 1364.091577] iwlwifi 0000:01:00.0: Status: 0x00000200, count: 6 Dec 30 21:35:56 schramm kernel: [ 1364.091583] iwlwifi 0000:01:00.0: Loaded firmware version: 29.610311.0 Dec 30 21:35:56 schramm kernel: [ 1364.091589] iwlwifi 0000:01:00.0: 0x00000038 | BAD_COMMAND Dec 30 21:35:56 schramm kernel: [ 1364.091594] iwlwifi 0000:01:00.0: 0x00000220 | trm_hw_status0 Dec 30 21:35:56 schramm kernel: [ 1364.091599] iwlwifi 0000:01:00.0: 0x00000000 | trm_hw_status1 Dec 30 21:35:56 schramm kernel: [ 1364.091603] iwlwifi 0000:01:00.0: 0x00043D58 | branchlink2 Dec 30 21:35:56 schramm kernel: [ 1364.091608] iwlwifi 0000:01:00.0: 0x0004B016 | interruptlink1 Dec 30 21:35:56 schramm kernel: [ 1364.091612] iwlwifi 0000:01:00.0: 0x00000000 | interruptlink2 Dec 30 21:35:56 schramm kernel: [ 1364.091617] iwlwifi 0000:01:00.0: 0x0072001C | data1 Dec 30 21:35:56 schramm kernel: [ 1364.091621] iwlwifi 0000:01:00.0: 0x00000573 | data2 Dec 30 21:35:56 schramm kernel: [ 1364.091625] iwlwifi 0000:01:00.0: 0x00000073 | data3 Dec 30 21:35:56 schramm kernel: [ 1364.091630] iwlwifi 0000:01:00.0: 0xD4817170 | beacon time Dec 30 21:35:56 schramm kernel: [ 1364.091634] iwlwifi 0000:01:00.0: 0x6C4BEE92 | tsf low Dec 30 21:35:56 schramm kernel: [ 1364.091638] iwlwifi 0000:01:00.0: 0x00000090 | tsf hi Dec 30 21:35:56 schramm kernel: [ 1364.091643] iwlwifi 0000:01:00.0: 0x00000000 | time gp1 Dec 30 21:35:56 schramm kernel: [ 1364.091647] iwlwifi 0000:01:00.0: 0x509414C2 | time gp2 Dec 30 21:35:56 schramm kernel: [ 1364.091651] iwlwifi 0000:01:00.0: 0x00000001 | uCode revision type Dec 30 21:35:56 schramm kernel: [ 1364.091656] iwlwifi 0000:01:00.0: 0x0000001D | uCode version major Dec 30 21:35:56 schramm kernel: [ 1364.091660] iwlwifi 0000:01:00.0: 0x00095007 | uCode version minor Dec 30 21:35:56 schramm kernel: [ 1364.091665] iwlwifi 0000:01:00.0: 0x00000210 | hw version Dec 30 21:35:56 schramm kernel: [ 1364.091669] iwlwifi 0000:01:00.0: 0x00C89200 | board version Dec 30 21:35:56 schramm kernel: [ 1364.091674] iwlwifi 0000:01:00.0: 0x0072001C | hcmd Dec 30 21:35:56 schramm kernel: [ 1364.091678] iwlwifi 0000:01:00.0: 0x24022080 | isr0 Dec 30 21:35:56 schramm kernel: [ 1364.091682] iwlwifi 0000:01:00.0: 0x00000000 | isr1 Dec 30 21:35:56 schramm kernel: [ 1364.091686] iwlwifi 0000:01:00.0: 0x0000000A | isr2 Dec 30 21:35:56 schramm kernel: [ 1364.091690] iwlwifi 0000:01:00.0: 0x004134C0 | isr3 Dec 30 21:35:56 schramm kernel: [ 1364.091694] iwlwifi 0000:01:00.0: 0x00000000 | isr4 Dec 30 21:35:56 schramm kernel: [ 1364.091699] iwlwifi 0000:01:00.0: 0x050B001C | last cmd Id Dec 30 21:35:56 schramm kernel: [ 1364.091703] iwlwifi 0000:01:00.0: 0x00000000 | wait_event Dec 30 21:35:56 schramm kernel: [ 1364.091708] iwlwifi 0000:01:00.0: 0x000000D4 | l2p_control Dec 30 21:35:56 schramm kernel: [ 1364.091712] iwlwifi 0000:01:00.0: 0x00018030 | l2p_duration Dec 30 21:35:56 schramm kernel: [ 1364.091717] iwlwifi 0000:01:00.0: 0x00000007 | l2p_mhvalid Dec 30 21:35:56 schramm kernel: [ 1364.091721] iwlwifi 0000:01:00.0: 0x00000081 | l2p_addr_match Dec 30 21:35:56 schramm kernel: [ 1364.091725] iwlwifi 0000:01:00.0: 0x00000007 | lmpm_pmg_sel Dec 30 21:35:56 schramm kernel: [ 1364.091730] iwlwifi 0000:01:00.0: 0x29102230 | timestamp Dec 30 21:35:56 schramm kernel: [ 1364.091734] iwlwifi 0000:01:00.0: 0x00002030 | flow_handler Dec 30 21:35:56 schramm kernel: [ 1364.091744] ieee80211 phy0: Hardware restart was requested Dec 30 21:35:56 schramm kernel: [ 1364.091790] iwlwifi 0000:01:00.0: FW Error notification: type 0x00000000 cmd_id 0x1C Dec 30 21:35:56 schramm kernel: [ 1364.091795] iwlwifi 0000:01:00.0: FW Error notification: seq 0x0072 service 0x0000001C Dec 30 21:35:56 schramm kernel: [ 1364.091800] iwlwifi 0000:01:00.0: FW Error notification: timestamp 0x 509408DC Dec 30 21:35:56 schramm kernel: [ 1364.196558] ------------[ cut here ]------------ Any help appreciated as Ubuntu is my only OS. