There isn't yet a new kernel in *bionic* -proposed to solve this issue, so I can't test it.
I have verified that building the 4.15.0-42.45 kernel with the patch (https://patchwork.kernel.org/patch/10382693/) applied fixes wifi for 16+ threaded systems on bionic. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1805088 Title: iwlwifi fails to work on 16 or more logical CPUs machines Status in HWE Next: New Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: In Progress Bug description: [Impact] Got dmesg kernel BUG while loading iwlwifi driver on machines which has 16 or more logical CPUs kernel: RIP: 0010:iwl_pcie_rxq_alloc_rbs+0x1d0/0x1f0 [iwlwifi] And it leads to wifi can't scan any APs, and leads to system hangs while suspending. [Fix] Below commit contained in v4.17 fix the issue. ab1068d6866e iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs [Regression Potential] Low. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1805088/+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