Bug#628444: iwlagn - "MAC is in deep sleep", cannot restore wifi operation
Another failure today, but this time the device failed to come out of
a sleep state after a resume cycle.
...
Mar 15 16:10:52 localhost kernel: [79800.936071] ehci_hcd 0000:00:1d.0: power state changed by ACPI to D0
Mar 15 16:10:52 localhost kernel: [79800.936173] ahci 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00007, writing 0x2b00407)
Mar 15 16:10:52 localhost kernel: [79800.936240] intel ips 0000:00:1f.6: restoring config space at offset 0xf (was 0x400, writing 0x40b)
Mar 15 16:10:52 localhost kernel: [79800.936261] intel ips 0000:00:1f.6: restoring config space at offset 0x1 (was 0x100000, writing 0x100002)
Mar 15 16:10:52 localhost kernel: [79800.951431] iwlwifi 0000:02:00.0: Refused to change power state, currently in D3
Mar 15 16:10:52 localhost kernel: [79800.951443] iwlwifi 0000:02:00.0: restoring config space at offset 0xf (was 0xffffffff, writing 0x10b)
Mar 15 16:10:52 localhost kernel: [79800.951451] iwlwifi 0000:02:00.0: restoring config space at offset 0xe (was 0xffffffff, writing 0x0)
Mar 15 16:10:52 localhost kernel: [79800.951458] iwlwifi 0000:02:00.0: restoring config space at offset 0xd (was 0xffffffff, writing 0xc8)
...
Mar 15 16:10:53 localhost kernel: [79803.655115] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
Mar 15 16:10:53 localhost kernel: [79803.672140] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF
Mar 15 16:10:53 localhost kernel: [79803.689187] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF
...
Mar 15 16:10:59 localhost kernel: [79809.254554] iwlwifi 0000:02:00.0: Could not load the INST uCode section
Mar 15 16:10:59 localhost kernel: [79809.254563] iwlwifi 0000:02:00.0: Failed to start RT ucode: -110
Mar 15 16:10:59 localhost kernel: [79809.271456] iwlwifi 0000:02:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF
Next iteration:
wd_disable=1 power_save=0 bt_coex_active=0
Note that power_save=0 seems to be the default anyway.
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