Running a Lenovo Yoga 720 with kernel 4.14, I pulled the:
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git
tags/iwlwifi-fw-2017-11-03
to try the new fw version 34 on my:
3f:00.0 Network controller [0280]: Intel Corporation Wireless 8265 /
8275 [8086:24fd] (rev 78)
And got this firmware crash and no wifi working:
(for reference firmware version 31.560484.0 from same git pull works)
[ 11.423208] iwlwifi 0000:3f:00.0: Error sending SCAN_REQ_UMAC: time
out after 2000ms.
[ 11.423211] iwlwifi 0000:3f:00.0: Current CMD queue read_ptr 39
write_ptr 40
[ 11.423362] iwlwifi 0000:3f:00.0: Start IWL Error Log Dump:
[ 11.423363] iwlwifi 0000:3f:00.0: Status: 0x00000100, count: 6
[ 11.423364] iwlwifi 0000:3f:00.0: Loaded firmware version: 34.0.1
[ 11.423365] iwlwifi 0000:3f:00.0: 0x00000084 | NMI_INTERRUPT_UNKNOWN
[ 11.423366] iwlwifi 0000:3f:00.0: 0x00A002F1 | trm_hw_status0
[ 11.423366] iwlwifi 0000:3f:00.0: 0x00000000 | trm_hw_status1
[ 11.423367] iwlwifi 0000:3f:00.0: 0x00023FDC | branchlink2
[ 11.423368] iwlwifi 0000:3f:00.0: 0x0003915A | interruptlink1
[ 11.423369] iwlwifi 0000:3f:00.0: 0x0003915A | interruptlink2
[ 11.423369] iwlwifi 0000:3f:00.0: 0x00000000 | data1
[ 11.423370] iwlwifi 0000:3f:00.0: 0x00000080 | data2
[ 11.423371] iwlwifi 0000:3f:00.0: 0x07830000 | data3
[ 11.423372] iwlwifi 0000:3f:00.0: 0x00201DA1 | beacon time
[ 11.423372] iwlwifi 0000:3f:00.0: 0x001FE25D | tsf low
[ 11.423373] iwlwifi 0000:3f:00.0: 0x00000000 | tsf hi
[ 11.423374] iwlwifi 0000:3f:00.0: 0x00000000 | time gp1
[ 11.423375] iwlwifi 0000:3f:00.0: 0x001FE25F | time gp2
[ 11.423375] iwlwifi 0000:3f:00.0: 0x00000001 | uCode revision type
[ 11.423376] iwlwifi 0000:3f:00.0: 0x00000022 | uCode version major
[ 11.423377] iwlwifi 0000:3f:00.0: 0x00000000 | uCode version minor
[ 11.423378] iwlwifi 0000:3f:00.0: 0x00000230 | hw version
[ 11.423378] iwlwifi 0000:3f:00.0: 0x00489000 | board version
[ 11.423379] iwlwifi 0000:3f:00.0: 0x00260128 | hcmd
[ 11.423380] iwlwifi 0000:3f:00.0: 0x00122080 | isr0
[ 11.423381] iwlwifi 0000:3f:00.0: 0x00800000 | isr1
[ 11.423381] iwlwifi 0000:3f:00.0: 0x08001802 | isr2
[ 11.423382] iwlwifi 0000:3f:00.0: 0x004000C0 | isr3
[ 11.423383] iwlwifi 0000:3f:00.0: 0x00000000 | isr4
[ 11.423383] iwlwifi 0000:3f:00.0: 0x00260128 | last cmd Id
[ 11.423384] iwlwifi 0000:3f:00.0: 0x00000000 | wait_event
[ 11.423385] iwlwifi 0000:3f:00.0: 0x0000DFF7 | l2p_control
[ 11.423386] iwlwifi 0000:3f:00.0: 0x00000820 | l2p_duration
