# Iwlwifi MicroCode SW error: Fedora 35 **URL:** \ **Category:** Framework Laptop 13\ **Created:** [December 11, 2021, 9:10pm UTC](https://community.frame.work/t/iwlwifi-microcode-sw-error-fedora-35/12154 "2021-12-11T21:10:07Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Rajat\_Datta](https://avatars.discourse-cdn.com/v4/letter/r/45deac/32.png) [@Rajat\_Datta](https://community.frame.work/u/Rajat_Datta)\ **Post date:** [December 11, 2021, 9:10pm UTC](https://community.frame.work/t/iwlwifi-microcode-sw-error-fedora-35/12154/1 "2021-12-11T21:10:07Z")
My Frame.work laptop is experiencing intermittent wifi failures (log file contents below). I have to turn the wifi off and on to reconnect. At this point, it is failing every few hours, but completely unpredictably. I have Fedora 35 installed: Linux fedora 5.15.6-200.fc35.x86\_64 Would appreciate any suggestions to try. Rajat Log file (from dmesg): [48623.384939] iwlwifi 0000:aa:00.0: Microcode SW error detected. Restarting 0x0. [48623.385446] iwlwifi 0000:aa:00.0: Start IWL Error Log Dump: [48623.385449] iwlwifi 0000:aa:00.0: Transport status: 0x0000004A, valid: 6 [48623.385453] iwlwifi 0000:aa:00.0: Loaded firmware version: 66.55c64978.0 ty-a0-gf-a0-66.ucode [48623.385456] iwlwifi 0000:aa:00.0: 0x00000071 | NMI\_INTERRUPT\_UMAC\_FATAL [48623.385459] iwlwifi 0000:aa:00.0: 0x00808A14 | trm\_hw\_status0 [48623.385461] iwlwifi 0000:aa:00.0: 0x00000000 | trm\_hw\_status1 [48623.385464] iwlwifi 0000:aa:00.0: 0x004DA1A2 | branchlink2 [48623.385466] iwlwifi 0000:aa:00.0: 0x004D0766 | interruptlink1 [48623.385467] iwlwifi 0000:aa:00.0: 0x004D0766 | interruptlink2 [48623.385469] iwlwifi 0000:aa:00.0: 0x0000C074 | data1 [48623.385471] iwlwifi 0000:aa:00.0: 0x00000010 | data2 [48623.385473] iwlwifi 0000:aa:00.0: 0x00000000 | data3 [48623.385474] iwlwifi 0000:aa:00.0: 0x44C11FEF | beacon time [48623.385476] iwlwifi 0000:aa:00.0: 0x49159456 | tsf low [48623.385478] iwlwifi 0000:aa:00.0: 0x0000001D | tsf hi [48623.385480] iwlwifi 0000:aa:00.0: 0x00000000 | time gp1 [48623.385482] iwlwifi 0000:aa:00.0: 0x0F2CF3F1 | time gp2 [48623.385483] iwlwifi 0000:aa:00.0: 0x00000001 | uCode revision type [48623.385485] iwlwifi 0000:aa:00.0: 0x00000042 | uCode version major [48623.385487] iwlwifi 0000:aa:00.0: 0x55C64978 | uCode version minor [48623.385489] iwlwifi 0000:aa:00.0: 0x00000420 | hw version [48623.385491] iwlwifi 0000:aa:00.0: 0x00C89002 | board version [48623.385493] iwlwifi 0000:aa:00.0: 0x8026FC03 | hcmd [48623.385494] iwlwifi 0000:aa:00.0: 0xA4020000 | isr0 [48623.385496] iwlwifi 0000:aa:00.0: 0x01000000 | isr1 [48623.385498] iwlwifi 0000:aa:00.0: 0x48F0000A | isr2 [48623.385499] iwlwifi 0000:aa:00.0: 0x00C3480C | isr3 [48623.385501] iwlwifi 0000:aa:00.0: 0x00000000 | isr4 [48623.385503] iwlwifi 0000:aa:00.0: 0x00DD019C | last cmd Id [48623.385504] iwlwifi 0000:aa:00.0: 0x0000C074 | wait\_event [48623.385506] iwlwifi 0000:aa:00.0: 0x00004208 | l2p\_control [48623.385508] iwlwifi 0000:aa:00.0: 0x00012034 | l2p\_duration [48623.385510] iwlwifi 0000:aa:00.0: 0x0000033F | l2p\_mhvalid [48623.385512] iwlwifi 0000:aa:00.0: 0x00E60898 | l2p\_addr\_match [48623.385514] iwlwifi 0000:aa:00.0: 0x00000009 | lmpm\_pmg\_sel [48623.385515] iwlwifi 0000:aa:00.0: 0x00000000 | timestamp [48623.385517] iwlwifi 0000:aa:00.0: 0x00006018 | flow\_handler [48623.385747] iwlwifi 0000:aa:00.0: Start IWL Error Log Dump: [48623.385749] iwlwifi 0000:aa:00.0: Transport status: 0x0000004A, valid: 7 [48623.385753] iwlwifi 0000:aa:00.0: 0x20003463 | ADVANCED\_SYSASSERT [48623.385756] iwlwifi 0000:aa:00.0: 0x00000000 | umac branchlink1 [48623.385759] iwlwifi 0000:aa:00.0: 0x8045DFC6 | umac