Dear Stephen, > Contact Ubuntu. The rule for upstream is if you load out of tree drivers > than that kernel is unsupported. I compiled a stock 5.17.5 kernel from git.kernel.org, installed without kernel headers (forcing dkms to not build proprietary drivers) and get the following errors *at boot time* (not suspend/resume): +0,000386] wlx00c0cab022a0: associate with 8c:6a:8d:9e:2a:88 (try 1/3) [ +0,001118] ================================================================================ [ +0,000005] UBSAN: invalid-load in net/mac80211/status.c:1164:21 [ +0,000004] load of value 255 is not a valid value for type '_Bool' [ +0,000003] CPU: 10 PID: 380 Comm: kworker/u256:5 Not tainted 5.17.5 #3 [ +0,000004] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X399 Phantom Gaming 6, BIOS P1.31 01/14/2021 [ +0,000003] Workqueue: mt76 mt76u_tx_status_data [mt76_usb] [ +0,000009] Call Trace: [ +0,000002] <TASK> [ +0,000003] dump_stack_lvl+0x4c/0x63 [ +0,000009] dump_stack+0x10/0x12 [ +0,000004] ubsan_epilogue+0x9/0x45 [ +0,000003] __ubsan_handle_load_invalid_value.cold+0x44/0x49 [ +0,000004] ieee80211_tx_status_ext.cold+0x1e/0xb8 [mac80211] [ +0,000058] ? __radix_tree_delete+0x91/0x100 [ +0,000006] mt76_tx_status_unlock+0x119/0x170 [mt76] [ +0,000011] mt76x02_send_tx_status+0x1af/0x420 [mt76x02_lib] [ +0,000009] mt76x02_tx_status_data+0x47/0x70 [mt76x02_lib] [ +0,000007] mt76u_tx_status_data+0x67/0xc0 [mt76_usb] [ +0,000005] process_one_work+0x21f/0x3f0 [ +0,000005] worker_thread+0x50/0x3d0 [ +0,000004] ? rescuer_thread+0x390/0x390 [ +0,000003] kthread+0xee/0x120 [ +0,000003] ? kthread_complete_and_exit+0x20/0x20 [ +0,000004] ret_from_fork+0x22/0x30 [ +0,000005] </TASK> [ +0,000001] ================================================================================ [ +0,003098] wlx00c0cab022a0: RX AssocResp from 8c:6a:8d:9e:2a:88 (capab=0x1411 status=0 aid=16) I sent the first email because I suspected that the above (locking?) problem was totally unrelated to the GPU driver. I hope that this is more helpful. -- g