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1728651 Title: System hangs after iwlwifi firmware crash Status in linux-firmware package in Ubuntu: Confirmed Bug description: Since upgrading to Kubuntu 17.10 my HP EliteBook 820 G3 hangs at unpredictable times. I have experienced probably 20 hangs. Once the system is hung no mouse movement, NumLock toggle, VT switch, Ctrl+Alt+Del, SysRq keys, SSH attempts have any effect whatsoever. Any audio playing is stuck looping in the hardware buffer. The system is really stuck. Only the keyboard backlight is still responsive. The only correlation I have noticed is that the system only hangs if WiFi is enabled. This morning I experienced two hangs in ten minutes necessitating reboots. Having disabled WiFi the system has been stable since ~1100 (~5 hours). Often, I see a iwlwifi hardware reset in the logs before the system dies: /var/log/syslog:Oct 30 11:49:30 fry kernel: [ 6529.550751] iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting 0x82000000. (apport has hopefully uploaded the full log, please lmk if not). Sometimes the message doesn't make it into the logs, and ext4 truncates the file at the next mount. There seems to be no correlation with any messages immediately before the wifi chip dies. It doesn't seem to matter whether I'm at home or at work. I have wired ethernet at work simultaneously with wifi, but the wifi provides IPv6 so I would imagine most traffic uses wifi, so it's hard to say whether there's any effect of the traffic load on the probability of failure. Here is a sample of the firmware load: /var/log/syslog.5.gz:Oct 24 15:37:26 fry kernel: [ 7.604743] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002) /var/log/syslog.5.gz:Oct 24 15:37:26 fry kernel: [ 7.611790] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-8000C-33.ucode failed with error -2 /var/log/syslog.5.gz:Oct 24 15:37:26 fry kernel: [ 7.611930] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-8000C-32.ucode failed with error -2 /var/log/syslog.5.gz:Oct 24 15:37:26 fry kernel: [ 7.620028] iwlwifi 0000:02:00.0: loaded firmware version 31.532993.0 op_mode iwlmvm /var/log/syslog.5.gz:Oct 24 15:37:26 fry kernel: [ 7.650972] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208 02:00.0 Network controller: Intel Corporation Wireless 8260 (rev 3a) Any help appreciated. Thanks, Bruce ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: xorg 1:7.7+19ubuntu3 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 CompositorRunning: None CurrentDesktop: KDE Date: Mon Oct 30 16:15:43 2017 DistUpgraded: 2017-10-15 14:47:25,517 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: artful DistroVariant: kubuntu GraphicsCard: Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company HD Graphics 520 [103c:807c] InstallationDate: Installed on 2016-09-09 (416 days ago) InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: HP HP EliteBook 820 G3 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-generic.efi.signed root=/dev/mapper/kubuntu--vg-root ro SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to artful on 2017-10-15 (15 days ago) dmi.bios.date: 11/01/2016 dmi.bios.vendor: HP dmi.bios.version: N75 Ver. 01.13 dmi.board.name: 807C dmi.board.vendor: HP dmi.board.version: KBC Version 85.74 dmi.chassis.asset.tag: 5CG6354JW5 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrN75Ver.01.13:bd11/01/2016:svnHP:pnHPEliteBook820G3:pvr:rvnHP:rn807C:rvrKBCVersion85.74:cvnHP:ct10:cvr: dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI dmi.product.name: HP EliteBook 820 G3 dmi.sys.vendor: HP version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.83-1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.2-0ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.2-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1728651/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp