On Tue, 5 Oct 2021 at 01:40, Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> wrote: > With recent kernel 5.16.0-0.rc2 commit 5d9f4cf36721 the behavior has been changed for the better, but the WiFi adapter still works with bugs. Now spontaneous endless reboots do not occur. But if I restart the laptop instead of shutting down, then the next time I boot, the WiFi adapter disappears. In order for the WiFi adapter to appear again, it needs to turn off the laptop and then turn on. Can this be somehow fixed? lspci output after reboot and boot after shutdown is different: After reboot: Subsystem: AzureWave Device 4680 Flags: fast devsel, IRQ 84, IOMMU group 14 Memory at fc30300000 (64-bit, prefetchable) [size=1M] Memory at fc30400000 (64-bit, prefetchable) [size=16K] Memory at fc30404000 (64-bit, prefetchable) [size=4K] Capabilities: [80] Express Endpoint, MSI 00 Capabilities: [e0] MSI: Enable- Count=1/32 Maskable+ 64bit+ Capabilities: [f8] Power Management version 3 Capabilities: [100] Vendor Specific Information: ID=1556 Rev=1 Len=008 <?> Capabilities: [108] Latency Tolerance Reporting Capabilities: [110] L1 PM Substates Capabilities: [200] Advanced Error Reporting Kernel modules: mt7921e After shutdown: 05:00.0 Network controller: MEDIATEK Corp. Device 7961 Subsystem: AzureWave Device 4680 Flags: bus master, fast devsel, latency 0, IRQ 85, IOMMU group 14 Memory at fc30300000 (64-bit, prefetchable) [size=1M] Memory at fc30400000 (64-bit, prefetchable) [size=16K] Memory at fc30404000 (64-bit, prefetchable) [size=4K] Capabilities: [80] Express Endpoint, MSI 00 Capabilities: [e0] MSI: Enable+ Count=1/32 Maskable+ 64bit+ Capabilities: [f8] Power Management version 3 Capabilities: [100] Vendor Specific Information: ID=1556 Rev=1 Len=008 <?> Capabilities: [108] Latency Tolerance Reporting Capabilities: [110] L1 PM Substates Capabilities: [200] Advanced Error Reporting Kernel driver in use: mt7921e Kernel modules: mt7921e Screen of a visual comparison of lspci in meld: https://postimg.cc/642NKJ5Y -- Best Regards, Mike Gavrilov.
