Hello Stanislaw, Indeed that error was fixed but the device is still non functional and I got two of them so it is not defective hardware. I tested with: rmmod iwl4965 modprobe iwl4965 swcrypto=1 and after a reboot I added: options iwlwifi swcrypto=1 here: /etc/modprobe.d/iwlwifi.conf This time some new errors came to surface: [ 1635.006819] iwl4965 0000:02:00.0: Error sending TX power (-5) [ 1736.613307] iwl4965 0000:02:00.0: Can't stop Rx DMA. In detail: [ 1334.537673] wlan0: authenticate with c6:27:28:**:**:** [ 1334.557315] wlan0: Allocated STA c6:27:28:**:**:** [ 1334.557347] wlan0: HE not supported, disabling HE and EHT [ 1334.557352] wlan0: EHT not supported, disabling EHT [ 1334.557357] wlan0: 40 MHz not supported [ 1334.557502] wlan0: Inserted STA c6:27:28:**:**:** [ 1334.557509] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1334.700383] wlan0: authenticate with c6:27:28:**:**:** [ 1334.713363] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1334.809397] wlan0: authenticated [ 1334.809412] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1334.905323] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1334.905342] wlan0: Removed STA c6:27:28:**:**:** [ 1334.905491] wlan0: Destroyed STA c6:27:28:**:**:** [ 1346.945244] wlan0: authenticate with c6:27:28:**:**:** [ 1346.973500] wlan0: Allocated STA c6:27:28:**:**:** [ 1346.973544] wlan0: HE not supported, disabling HE and EHT [ 1346.973549] wlan0: EHT not supported, disabling EHT [ 1346.973558] wlan0: 40 MHz not supported [ 1346.973778] wlan0: Inserted STA c6:27:28:**:**:** [ 1346.973787] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1348.985488] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1349.140047] wlan0: send auth to c6:27:28:**:**:** (try 3/3) [ 1349.281270] wlan0: authenticate with c6:27:28:**:**:** [ 1349.293504] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1349.392493] wlan0: authenticated [ 1349.392510] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1349.465546] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1349.465567] wlan0: Removed STA c6:27:28:**:**:** [ 1349.465659] wlan0: Destroyed STA c6:27:28:**:**:** [ 1362.286207] wlan0: authenticate with c6:27:28:**:**:** [ 1362.305641] wlan0: Allocated STA c6:27:28:**:**:** [ 1362.305671] wlan0: HE not supported, disabling HE and EHT [ 1362.305676] wlan0: EHT not supported, disabling EHT [ 1362.305682] wlan0: 40 MHz not supported [ 1362.305826] wlan0: Inserted STA c6:27:28:**:**:** [ 1362.305833] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1364.310367] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1364.458140] wlan0: send auth to c6:27:28:**:**:** (try 3/3) [ 1364.600945] wlan0: authenticate with c6:27:28:**:**:** [ 1364.613682] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1364.706960] wlan0: authenticated [ 1364.706973] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1364.769623] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1364.769641] wlan0: Removed STA c6:27:28:**:**:** [ 1364.769787] wlan0: Destroyed STA c6:27:28:**:**:** [ 1376.829234] wlan0: authenticate with c6:27:28:**:**:** [ 1376.841759] wlan0: Allocated STA c6:27:28:**:**:** [ 1376.841789] wlan0: HE not supported, disabling HE and EHT [ 1376.841791] wlan0: EHT not supported, disabling EHT [ 1376.841796] wlan0: 40 MHz not supported [ 1376.841924] wlan0: Inserted STA c6:27:28:**:**:** [ 1376.841928] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1378.015830] wlan0: aborting authentication with c6:27:28:**:**:** by local choice (Reason: 3=DEAUTH_LEAVING) [ 1378.029754] wlan0: Removed STA c6:27:28:**:**:** [ 1378.029922] wlan0: Destroyed STA c6:27:28:**:**:** [ 1390.358913] wlan0: authenticate with c6:27:28:**:**:** [ 1390.373953] wlan0: Allocated STA c6:27:28:**:**:** [ 1390.373984] wlan0: HE not supported, disabling HE and EHT [ 1390.373992] wlan0: EHT not supported, disabling EHT [ 