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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1274115 Title: snd_pcm_avail() returned a value that is exceptionally large To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1274115/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs