Version:
Google Chrome 50.0.2661.103 (Official Build) (64-bit)
Platform 7978.74.0 (Official Build) stable-channel falco

What steps will reproduce the problem?
(1) Wait for 5-10 minutes after booting

What is the expected output?
WiFi keeps working + keeps seeing all nearby WiFi networks

What do you see instead?
WiFi stops working + shows zero networks + dmesg says that it cannot wake the phy0 device.


In dmesg run from crosh I see lots of:
[  331.609937] ath: phy0: Failed to wakeup in 500us
[  331.629944] ath: phy0: Failed to wakeup in 500us
and:
[  336.178774] ath: phy0: timeout (100000 us) on reg 0x7000: 0xffffffff & 0x00000003 != 0x00000000
[  336.178778] ath: phy0: Chip reset failed
[  336.178787] ath: phy0: Unable to reset channel, reset status -22
[  336.178925] ath: phy0: Unable to set channel
[  336.190149] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
[  336.190180] ath: phy0: Could not stop RX, we could be confusing the DMA engine when we start RX up
[  336.251761] ath: phy0: Failed to stop TX DMA, queues=0x10f!