1390.373998] wlan0: 40 MHz not supported [ 1390.374128] wlan0: Inserted STA c6:27:28:**:**:** [ 1390.374136] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1390.522330] wlan0: authenticate with c6:27:28:**:**:** [ 1390.549913] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1390.621516] wlan0: authenticated [ 1390.621531] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1390.725981] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1390.725999] wlan0: Removed STA c6:27:28:**:**:** [ 1390.726142] wlan0: Destroyed STA c6:27:28:**:**:** [ 1402.731377] wlan0: authenticate with c6:27:28:**:**:** [ 1402.754076] wlan0: Allocated STA c6:27:28:**:**:** [ 1402.754107] wlan0: HE not supported, disabling HE and EHT [ 1402.754111] wlan0: EHT not supported, disabling EHT [ 1402.754117] wlan0: 40 MHz not supported [ 1402.754243] wlan0: Inserted STA c6:27:28:**:**:** [ 1402.754250] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1404.760795] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1404.897746] wlan0: send auth to c6:27:28:**:**:** (try 3/3) [ 1405.047343] wlan0: authenticate with c6:27:28:**:**:** [ 1405.062086] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1405.148172] wlan0: authenticated [ 1405.148191] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1405.286057] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1405.286078] wlan0: Removed STA c6:27:28:**:**:** [ 1405.286219] wlan0: Destroyed STA c6:27:28:**:**:** [ 1634.944032] iwl4965 0000:02:00.0: vgaarb: pci_notify [ 1635.006819] iwl4965 0000:02:00.0: Error sending TX power (-5) [ 1635.078785] pci 0000:02:00.0: vgaarb: pci_notify Module loaded here: [ 1666.956980] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:d [ 1666.956989] iwl4965: Copyright(c) 2003-2011 Intel Corporation [ 1666.957030] iwl4965 0000:02:00.0: vgaarb: pci_notify [ 1666.957039] iwl4965 0000:02:00.0: runtime IRQ mapping not provided by arch [ 1666.957103] iwl4965 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control [ 1666.957223] iwl4965 0000:02:00.0: enabling bus mastering [ 1666.957253] iwl4965 0000:02:00.0: Detected Intel(R) Wireless WiFi Link 4965AGN, REV=0x4 [ 1666.999179] iwl4965 0000:02:00.0: device EEPROM VER=0x36, CALIB=0x5 [ 1666.999193] iwl4965 0000:02:00.0: Tunable channels: 13 802.11bg, 19 802.11a channels [ 1666.999497] iwl4965 0000:02:00.0: vgaarb: pci_notify [ 1666.999632] iwl4965 0000:02:00.0: loaded firmware version 228.61.2.24 [ 1666.999840] ieee80211 phy1: Selected rate control algorithm 'iwl-4965-rs' [ 1684.544669] wlan0: authenticate with c6:27:28:**:**:** [ 1684.584425] wlan0: Allocated STA c6:27:28:**:**:** [ 1684.584459] wlan0: HE not supported, disabling HE and EHT [ 1684.584463] wlan0: EHT not supported, disabling EHT [ 1684.584470] wlan0: 40 MHz not supported [ 1684.606124] wlan0: Inserted STA c6:27:28:**:**:** [ 1684.606139] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1684.642375] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1684.789570] wlan0: authenticate with c6:27:28:**:**:** [ 1684.812363] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1684.848190] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1684.893973] wlan0: authenticated [ 1684.893988] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1687.106441] wlan0: authenticate with c6:27:28:**:**:** [ 1687.120408] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1687.159559] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1687.298837] wlan0: authenticate with c6:27:28:**:**:** [ 1687.312388] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1687.347211] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1687.410445] wlan0: authenticated [ 1690.178463] wlan0: authenticate with c6:27:28:**:**:** [ 1690.200390] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1690.242843] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1690.378920] wlan0: authenticate with c6:27:28:**:**:** [ 