David Hennerström, thank you for taking the time to report this bug and helping to make Ubuntu better. However, I am closing it because the bug has been fixed in the latest development version of Ubuntu - Xenial Xerus.
This is a significant bug in Ubuntu. If you need a fix for the bug in previous versions of Ubuntu, please perform as much as possible of the SRU Procedure [1] to bring the need to a developer's attention. [1]: https://wiki.ubuntu.com/StableReleaseUpdates#Procedure ** 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/1527382 Title: Marvell wifi does not work on Surface Pro (module mwifiex) Status in linux package in Ubuntu: Fix Released Bug description: Hi, This was originally added as a comment on bug 1449438, but I was asked to submit it as a new bug instead. I recently bought a used Surface Pro 1 and installed Ubuntu 15.10 on it (with kernel 4.2.0). Already during install it locked up totally two times before I tried without connecting to the wireless network. After install everything seemed to work fine, I was even able to run apt-get update, but when I started up a browser the computer froze up again. Using the USB wifi I normally have on my Raspberry Pi (Dlink DWA-127) I started looking for a solution and even installed linux- crashdump to attempt to debug it. However, once I got the crashkernel working so I would be able to debug I realized that it was not a real kernel crash but something else that made the computer unresponsive. To limit the amount of things active I logged in through the console (ctrl+alt+F1) and used wget to generate network traffic. The computer immediately went unresponsive, but there was no kernel oops. After a while some error messages started appearing: NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [thermalId:608] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [thermalId:608] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [thermalId:608] INFO: task systemd:1 blocked for more than 120 seconds. Tainted: G W L 4.2.0-18-generic #22-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. INFO: task systemd-journal:252 blocked for more than 120 seconds. Tainted: G W L 4.2.0-18-generic #22-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. INFO: task sd-resolve:469 blocked for more than 120 seconds. Tainted: G W L 4.2.0-18-generic #22-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. INFO: task (tmpfiles).1453 blocked for more than 120 seconds. Tainted: G W L 4.2.0-18-generic #22-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [thermalId:608] (Transcribed from a photo of the screen...) Following advice from this thread I installed the 4.3 mainline kernel, and now everything seems to be working. I am getting a lot of "usb 1-3: data: -ENOSR is returned" messages in the kernel log, but as far as I can tell they do not affect performance. Playing sound through a Creative D100 bluetooth speaker also works, with the A2DP sink mode active and stereo output. From looking at the code there are quite a few changes to the mwifiex driver between 4.2.0 and 4.3.0, it does not seem meaningful to port them back just to make 15.10 work with the default kernel. Hope that helps, David ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-19-generic 4.2.0-19.23 ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6 Uname: Linux 4.2.0-19-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 1414 F.... pulseaudio CurrentDesktop: Unity Date: Thu Dec 17 21:21:19 2015 HibernationDevice: RESUME=UUID=f8dfd2f1-17e5-416e-a6ec-2371d2fd7e6c InstallationDate: Installed on 2015-12-12 (4 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Microsoft Corporation Surface with Windows 8 Pro ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-19-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash RelatedPackageVersions: linux-restricted-modules-4.2.0-19-generic N/A linux-backports-modules-4.2.0-19-generic N/A linux-firmware 1.149.3 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/28/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.07.0050 dmi.board.asset.tag: 0 dmi.board.name: Surface with Windows 8 Pro dmi.board.vendor: Microsoft Corporation dmi.board.version: 1 dmi.chassis.asset.tag: 0 dmi.chassis.type: 17 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: 1 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.07.0050:bd11/28/2014:svnMicrosoftCorporation:pnSurfacewithWindows8Pro:pvr1:rvnMicrosoftCorporation:rnSurfacewithWindows8Pro:rvr1:cvnMicrosoftCorporation:ct17:cvr1: dmi.product.name: Surface with Windows 8 Pro dmi.product.version: 1 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527382/+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
