Thanks Christopher - that was a good idea. After applying the latest BIOS:
fifieldt@nomad115:~$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date [sudo] password for fifieldt: N10ET38W (1.17 ) 08/20/2015 the microcode error disappears. However, connections to 802.11AC networks are still not possible, with the error: "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded" Dec 28 13:36:30 nomad115 kernel: [ 1399.324904] wlan0: capabilities/regulatory prevented using AP HT/VHT configuration, downgraded Dec 28 13:36:30 nomad115 wpa_supplicant[996]: wlan0: Trying to associate with 30:b5:c2:84:95:0b (SSID='chocolateblock5' freq=5765 MHz) Dec 28 13:36:30 nomad115 NetworkManager[857]: <info> (wlan0): supplicant interface state: scanning -> authenticating Dec 28 13:36:30 nomad115 kernel: [ 1399.330730] wlan0: send auth to 30:b5:c2:84:95:0b (try 1/3) Dec 28 13:36:30 nomad115 kernel: [ 1399.331525] wlan0: authenticated Dec 28 13:36:30 nomad115 kernel: [ 1399.332430] wlan0: associate with 30:b5:c2:84:95:0b (try 1/3) Dec 28 13:36:30 nomad115 kernel: [ 1399.333555] wlan0: RX AssocResp from 30:b5:c2:84:95:0b (capab=0x11 status=104 aid=0) Dec 28 13:36:30 nomad115 kernel: [ 1399.333560] wlan0: 30:b5:c2:84:95:0b denied association (code=104) which appears to be related to this bug: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1158749 continuing discussion there. ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1465178 Title: Microcode SW error detected. Restarting 0x2000000 on connecting to AC network with iwlwifi-7265-ucode-25.228.9.0 Status in linux package in Ubuntu: Fix Released Bug description: When trying to connect to an 802.11AC network using an Intel 7265 with firmware iwlwifi-7265-ucode-25.228.9.0 on kernel 3.16.0-38-generic #52~14.04.1-Ubuntu, the error " Microcode SW error detected. Restarting 0x2000000." is received, the card crashes and can't connect to the network. The same card/driver/firmware combination performs well on 2.4GHz networks, and also 802.11a. Call trace: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465178/+attachment/4540153/+files/log --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: fifieldt 2135 F.... pulseaudio /dev/snd/controlC0: fifieldt 2135 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=a83453a5-d150-481d-b8f4-800d6290a06a InstallationDate: Installed on 2015-04-11 (256 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) Lsusb: Bus 001 Device 003: ID 5986:0366 Acer, Inc Bus 001 Device 002: ID 8087:8001 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20CMA00ETW Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-55-generic root=UUID=c31100a6-e1cc-4df6-aeb7-521edf7c6c23 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-55.74~14.04.1-generic 3.16.7-ckt19 RelatedPackageVersions: linux-restricted-modules-3.16.0-55-generic N/A linux-backports-modules-3.16.0-55-generic N/A linux-firmware 1.127.19 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: trusty Uname: Linux 3.16.0-55-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/01/2014 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET27W (1.04 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CMA00ETW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET27W(1.04):bd12/01/2014:svnLENOVO:pn20CMA00ETW:pvrThinkPadX250:rvnLENOVO:rn20CMA00ETW:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20CMA00ETW dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465178/+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
