(sorry, previous comment is a misclick) @seb128, as I dealt with it first hand a few month ago with upstream packages (see https://bugs.archlinux.org/task/63397 ) maybe I can shed some light on it and help you write the SRU. This would be my suggestion:
[Impact] * A driver supports FT (IEEE 802.11r-2008 or fast BSS transition (FT), also called fast roaming) if it either supports SME or the NL80211_CMD_UPDATE_FT_IES command. When selecting AKM suites, wpa_supplicant currently doesn't take into account whether or not either of those conditions are met. This can cause association failures, e.g., when an AP supports both WPA-EAP and FT-EAP but the driver doesn't support FT (wpa_supplicant will decide to do FT-EAP since it is unaware the driver doesn't support it). * This is known to affect users at least users with popular chip-sets, such as BCM20703A1 or BCM4350 (notably present in the popular XPS 13/15 laptops). * The upload fixes the bug by allowing an FT suite to be selected only when the driver also supports FT. [Test Case] * requires affected hardware and wpa_supplicant built with CONFIG_IEEE80211R and connecting to an AP supporting WPA-EAP and FT-EAP [Regression Potential] * a driver not advertising correctly its support for SME or the NL80211_CMD_UPDATE_FT_IES command via the drv_flags would be prevented from using FT but would still be able to connect to APs [Other Info] * Upstream fix: https://w1.fi/cgit/hostap/commit/?id=23dc196fde951b3d508f367a603cddffbd053490 * Initial report: https://bugs.archlinux.org/task/63397 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to wpa in Ubuntu. https://bugs.launchpad.net/bugs/1881549 Title: BCM43602 [14e4:43ba] Subsystem [1028:0020]: Upgraded to 20.04 and wifi broke Status in linux package in Ubuntu: Invalid Status in wpa package in Ubuntu: Fix Committed Status in linux source package in Focal: Invalid Status in wpa source package in Focal: Confirmed Status in linux source package in Groovy: Invalid Status in wpa source package in Groovy: Fix Committed Bug description: * Impact connecting to wifi fails with some drivers * Test case try to connect to wifi, it should work * Regression potential ? ----------------------- Upgraded to 20.04 and the wifi broke. It was working fine on 18.04. Tried a variety of things with apw but nada. /var/log attached --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1438 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2019-07-09 (329 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) MachineType: Dell Inc. XPS 15 9550 Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-33-generic root=UUID=f73bcd37-31c3-4314-81cf-102bfd94a03e ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34 RelatedPackageVersions: linux-restricted-modules-5.4.0-33-generic N/A linux-backports-modules-5.4.0-33-generic N/A linux-firmware 1.187 Tags: focal Uname: Linux 5.4.0-33-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-05-21 (12 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 12/12/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.13.1 dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.13.1:bd12/12/2019:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9550 dmi.product.sku: 06E4 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881549/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