branchlink2 [48623.385761] iwlwifi 0000:aa:00.0: 0xC008144C | umac interruptlink1 [48623.385764] iwlwifi 0000:aa:00.0: 0x00000000 | umac interruptlink2 [48623.385766] iwlwifi 0000:aa:00.0: 0x49159448 | umac data1 [48623.385768] iwlwifi 0000:aa:00.0: 0x0F2CF3E2 | umac data2 [48623.385771] iwlwifi 0000:aa:00.0: 0x3B41245E | umac data3 [48623.385773] iwlwifi 0000:aa:00.0: 0x00000042 | umac major [48623.385776] iwlwifi 0000:aa:00.0: 0x55C64978 | umac minor [48623.385778] iwlwifi 0000:aa:00.0: 0x0F2CF3E9 | frame pointer [48623.385781] iwlwifi 0000:aa:00.0: 0xC0885E04 | stack pointer [48623.385783] iwlwifi 0000:aa:00.0: 0x00DE010D | last host cmd [48623.385786] iwlwifi 0000:aa:00.0: 0x00000000 | isr status reg [48623.385988] iwlwifi 0000:aa:00.0: IML/ROM dump: [48623.385990] iwlwifi 0000:aa:00.0: 0x00000B03 | IML/ROM error/state [48623.386050] iwlwifi 0000:aa:00.0: 0x00007694 | IML/ROM data1 [48623.386063] iwlwifi 0000:aa:00.0: 0x00000080 | IML/ROM WFPM\_AUTH\_KEY\_0 [48623.386071] iwlwifi 0000:aa:00.0: Fseq Registers: [48623.386123] iwlwifi 0000:aa:00.0: 0x60000000 | FSEQ\_ERROR\_CODE [48623.386181] iwlwifi 0000:aa:00.0: 0x80440003 | FSEQ\_TOP\_INIT\_VERSION [48623.386329] iwlwifi 0000:aa:00.0: 0x00080009 | FSEQ\_CNVIO\_INIT\_VERSION [48623.386458] iwlwifi 0000:aa:00.0: 0x0000A652 | FSEQ\_OTP\_VERSION [48623.386584] iwlwifi 0000:aa:00.0: 0x00000002 | FSEQ\_TOP\_CONTENT\_VERSION [48623.386709] iwlwifi 0000:aa:00.0: 0x4552414E | FSEQ\_ALIVE\_TOKEN [48623.386761] iwlwifi 0000:aa:00.0: 0x00400410 | FSEQ\_CNVI\_ID [48623.386812] iwlwifi 0000:aa:00.0: 0x00400410 | FSEQ\_CNVR\_ID [48623.386863] iwlwifi 0000:aa:00.0: 0x00400410 | CNVI\_AUX\_MISC\_CHIP [48623.386916] iwlwifi 0000:aa:00.0: 0x00400410 | CNVR\_AUX\_MISC\_CHIP [48623.386971] iwlwifi 0000:aa:00.0: 0x00009061 | CNVR\_SCU\_SD\_REGS\_SD\_REG\_DIG\_DCDC\_VTRIM [48623.387025] iwlwifi 0000:aa:00.0: 0x00000061 | CNVR\_SCU\_SD\_REGS\_SD\_REG\_ACTIVE\_VDIG\_MIRROR ---
**Author:** ![IPGentlemann](https://sea1.discourse-cdn.com/flex001/user_avatar/community.frame.work/ipgentlemann/32/5426_2.png) [@IPGentlemann](https://community.frame.work/u/IPGentlemann)\ **Post date:** [December 11, 2021, 10:35pm UTC](https://community.frame.work/t/iwlwifi-microcode-sw-error-fedora-35/12154/2 "2021-12-11T22:35:25Z")
This sounds similar to this problem. [http://community.frame.work/t/wifi-problems-5ghz-not-working/12084](http://community.frame.work/t/wifi-problems-5ghz-not-working/12084) Does it happen when you are connecting to 5GHz wifi? Does it not happen when you connect to 2.4GHz? ---
**Author:** ![Rajat\_Datta](https://avatars.discourse-cdn.com/v4/letter/r/45deac/32.png) [@Rajat\_Datta](https://community.frame.work/u/Rajat_Datta)\ **Post date:** [December 12, 2021, 4:40am UTC](https://community.frame.work/t/iwlwifi-microcode-sw-error-fedora-35/12154/3 "2021-12-12T04:40:06Z")
I haven’t tested specifically on 2.4GHz (will have to set up another router to test that early tomorrow), but this has been happening intermittently, I believe, on both 2.4 and 5 GHz, but I cannot be sure (I have been using wifi networks around town). My home wifi is an Eero on 5GHz. ---
**Author:** ![nrp](https://sea1.discourse-cdn.com/flex001/user_avatar/community.frame.work/nrp/32/352_2.png) [@nrp](https://community.frame.work/u/nrp)\ **Post date:** [December 13, 2021, 4:57am UTC](https://community.frame.work/t/iwlwifi-microcode-sw-error-fedora-35/12154/4 "2021-12-13T04:57:04Z")
This is likely this known issue on the Intel WiFi driver: [Using the AX210 with Linux on the Framework Laptop - #94 by Andrew\_Marshall](http://community.frame.work/t/using-the-ax210-with-linux-on-the-framework-laptop/1844/94)