Comment 4 for bug 1728651

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.