1690.404411] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1690.430707] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1690.491418] wlan0: authenticated [ 1693.658542] wlan0: authenticate with c6:27:28:**:**:** [ 1693.688393] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1693.729205] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1693.869910] wlan0: authenticate with c6:27:28:**:**:** [ 1693.888382] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1693.922554] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1693.978397] wlan0: authenticated [ 1699.012448] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1699.012471] wlan0: Removed STA c6:27:28:**:**:** [ 1699.012629] wlan0: Destroyed STA c6:27:28:**:**:** [ 1700.063570] iwl4965 0000:02:00.0: Can't stop Rx DMA. [ 1710.656930] wlan0: authenticate with c6:27:28:**:**:** [ 1710.672404] wlan0: Allocated STA c6:27:28:**:**:** [ 1710.672437] wlan0: HE not supported, disabling HE and EHT [ 1710.672442] wlan0: EHT not supported, disabling EHT [ 1710.672449] wlan0: 40 MHz not supported [ 1710.672622] wlan0: Inserted STA c6:27:28:**:**:** [ 1710.672630] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1710.819981] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1710.960209] wlan0: authenticate with c6:27:28:**:**:** [ 1710.976349] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1711.076359] wlan0: authenticated [ 1711.076376] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1711.156395] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1711.156414] wlan0: Removed STA c6:27:28:**:**:** [ 1711.156557] wlan0: Destroyed STA c6:27:28:**:**:** [ 1723.252501] wlan0: authenticate with c6:27:28:**:**:** [ 1723.276416] wlan0: Allocated STA c6:27:28:**:**:** [ 1723.276449] wlan0: HE not supported, disabling HE and EHT [ 1723.276453] wlan0: EHT not supported, disabling EHT [ 1723.276459] wlan0: 40 MHz not supported [ 1723.276605] wlan0: Inserted STA c6:27:28:**:**:** [ 1723.276612] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1725.280410] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1725.422479] wlan0: send auth to c6:27:28:**:**:** (try 3/3) [ 1725.565379] wlan0: authenticate with c6:27:28:**:**:** [ 1725.588412] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1725.666706] wlan0: authenticated [ 1725.666722] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1725.772388] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1725.772406] wlan0: Removed STA c6:27:28:**:**:** [ 1725.772554] wlan0: Destroyed STA c6:27:28:**:**:** [ 1736.613307] iwl4965 0000:02:00.0: Can't stop Rx DMA. [ 1746.290214] wlan0: authenticate with c6:27:28:**:**:** [ 1746.328440] wlan0: Allocated STA c6:27:28:**:**:** [ 1746.328475] wlan0: HE not supported, disabling HE and EHT [ 1746.328480] wlan0: EHT not supported, disabling EHT [ 1746.328486] wlan0: 40 MHz not supported [ 1746.328627] wlan0: Inserted STA c6:27:28:**:**:** [ 1746.328634] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1746.470935] wlan0: authenticate with c6:27:28:**:**:** [ 1746.484363] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1746.572808] wlan0: authenticated [ 1746.572822] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1746.656400] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1746.656417] wlan0: Removed STA c6:27:28:**:**:** [ 1746.656558] wlan0: Destroyed STA c6:27:28:**:**:** [ 1758.692182] wlan0: authenticate with c6:27:28:**:**:** [ 1758.712464] wlan0: Allocated STA c6:27:28:**:**:** [ 1758.712497] wlan0: HE not supported, disabling HE and EHT [ 1758.712502] wlan0: EHT not supported, disabling EHT [ 1758.712507] wlan0: 40 MHz not supported [ 1758.712643] wlan0: Inserted STA c6:27:28:**:**:** [ 1758.712651] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1760.736423] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1760.873119] wlan0: send auth to c6:27:28:**:**:** (try 