[ 11.423386] iwlwifi 0000:3f:00.0: 0x00000000 | l2p_mhvalid
[ 11.423387] iwlwifi 0000:3f:00.0: 0x00000000 | l2p_addr_match
[ 11.423388] iwlwifi 0000:3f:00.0: 0x0000000D | lmpm_pmg_sel
[ 11.423389] iwlwifi 0000:3f:00.0: 0x30101345 | timestamp
[ 11.423389] iwlwifi 0000:3f:00.0: 0x00342030 | flow_handler
[ 11.423455] iwlwifi 0000:3f:00.0: 0x00000000 | ADVANCED_SYSASSERT
[ 11.423456] iwlwifi 0000:3f:00.0: 0x00000000 | umac branchlink1
[ 11.423457] iwlwifi 0000:3f:00.0: 0x00000000 | umac branchlink2
[ 11.423457] iwlwifi 0000:3f:00.0: 0x00000000 | umac interruptlink1
[ 11.423458] iwlwifi 0000:3f:00.0: 0x00000000 | umac interruptlink2
[ 11.423459] iwlwifi 0000:3f:00.0: 0x00000000 | umac data1
[ 11.423460] iwlwifi 0000:3f:00.0: 0x00000000 | umac data2
[ 11.423460] iwlwifi 0000:3f:00.0: 0x00000000 | umac data3
[ 11.423461] iwlwifi 0000:3f:00.0: 0x00000000 | umac major
[ 11.423462] iwlwifi 0000:3f:00.0: 0x00000000 | umac minor
[ 11.423462] iwlwifi 0000:3f:00.0: 0x00000000 | frame pointer
[ 11.423463] iwlwifi 0000:3f:00.0: 0x00000000 | stack pointer
[ 11.423464] iwlwifi 0000:3f:00.0: 0x00000000 | last host cmd
[ 11.423465] iwlwifi 0000:3f:00.0: 0x00000000 | isr status reg
[ 11.423469] ieee80211 phy0: Hardware restart was requested
[ 11.423472] iwlwifi 0000:3f:00.0: Scan failed! ret -110
[ 11.423481] iwlwifi 0000:3f:00.0: Microcode SW error detected.
Restarting 0x2000000.
[ 15.007405] iwlwifi 0000:3f:00.0: Error sending SCAN_REQ_UMAC: time
out after 2000ms.
[ 15.007407] iwlwifi 0000:3f:00.0: Current CMD queue read_ptr 42
write_ptr 43
[ 15.007507] iwlwifi 0000:3f:00.0: Microcode SW error detected.
Restarting 0x2000000.
[ 15.007559] iwlwifi 0000:3f:00.0: Start IWL Error Log Dump:
[ 15.007560] iwlwifi 0000:3f:00.0: Status: 0x00000100, count: 6
[ 15.007561] iwlwifi 0000:3f:00.0: Loaded firmware version: 34.0.1
[ 15.007562] iwlwifi 0000:3f:00.0: 0x00000084 | NMI_INTERRUPT_UNKNOWN
[ 15.007563] iwlwifi 0000:3f:00.0: 0x000002F0 | trm_hw_status0
[ 15.007564] iwlwifi 0000:3f:00.0: 0x00000000 | trm_hw_status1
[ 15.007564] iwlwifi 0000:3f:00.0: 0x00023FDC | branchlink2
[ 15.007565] iwlwifi 0000:3f:00.0: 0x0003915A | interruptlink1
[ 15.007566] iwlwifi 0000:3f:00.0: 0x0003915A | interruptlink2
[ 15.007567] iwlwifi 0000:3f:00.0: 0x00000000 | data1
[ 15.007567] iwlwifi 0000:3f:00.0: 0x00000080 | data2
[ 15.007568] iwlwifi 0000:3f:00.0: 0x07830000 | data3
[ 15.007569] iwlwifi 0000:3f:00.0: 0x00194F47 | beacon time
