(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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881549 Title: BCM43602 [14e4:43ba] Subsystem [1028:0020]: Upgraded to 20.04 and wifi broke To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881549/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