3/3) [ 1761.020778] wlan0: authenticate with c6:27:28:**:**:** [ 1761.040373] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1761.127529] wlan0: authenticated [ 1761.127545] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1761.292330] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1761.292348] wlan0: Removed STA c6:27:28:**:**:** [ 1761.292486] wlan0: Destroyed STA c6:27:28:**:**:** [ 1784.365757] iwl4965 0000:02:00.0: Can't stop Rx DMA. [ 1804.667349] wlan0: authenticate with c6:27:28:**:**:** [ 1804.692421] wlan0: Allocated STA c6:27:28:**:**:** [ 1804.692453] wlan0: HE not supported, disabling HE and EHT [ 1804.692458] wlan0: EHT not supported, disabling EHT [ 1804.692464] wlan0: 40 MHz not supported [ 1804.692612] wlan0: Inserted STA c6:27:28:**:**:** [ 1804.692619] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1804.832489] wlan0: authenticate with c6:27:28:**:**:** [ 1804.868340] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1804.936487] wlan0: authenticated [ 1804.936502] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1804.956395] wlan0: waiting for beacon from c6:27:28:**:**:** [ 1805.024417] wlan0: associate with c6:27:28:**:**:** (try 1/3) [ 1805.164426] wlan0: associate with c6:27:28:**:**:** (try 2/3) [ 1805.345600] wlan0: associate with c6:27:28:**:**:** (try 3/3) [ 1805.452423] wlan0: association with c6:27:28:**:**:** timed out [ 1805.472401] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1805.472418] wlan0: Removed STA c6:27:28:**:**:** [ 1805.472566] wlan0: Destroyed STA c6:27:28:**:**:** [ 1824.829685] wlan0: authenticate with c6:27:28:**:**:** [ 1824.848377] wlan0: Allocated STA c6:27:28:**:**:** [ 1824.848410] wlan0: HE not supported, disabling HE and EHT [ 1824.848415] wlan0: EHT not supported, disabling EHT [ 1824.848421] wlan0: 40 MHz not supported [ 1824.848558] wlan0: Inserted STA c6:27:28:**:**:** [ 1824.848566] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1825.001929] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1825.003969] wlan0: authenticated [ 1825.003982] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1825.032444] wlan0: waiting for beacon from c6:27:28:**:**:** [ 1825.096377] wlan0: associate with c6:27:28:**:**:** (try 1/3) [ 1825.238853] wlan0: associate with c6:27:28:**:**:** (try 2/3) [ 1825.244131] wlan0: RX AssocResp from c6:27:28:**:**:** (capab=0x1431 status=31 aid=16) [ 1825.244150] wlan0: c6:27:28:**:**:** denied association (code=31) [ 1825.260359] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1825.260375] wlan0: Removed STA c6:27:28:**:**:** [ 1825.260518] wlan0: Destroyed STA c6:27:28:**:**:** [ 1825.289616] wlan0: authenticate with c6:27:28:**:**:** [ 1825.324400] wlan0: Allocated STA c6:27:28:**:**:** [ 1825.324430] wlan0: HE not supported, disabling HE and EHT [ 1825.324435] wlan0: EHT not supported, disabling EHT [ 1825.324441] wlan0: 40 MHz not supported [ 1825.324586] wlan0: Inserted STA c6:27:28:**:**:** [ 1825.324593] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1825.472799] wlan0: send auth to c6:27:28:**:**:** (try 2/3) [ 1825.612963] wlan0: authenticate with c6:27:28:**:**:** [ 1825.644358] wlan0: send auth to c6:27:28:**:**:** (try 1/3) [ 1825.720211] wlan0: authenticated [ 1825.720226] wlan0: moving STA c6:27:28:**:**:** to state 2 [ 1825.740367] wlan0: waiting for beacon from c6:27:28:**:**:** [ 1825.812404] wlan0: associate with c6:27:28:**:**:** (try 1/3) [ 1825.818262] wlan0: RX AssocResp from c6:27:28:**:**:** (capab=0x1431 status=31 aid=16) [ 1825.818281] wlan0: c6:27:28:**:**:** denied association (code=31) [ 1825.832426] wlan0: moving STA c6:27:28:**:**:** to state 1 [ 1825.832442] wlan0: Removed STA c6:27:28:**:**:** [ 1825.832588] wlan0: Destroyed STA c6:27:28:**:**:** All these are from 6.0 plus your patch and swcrypto=1. Iw showed the same things so there is no reason to send it again. Best regards