Hiberate works reliably on the Dell XPS 13 9310 if ath11k is first removed before hibernate, and WIFI works if ath11k is enabled after hibernate: $ sudo systemctl stop NetworkManager.service $ sudo modprobe -r ath11k_pci ath11 <hibernate 100 times here using disk/platform (ACPI S4)> $ sudo modprobe ath11k_pci ath11 $ sudo systemctl start NetworkManager.service But if hibernate is attempted when ath11k is loaded, WIFI does not come up after resume from hibernate. Further, subsequent attempts to hibernate appear to stall forever.
Created attachment 307879 [details] dmesg dmesg afer a failed hibernate with ath11k loaded: [ 188.757072] ath11k_pci 0000:72:00.0: firmware crashed: MHI_CB_EE_RDDM [ 189.127099] ath11k_pci 0000:72:00.0: timed out while waiting for wow wakeup completion [ 189.127109] ath11k_pci 0000:72:00.0: failed to wakeup wow during resume: -110 [ 189.127114] ath11k_pci 0000:72:00.0: failed to resume core: -110 [ 189.127120] ath11k_pci 0000:72:00.0: PM: dpm_run_callback(): pci_pm_restore returns -110 [ 189.127131] ath11k_pci 0000:72:00.0: PM: pci_pm_restore returned -110 after 3175311 usecs [ 189.127144] ath11k_pci 0000:72:00.0: PM: failed to restore async: error -110 ... [ 192.199663] ath11k_pci 0000:72:00.0: wmi command 16387 timeout [ 192.199673] ath11k_pci 0000:72:00.0: failed to send WMI_PDEV_SET_PARAM cmd [ 192.199680] ath11k_pci 0000:72:00.0: failed to enable PMF QOS: (-11 [ 192.199684] ------------[ cut here ]------------ [ 192.199686] Hardware became unavailable upon resume. This could be a software issue prior to suspend or a hardware issue. [ 192.199741] WARNING: CPU: 5 PID: 4221 at net/mac80211/util.c:1829 ieee80211_reconfig+0xe3/0x1a50 [mac80211]