{"id":1689,"date":"2020-10-29T09:46:43","date_gmt":"2020-10-29T14:46:43","guid":{"rendered":"https:\/\/blog.iqonda.net\/?p=1689"},"modified":"2020-10-29T09:46:43","modified_gmt":"2020-10-29T14:46:43","slug":"linux-broadcom-wireless-issue-5-x-kernel","status":"publish","type":"post","link":"https:\/\/blog.ls-al.com\/linux-broadcom-wireless-issue-5-x-kernel\/","title":{"rendered":"Linux Broadcom Wireless Issue 5.x kernel"},"content":{"rendered":"<h1>Broadcom Wireless Issue<\/h1>\n<p>Recent update caused wireless to stop working.  Seems like PopOS (20.04 flavor and likely other distros) does not have a new enough bcmwl-kernel-source for 5.6 or 5.8 kernels.<\/p>\n<p>LINKS: <\/p>\n<ul>\n<li><a href=\"https:\/\/packages.ubuntu.com\/search?keywords=bcmwl-kernel-source\">https:\/\/packages.ubuntu.com\/search?keywords=bcmwl-kernel-source<\/a><\/li>\n<li><a href=\"https:\/\/bugs.launchpad.net\/ubuntu\/+source\/broadcom-sta\/+bug\/1866697\">https:\/\/bugs.launchpad.net\/ubuntu\/+source\/broadcom-sta\/+bug\/1866697<\/a><\/li>\n<\/ul>\n<p>NOTE: I tried to install a different kernel to see if that will work but that showed me the issue at least.<\/p>\n<h2>root cause<\/h2>\n<pre><code class=\"language-bash\"># apt install linux-image-5.8.0-23-generic\n...\nmake -j4 KERNELRELEASE=5.8.0-23-generic -C \/lib\/modules\/5.8.0-23-generic\/build M=\/var\/lib\/dkms\/bcmwl\/6.30.223.271+bdcom\/build....(bad exit status: 2)\nERROR (dkms apport): kernel package linux-headers-5.8.0-23-generic is not supported\nError! Bad return status for module build on kernel: 5.8.0-23-generic (x86_64)\nConsult \/var\/lib\/dkms\/bcmwl\/6.30.223.271+bdcom\/build\/make.log for more information.<\/code><\/pre>\n<h2>hold a kernel that works just for safety<\/h2>\n<pre><code class=\"language-bash\"># dpkg -l | grep linux-image-\nii  linux-image-5.4.0-7642-generic                   5.4.0-7642.46~1598628707~20.04~040157c               amd64        Linux kernel image for version 5.4.0 on 64 bit x86 SMP\nii  linux-image-5.8.0-23-generic                     5.8.0-23.24~20.04.1                                  amd64        Signed kernel image generic\nii  linux-image-5.8.0-7625-generic                   5.8.0-7625.26~1603389471~20.04~f6b125f               amd64        Linux kernel image for version 5.8.0 on 64 bit x86 SMP\nii  linux-image-generic                              5.8.0.7625.26~1603389471~20.04~f6b125f               amd64        Generic Linux kernel image\n\n# echo linux-image-5.4.0-7642-generic hold | dpkg --set-selections\n\n# dpkg -l | grep linux-image-\nhi  linux-image-5.4.0-7642-generic                   5.4.0-7642.46~1598628707~20.04~040157c               amd64        Linux kernel image for version 5.4.0 on 64 bit x86 SMP\nii  linux-image-5.8.0-23-generic                     5.8.0-23.24~20.04.1                                  amd64        Signed kernel image generic\nii  linux-image-5.8.0-7625-generic                   5.8.0-7625.26~1603389471~20.04~f6b125f               amd64        Linux kernel image for version 5.8.0 on 64 bit x86 SMP\nii  linux-image-generic                              5.8.0.7625.26~1603389471~20.04~f6b125f               amd64        Generic Linux kernel image<\/code><\/pre>\n<p>NOTE: set grub with longer timeout, show the boot menu and save last booted item<\/p>\n<h2>patches<\/h2>\n<p>Looking at the patches it appears we may need 0028? or something for newer than 5.1 kernels?<\/p>\n<pre><code class=\"language-bash\"># ls \/usr\/src\/bcmwl-6.30.223.271+bdcom\/patches\/\n0001-MODULE_LICENSE.patch                  0008-add-support-for-linux-3.9.0.patch                           0015-add-support-for-Linux-3.18.patch                       0022-add-support-for-Linux-4.8.patch\n0002-Makefile.patch                        0009-add-support-for-linux-3.10.0.patch                          0016-repair-make-warnings.patch                             0023-add-support-for-Linux-4.11.patch\n0003-Make-up-for-missing-init_MUTEX.patch  0010-change-the-network-interface-name-from-eth-to-wlan.patch    0017-add-support-for-Linux-4.0.patch                        0024-add-support-for-Linux-4.12.patch\n0004-Add-support-for-Linux-3.2.patch       0011-do-not-define-__devinit-as-__init-in-linux-3.8-as-__.patch  0018-cfg80211_disconnected.patch                            0025-add-support-for-Linux-4.14.patch\n0005-add-support-for-linux-3.4.0.patch     0012-add-support-for-Linux-3.15.patch                            0019-broadcom-sta-6.30.223.248-3.18-null-pointer-fix.patch  0026-add-support-for-Linux-4.15.patch\n0006-add-support-for-linux-3.8.0.patch     0013-gcc.patch                                                   0020-add-support-for-linux-4.3.patch                        0027-add-support-for-linux-5.1.patch\n0007-nl80211-move-scan-API-to-wdev.patch   0014-add-support-for-Linux-3.17.patch                            0021-add-support-for-Linux-4.7.patch<\/code><\/pre>\n<h2>Install Ubuntu 20.10 (groovy) package<\/h2>\n<p>Looking at the file list in the newer Ubuntu 20.10 source I see at least a 5.6 patch although I need 5.8.