Comment 13 for bug 1274115

I can confirm that sound stuttering and "ath: phy0: Chip reset failed" are the same problem.
I turned off debugging (echo 0 > /proc/asound/card1/pcm0p/xrun_debug) at 12:41

Sound stuttered again at 12:50 and in syslog there are only strings about "ath: phy0: Chip reset failed".

There is part of syslog at this time:

Jan 30 12:41:01 bazilio-laptop kernel: [ 7703.204852] hwptr_update: pcmC1D0p:0: pos=4709/8192/16384, hwptr=0/61100645/61100645/61095936
Jan 30 12:42:13 bazilio-laptop dhclient: DHCPREQUEST of 192.168.0.28 on eth0 to 192.168.0.166 port 67 (xid=0x5d3ba2b9)
Jan 30 12:42:13 bazilio-laptop dhclient: DHCPACK of 192.168.0.28 from 192.168.0.166
Jan 30 12:42:13 bazilio-laptop dhclient: bound to 192.168.0.28 -- renewal in 268 seconds.
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> (eth0): DHCPv4 state changed renew -> renew
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> address 192.168.0.28
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> prefix 23 (255.255.254.0)
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> gateway 192.168.1.1
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> hostname 'bazilio-laptop'
Jan 30 12:42:13 bazilio-laptop NetworkManager[1247]: <info> nameserver '192.168.0.166'
Jan 30 12:42:13 bazilio-laptop dbus[912]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Jan 30 12:42:13 bazilio-laptop dbus[912]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Jan 30 12:46:41 bazilio-laptop dhclient: DHCPREQUEST of 192.168.0.28 on eth0 to 192.168.0.166 port 67 (xid=0x5d3ba2b9)
Jan 30 12:46:41 bazilio-laptop dhclient: DHCPACK of 192.168.0.28 from 192.168.0.166
Jan 30 12:46:41 bazilio-laptop dhclient: bound to 192.168.0.28 -- renewal in 295 seconds.
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> (eth0): DHCPv4 state changed renew -> renew
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> address 192.168.0.28
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> prefix 23 (255.255.254.0)
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> gateway 192.168.1.1
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> hostname 'bazilio-laptop'
Jan 30 12:46:41 bazilio-laptop NetworkManager[1247]: <info> nameserver '192.168.0.166'
Jan 30 12:46:41 bazilio-laptop dbus[912]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Jan 30 12:46:41 bazilio-laptop dbus[912]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Jan 30 12:50:05 bazilio-laptop kernel: [ 8247.400336] ath: phy0: Chip reset failed
Jan 30 12:50:05 bazilio-laptop kernel: [ 8247.400343] ath: phy0: Unable to reset channel, reset status -22
Jan 30 12:50:05 bazilio-laptop kernel: [ 8247.400820] ath: phy0: Unable to set channel