I have null pointer exception on a XPS 13 (9343) which trigger a kernel panic when I suspend the laptop. I can reproduce the issue nearly all times (3 / 4 tries), for this I need to generate network traffic (looking a video on Internet seem to be enough).
After applying the patch mentioned above, I not longer have such kernel panic (done 6 tries without any kernel panic). So that patch seems to solve my kernel panic issue when suspending laptop. I will attach the debdiff I used to apply the patch. Without the patch (with bcmwl-kernel-source 6.30.223.248+bdcom- 0ubuntu2), I could product a kernel panic by doing: * Have network "load" (watching video on internet, downloading something, ...) * Suspend the laptop. On my test I did it with "systemctl suspend" from tty1 to capture the Call trace. System information: * Hardware : Dell XPS 13 (9343) * Ubuntu 15.04 amd64 * Bios A03 03/25/2015 * bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu2 (so wifi is using module wl) * lspci : 02:00.0 Network controller: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter (rev 03) I will also attach picture of the screen after a crash + partial transcript the of kernel panic (see picture for the full information). ** Patch added: "Patch to fix suspend kernel panic" https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1415880/+attachment/4401631/+files/lp1415880.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bcmwl in Ubuntu. https://bugs.launchpad.net/bugs/1415880 Title: 14e4:4365 bcmwl-kernel source: fix for null pointer crash Status in bcmwl package in Ubuntu: In Progress Bug description: The bcmwl package as of now misses one patch for a bug that occurs with BCM43142 and possibly other broadcom chipsets that will look like random disconnects, poor wifi signal and kernel warnings, See also #1379524. Adding the patch is a fairly simple process: * put the patch file in /usr/src/bcmwl-6.30.223.248+bdcom/patches * add the following line to /usr/src/bcmwl-6.30.223.248+bdcom/dkms.conf PATCH[7]="0014-null-pointer-crash.patch" * run: /usr/lib/dkms/common.postinst bcmwl 6.30.223.248+bdcom /usr/share/bcmwl x86_64 $(uname -r) This has fixed the issue for me. Edit: I just wanted to add that I did not write the patch; I merely downloaded it from a paste that was linked from the respective AUR package. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu1 [modified: usr/src/bcmwl-6.30.223.248+bdcom/dkms.conf] ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2 Uname: Linux 3.16.0-29-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.7-0ubuntu8.1 Architecture: amd64 CurrentDesktop: LXDE Date: Thu Jan 29 13:15:17 2015 InstallationDate: Installed on 2015-01-26 (3 days ago) InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) SourcePackage: bcmwl UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1415880/+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
