I have an Intel 7260 WiFi card in my desktop (lspci output: 09:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)), running 18.04. All the way since 17.04 I have experienced random freezes, where the entire system would be unresponsive, I was unable to Ctrl+Alt+F1 to a different console, and I couldn't connect to it via ssh. After upgrading to 17.10 (and a fresh install of 17.10), and subsequently upgrading to 18.04, the issue intensified, appearing at least hourly, often quicker than that, and only a hard reset would let me access my system again. The issue is also present in Linux Mint 18.3. Freezes could happen at any time, regardless of usage (or just idling).
After getting a tip that this might be caused by the WiFi card, I looked at the provided firmware from Intel's site, and compared the files to the files present in /lib/firmware/. The file provided by Intel for my specific card is iwlwifi-7260-14.ucode, but the files present in the folder were the numbers 7, 8, 9, 10, 12, 13, 16, and 17. Downloading the firmware from Intel, and adding the -14 file to the folder solved the issue of the screen freezing, and the issue has not appeared for the ten hours I've been running since applying the fix.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.13.0-32-generic 4.13.0-32.35
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.8-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sten 2687 F.... pulseaudio
/dev/snd/controlC1: sten 2687 F.... pulseaudio
CurrentDesktop: KDE
Date: Mon Feb 12 21:18:57 2018
HibernationDevice: RESUME=UUID=96fd0755-bbbc-43ce-9174-b4de65ea2e26
InstallationDate: Installed on 2017-10-27 (107 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
MachineType: System manufacturer System Product Name
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed root=UUID=b3449b90-a2aa-4c46-8837-574f25841071 ro quiet splash intel_idle.max_cstate=1 vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.13.0-32-generic N/A
linux-backports-modules-4.13.0-32-generic N/A
linux-firmware 1.170
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2018-02-05 (7 days ago)
dmi.bios.date: 01/22/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3803
dmi.board.asset.tag: Default string
dmi.board.name: PRIME B350-PLUS
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3803:bd01/22/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEB350-PLUS:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
This change was made by a bot.