Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1762248 Title: WiFi connection suddenly drops Status in linux package in Ubuntu: Incomplete Bug description: This started to happen only with newer kernel versions. The WiFi was previously absolutely solid. When the WiFi connection drops, there are clear kernel error messages: Apr 08 22:39:29 konstantin kernel: iwl3945 0000:02:00.0: Queue 4 stuck for 2048 ms. Apr 08 22:39:30 konstantin kernel: iwl3945 0000:02:00.0: On demand firmware reload Apr 08 22:39:30 konstantin kernel: ieee80211 phy0: Hardware restart was requested Apr 08 22:39:30 konstantin kernel: iwl3945 0000:02:00.0: BSM uCode verification failed at addr 0x00003800+0 Apr 08 22:39:30 konstantin kernel: iwl3945 0000:02:00.0: Unable to set up bootstrap uCode: -5 The last two messsages are repeated a few times. This is followed by more detailed stack traces, but the hardware does not recover. Unloading the iwl3945 module and reloading it did not help in a few tests. Looking at the log some more, I see this line Apr 08 22:33:38 konstantin kernel: iwl3945 0000:02:00.0: Enabling power save might cause firmware crashes I will try to find out if this can be disabled and do more test then. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-37-generic 4.13.0-37.42 ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13 Uname: Linux 4.13.0-37-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: regina 1098 F.... pulseaudio CurrentDesktop: GNOME Date: Sun Apr 8 22:56:35 2018 HibernationDevice: RESUME=UUID=4c990619-fde4-4d44-b45a-f240be602537 InstallationDate: Installed on 2017-04-19 (354 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: Hewlett-Packard HP Pavilion dv6500 Notebook PC ProcEnviron: LANG=de_DE.UTF-8 TERM=xterm-256color SHELL=/bin/bash XDG_RUNTIME_DIR=<set> PATH=(custom, no user) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-37-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash video=SVIDEO-1:d vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.13.0-37-generic N/A linux-backports-modules-4.13.0-37-generic N/A linux-firmware 1.169.3 SourcePackage: linux UpgradeStatus: Upgraded to artful on 2018-01-19 (78 days ago) dmi.bios.date: 04/04/2007 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: F.05 dmi.board.name: 30CC dmi.board.vendor: Quanta dmi.board.version: 79.10 dmi.chassis.type: 10 dmi.chassis.vendor: Quanta dmi.chassis.version: N/A dmi.modalias: dmi:bvnHewlett-Packard:bvrF.05:bd04/04/2007:svnHewlett-Packard:pnHPPaviliondv6500NotebookPC:pvrRev1:rvnQuanta:rn30CC:rvr79.10:cvnQuanta:ct10:cvrN/A: dmi.product.family: 103C_5335KV dmi.product.name: HP Pavilion dv6500 Notebook PC dmi.product.version: Rev 1 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762248/+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