[ 15.007570] iwlwifi 0000:3f:00.0: 0x002C9934 | tsf low
[ 15.007570] iwlwifi 0000:3f:00.0: 0x00000000 | tsf hi
[ 15.007571] iwlwifi 0000:3f:00.0: 0x00000000 | time gp1
[ 15.007572] iwlwifi 0000:3f:00.0: 0x002C9935 | time gp2
[ 15.007573] iwlwifi 0000:3f:00.0: 0x00000001 | uCode revision type
[ 15.007573] iwlwifi 0000:3f:00.0: 0x00000022 | uCode version major
[ 15.007574] iwlwifi 0000:3f:00.0: 0x00000000 | uCode version minor
[ 15.007575] iwlwifi 0000:3f:00.0: 0x00000230 | hw version
[ 15.007576] iwlwifi 0000:3f:00.0: 0x00489000 | board version
[ 15.007576] iwlwifi 0000:3f:00.0: 0x0029012C | hcmd
[ 15.007577] iwlwifi 0000:3f:00.0: 0x00022080 | isr0
[ 15.007578] iwlwifi 0000:3f:00.0: 0x00800000 | isr1
[ 15.007579] iwlwifi 0000:3f:00.0: 0x08001802 | isr2
[ 15.007579] iwlwifi 0000:3f:00.0: 0x00400080 | isr3
[ 15.007580] iwlwifi 0000:3f:00.0: 0x00000000 | isr4
[ 15.007581] iwlwifi 0000:3f:00.0: 0x0029012C | last cmd Id
[ 15.007582] iwlwifi 0000:3f:00.0: 0x00000000 | wait_event
[ 15.007582] iwlwifi 0000:3f:00.0: 0x0000DFF7 | l2p_control
[ 15.007583] iwlwifi 0000:3f:00.0: 0x00000020 | l2p_duration
[ 15.007584] iwlwifi 0000:3f:00.0: 0x00000000 | l2p_mhvalid
[ 15.007584] iwlwifi 0000:3f:00.0: 0x00000000 | l2p_addr_match
[ 15.007585] iwlwifi 0000:3f:00.0: 0x0000008F | lmpm_pmg_sel
[ 15.007586] iwlwifi 0000:3f:00.0: 0x30101345 | timestamp
[ 15.007587] iwlwifi 0000:3f:00.0: 0x00342030 | flow_handler
[ 15.007653] iwlwifi 0000:3f:00.0: 0x00000000 | ADVANCED_SYSASSERT
[ 15.007654] iwlwifi 0000:3f:00.0: 0x00000000 | umac branchlink1
[ 15.007655] iwlwifi 0000:3f:00.0: 0x00000000 | umac branchlink2
[ 15.007656] iwlwifi 0000:3f:00.0: 0x00000000 | umac interruptlink1
[ 15.007656] iwlwifi 0000:3f:00.0: 0x00000000 | umac interruptlink2
[ 15.007657] iwlwifi 0000:3f:00.0: 0x00000000 | umac data1
[ 15.007658] iwlwifi 0000:3f:00.0: 0x00000000 | umac data2
[ 15.007659] iwlwifi 0000:3f:00.0: 0x00000000 | umac data3
[ 15.007659] iwlwifi 0000:3f:00.0: 0x00000000 | umac major
[ 15.007660] iwlwifi 0000:3f:00.0: 0x00000000 | umac minor
[ 15.007661] iwlwifi 0000:3f:00.0: 0x00000000 | frame pointer
[ 15.007662] iwlwifi 0000:3f:00.0: 0x00000000 | stack pointer
[ 15.007662] iwlwifi 0000:3f:00.0: 0x00000000 | last host cmd
[ 15.007663] iwlwifi 0000:3f:00.0: 0x00000000 | isr status reg
[ 15.007668] ieee80211 phy0: Hardware restart was requested
[ 15.007671] iwlwifi 0000:3f:00.0: Scan failed! ret -110
Any other info you need / want ?
