EA6900 drops 2.4 GHz wifi every other day

Hey,
my EA6900 (firmware version 1.1.42.158863) drops the 2.4 GHz network every other day or so. At that point, all connected devices lose the network connection and cannot connect again until I manually reset the router. This is a big pain in the **bleep**.
Here is what this looks like on a Linux client:
May 4 07:50:06 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:50:35 dhclient: last message repeated 2 times
May 4 07:50:39 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:50:57 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:51:13 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:21e:68ff:fed6:7636 on eth0.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for 2605:6000:100e:c073:21e:68ff:fed6:7636 on eth0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for fe80::21e:68ff:fed6:7636 on eth0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for fe80::216:eaff:febc:cc0e on wlan0.*.
May 4 07:51:15 habanero kernel: [425404.872139] cfg80211: Calling CRDA to update world regulatory domain
May 4 07:51:15 habanero wpa_supplicant[1981]: wlan0: CTRL-EVENT-DISCONNECTED bssid=48:f8:b3:9d:ae:5b reason=4
May 4 07:51:15 habanero NetworkManager[1772]: <info> (wlan0): supplicant interface state: completed -> disconnected
May 4 07:51:15 habanero NetworkManager[1772]: <info> (wlan0): supplicant interface state: disconnected -> scanning
May 4 07:51:15 habanero kernel: [425405.033185] cfg80211: World regulatory domain updated:
May 4 07:51:15 habanero kernel: [425405.033189] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 4 07:51:15 habanero kernel: [425405.033192] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033194] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033196] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033198] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033200] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:17 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:3d66:cec1:f213:3d26 on eth0.
May 4 07:51:17 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface eth0.IPv6 with address 2605:6000:100e:c073:3d66:cec1:f213:3d26.
May 4 07:51:17 habanero avahi-daemon[1696]: Joining mDNS multicast group on interface eth0.IPv6 with address 2605:6000:100e:c073:21e:68ff:fed6:7636.
May 4 07:51:17 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:51:21 habanero NetworkManager[1772]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 4 07:51:21 habanero kernel: [425411.065496] r8169 0000:03:00.0 eth0: link down
May 4 07:51:23 habanero NetworkManager[1772]: <info> (eth0): carrier now ON (device state 100)
May 4 07:51:23 habanero kernel: [425412.693894] r8169 0000:03:00.0 eth0: link up
May 4 07:51:30 habanero NetworkManager[1772]: <warn> (wlan0): link timed out.
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): device state change: activated -> failed (reason 'SSID not found') [100 120 53]
May 4 07:51:30 habanero NetworkManager[1772]: <warn> Activation (wlan0) failed for connection 'olalmaro5'
May 4 07:51:30 habanero dbus[1572]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): deactivating device (reason 'none') [0]
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 19785
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:216:eaff:febc:cc0e on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface wlan0.IPv6 with address 2605:6000:100e:c073:216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for fe80::216:eaff:febc:cc0e on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Interface wlan0.IPv6 no longer relevant for mDNS.
How do I fix this?
I've enabled automatic router firmware updates, but this has not helped over the last weeks.
Thanks in advance,
Robert

There is a bunch of people with this router ( me included) that are having issues with the wireless dropping out. Some more than others as far as the frequency of it. I have a ticket open with them and have been talking to them every few days about it. One thing I discovered the other day that has stopped it from dropping connections on the 2.4 is to set the mode to G only. I have given this info to linksys and they are supposed to get back to me by tomorrow with some more info. I am assuming it is the same problem as yours: everything is working fine then all of a sudden devices start to disconnect randomly. An my laptops it shows as the SSID is available but it wont connect to it. Only way to get back on is to reboot the router. As suggested by linksys the security is set to WPA2 Personal and the bandwidth is set to 20 mHz instead of auto. There was a big thread about this starting to happen when the last update came out that went from 1.1.42.156465 to 1.1.42.158863. If the Auto update was checked it got the update and started to disconnect wireless stuff. Might want to see what hardware version your is, the 1.0 came with the 1.1.42.156465 so if yours has updated to the newer one you could roll back and see if it gets better. there is a go back to last version button on the UI. but if you have the hw ver 1.1 it came with the updated version and we have been told not to go back as it may brick the router. here is the thread: http://community.linksys.com/t5/Wireless-Routers/EA6900-New-Firmware-1-1-42-158863/td-p/770985

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