<\/p>\n<pre><code class=\"language-bash\"># wget http:\/\/mirrors.kernel.org\/ubuntu\/pool\/restricted\/b\/bcmwl\/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu7_amd64.deb\n...\n2020-10-29 08:14:10 (656 KB\/s) - \u2018bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu7_amd64.deb\u2019 saved [1545816\/1545816]\n\n# dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu7_amd64.deb \n(Reading database ... 283701 files and directories currently installed.)\nPreparing to unpack bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu7_amd64.deb ...\nRemoving all DKMS Modules\nDone.\nUnpacking bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu7) over (6.30.223.271+bdcom-0ubuntu5) ...\nSetting up bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu7) ...\nLoading new bcmwl-6.30.223.271+bdcom DKMS files...\nBuilding for 5.4.0-7642-generic 5.8.0-7625-generic\nBuilding for architecture x86_64\nBuilding initial module for 5.4.0-7642-generic\nDone.\n\nwl.ko:\nRunning module version sanity check.\n - Original module\n   - No original module exists within this kernel\n - Installation\n   - Installing to \/lib\/modules\/5.4.0-7642-generic\/updates\/\n\ndepmod...\n\nDKMS: install completed.\nBuilding initial module for 5.8.0-7625-generic\nDone.\n\nwl.ko:\nRunning module version sanity check.\n - Original module\n   - No original module exists within this kernel\n - Installation\n   - Installing to \/lib\/modules\/5.8.0-7625-generic\/updates\/\n\ndepmod........\n\nDKMS: install completed.\nupdate-initramfs: deferring update (trigger activated)\nProcessing triggers for initramfs-tools (0.136ubuntu6.3) ...\nupdate-initramfs: Generating \/boot\/initrd.img-5.8.0-7625-generic\ncryptsetup: WARNING: Resume target cryptswap uses a key file<\/code><\/pre>\n<h2>looks like rebuild wl.ko ok<\/h2>\n<pre><code class=\"language-bash\"># ls \/lib\/modules\/5.8.0-7625-generic\/updates\/\ndkms  wl.ko\n\n# find \/lib\/modules\/5.4.0-7642-generic\/ -name wl.ko\n\/lib\/modules\/5.4.0-7642-generic\/updates\/wl.ko\n\n# find \/lib\/modules\/5.8.0- -name wl.ko\n5.8.0-23-generic\/   5.8.0-7625-generic\/ \n\n# find \/lib\/modules\/5.8.0-23-generic\/ -name wl.ko\n\n# find \/lib\/modules\/5.8.0-7625-generic\/ -name wl.ko\n\/lib\/modules\/5.8.0-7625-generic\/updates\/wl.ko<\/code><\/pre>\n<h2>cleanup the 5.8.0-23 kernel I tried<\/h2>\n<pre><code class=\"language-bash\"># apt purge linux-image-5.8.0-23-generic\n...\nrmdir: failed to remove '\/lib\/modules\/5.8.0-23-generic': Directory not empty\n\nNOTE: PopOS may not be cleaning up \/lib\/modules because of the additional module. \n\n# rm -rf \/lib\/modules\/5.8.0-23-generic\n\n# apt purge linux-headers-5.8.0-23-generic\n# apt purge linux-modules-5.8.0-23-generic\n\n# ls \/boot\nconfig-5.4.0-7642-generic  grub        initrd.img-5.4.0-7642-generic  initrd.img.old                 System.map-5.8.0-7625-generic  vmlinuz-5.4.0-7642-generic  vmlinuz.old\nconfig-5.8.0-7625-generic  initrd.img  initrd.img-5.8.0-7625-generic  System.map-5.4.0-7642-generic  vmlinuz                        vmlinuz-5.8.0-7625-generic<\/code><\/pre>\n<h2>check<\/h2>\n<p>Rebooted with 5.8 kernel and it works<\/p>\n<pre><code class=\"language-bash\"># dkms status\nbcmwl, 6.30.223.271+bdcom, 5.4.0-7642-generic, x86_64: installed\nbcmwl, 6.30.223.271+bdcom, 5.8.0-7625-generic, x86_64: installed\nnvidia-340, 340.108, 5.4.0-7642-generic, x86_64: installed\nsystem76, 1.0.9~1597073326~20.04~5b01933, 5.4.0-7642-generic, x86_64: installed\nsystem76, 1.0.9~1597073326~20.04~5b01933, 5.8.0-7625-generic, x86_64: installed<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Broadcom Wireless Issue Recent update caused wireless to stop working. Seems like PopOS (20.04 flavor and likely other distros) does<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,123],"tags":[],"class_list":["post-1689","post","type-post","status-publish","format-standard","hentry","category-linux","category-wireless"],"_links":{"self":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/comments?post=1689"}],"version-history":[{"count":0,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/posts\/1689\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/media?parent=1689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/categories?post=1689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ls-al.com\/wp-json\/wp\/v2\/tags?post=1689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}