Public bug reported:
[Impact] Intel Wifi firmware may crash when it's connected to B/G wireless. [Fix] There's a new "feature" that when firmware thinks there are too much noise in the current frequency, it will automatically disconnect wifi and expect software/OS to change channel/frequency and reconnect. Otherwise, firmware crashes. [Test] [ 2651.943142] wlp0s20f3: associate with 00:24:a5:b5:f8:93 (try 1/3) [ 2651.951043] wlp0s20f3: RX AssocResp from 00:24:a5:b5:f8:93 (capab=0x421 status=0 aid=1) [ 2651.962960] wlp0s20f3: associated [ 2651.966183] IPv6: ADDRCONF(NETDEV_CHANGE): wlp0s20f3: link becomes ready [ 2651.972582] wlp0s20f3: Driver requested disconnection from AP 00:24:a5:b5:f8:93 [ 2654.641627] wlp0s20f3: authenticate with 00:24:a5:b5:f8:93 Now it's "Driver requested disconnection" instead of firmware crash. [Where problems could occur] The first two patches on 80211 only provide new hook and don't bring any functional change. The third patch achieves the "feature" by removing cap IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G. I am no expert on 80211, but if there's any AP that doesn't support 20MHZ for 2.4G, the reconnecting may fail. ** Affects: hwe-next Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Medium Status: Confirmed ** Affects: linux-oem-5.10 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Focal) Importance: Undecided Status: Won't Fix ** Affects: linux-oem-5.10 (Ubuntu Focal) Importance: Medium Status: Confirmed ** Affects: linux (Ubuntu Hirsute) Importance: Medium Status: Confirmed ** Affects: linux-oem-5.10 (Ubuntu Hirsute) Importance: Undecided Status: Won't Fix ** Tags: oem-priority originate-from-1921340 stella ** Also affects: linux (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: linux-oem-5.10 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Hirsute) Importance: Undecided Status: New ** Also affects: linux-oem-5.10 (Ubuntu Hirsute) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Hirsute) Status: New => Confirmed ** Changed in: linux (Ubuntu Hirsute) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Focal) Status: New => Won't Fix ** Changed in: linux-oem-5.10 (Ubuntu Hirsute) Status: New => Won't Fix ** Changed in: linux-oem-5.10 (Ubuntu Focal) Status: New => Confirmed ** Changed in: linux-oem-5.10 (Ubuntu Focal) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1922171 Title: Handle Intel Wifi firmware disconnection To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1922171/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs